./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/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_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/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_089e6f4e-97cb-4824-aa18-9476a1b52da0/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 1848e360a16ec6531e7d7aea690ab68ac7295c6b0bdec191a41fa9ee0518b66d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:42:29,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:42:29,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:42:29,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:42:29,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:42:29,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:42:29,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:42:29,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:42:29,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:42:29,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:42:29,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:42:29,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:42:29,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:42:29,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:42:29,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:42:29,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:42:29,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:42:29,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:42:29,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:42:29,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:42:29,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:42:29,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:42:29,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:42:29,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:42:29,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:42:29,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:42:29,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:42:29,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:42:29,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:42:29,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:42:29,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:42:29,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:42:29,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:42:29,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:42:29,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:42:29,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:42:29,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:42:29,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:42:29,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:42:29,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:42:29,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:42:29,519 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 17:42:29,542 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:42:29,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:42:29,543 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:42:29,543 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:42:29,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:42:29,544 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:42:29,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:42:29,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:42:29,545 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:42:29,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:42:29,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:42:29,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:42:29,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:42:29,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:42:29,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:42:29,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:42:29,547 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:42:29,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:42:29,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:42:29,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:42:29,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:42:29,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:42:29,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:42:29,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:42:29,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:42:29,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:42:29,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:42:29,549 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:42:29,549 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:42:29,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:42:29,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:42:29,549 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_089e6f4e-97cb-4824-aa18-9476a1b52da0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1848e360a16ec6531e7d7aea690ab68ac7295c6b0bdec191a41fa9ee0518b66d [2021-12-06 17:42:29,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:42:29,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:42:29,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:42:29,763 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:42:29,764 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:42:29,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i [2021-12-06 17:42:29,806 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/data/ea0469ed2/5c2f9ee6eb2b4fd4b1e85c4ee6470579/FLAG695325bbd [2021-12-06 17:42:30,430 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:42:30,430 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i [2021-12-06 17:42:30,468 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/data/ea0469ed2/5c2f9ee6eb2b4fd4b1e85c4ee6470579/FLAG695325bbd [2021-12-06 17:42:30,579 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/data/ea0469ed2/5c2f9ee6eb2b4fd4b1e85c4ee6470579 [2021-12-06 17:42:30,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:42:30,583 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:42:30,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:42:30,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:42:30,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:42:30,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:42:30" (1/1) ... [2021-12-06 17:42:30,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ea14dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:42:30, skipping insertion in model container [2021-12-06 17:42:30,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:42:30" (1/1) ... [2021-12-06 17:42:30,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:42:30,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:42:31,366 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_089e6f4e-97cb-4824-aa18-9476a1b52da0/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i[196736,196749] [2021-12-06 17:42:31,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:42:31,875 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:42:31,991 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_089e6f4e-97cb-4824-aa18-9476a1b52da0/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i[196736,196749] [2021-12-06 17:42:32,137 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:42:32,180 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:42:32,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:42:32 WrapperNode [2021-12-06 17:42:32,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:42:32,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:42:32,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:42:32,181 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:42:32,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:42:32" (1/1) ... [2021-12-06 17:42:32,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:42:32" (1/1) ... [2021-12-06 17:42:32,331 INFO L137 Inliner]: procedures = 201, calls = 1494, calls flagged for inlining = 91, calls inlined = 86, statements flattened = 2595 [2021-12-06 17:42:32,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:42:32,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:42:32,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:42:32,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:42:32,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:42:32" (1/1) ... [2021-12-06 17:42:32,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:42:32" (1/1) ... [2021-12-06 17:42:32,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:42:32" (1/1) ... [2021-12-06 17:42:32,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:42:32" (1/1) ... [2021-12-06 17:42:32,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:42:32" (1/1) ... [2021-12-06 17:42:32,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:42:32" (1/1) ... [2021-12-06 17:42:32,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:42:32" (1/1) ... [2021-12-06 17:42:32,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:42:32,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:42:32,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:42:32,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:42:32,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:42:32" (1/1) ... [2021-12-06 17:42:32,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:42:32,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:42:32,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:42:32,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:42:32,594 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-06 17:42:32,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-06 17:42:32,595 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_free_iso_urbs [2021-12-06 17:42:32,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_free_iso_urbs [2021-12-06 17:42:32,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_12 [2021-12-06 17:42:32,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_12 [2021-12-06 17:42:32,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 17:42:32,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 17:42:32,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 17:42:32,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 17:42:32,595 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_init_dvb [2021-12-06 17:42:32,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_init_dvb [2021-12-06 17:42:32,595 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-12-06 17:42:32,596 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-12-06 17:42:32,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-12-06 17:42:32,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-12-06 17:42:32,596 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2021-12-06 17:42:32,596 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2021-12-06 17:42:32,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 17:42:32,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 17:42:32,596 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_sec_feed [2021-12-06 17:42:32,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_sec_feed [2021-12-06 17:42:32,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-12-06 17:42:32,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-12-06 17:42:32,596 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-12-06 17:42:32,597 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-12-06 17:42:32,597 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_iso_xfer [2021-12-06 17:42:32,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_iso_xfer [2021-12-06 17:42:32,597 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-06 17:42:32,597 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-06 17:42:32,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 17:42:32,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 17:42:32,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-06 17:42:32,597 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-06 17:42:32,597 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 17:42:32,597 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 17:42:32,597 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2021-12-06 17:42:32,598 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2021-12-06 17:42:32,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2021-12-06 17:42:32,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2021-12-06 17:42:32,598 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-06 17:42:32,598 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-06 17:42:32,598 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_process_urb [2021-12-06 17:42:32,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_process_urb [2021-12-06 17:42:32,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 17:42:32,598 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-12-06 17:42:32,598 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-12-06 17:42:32,598 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-06 17:42:32,599 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-06 17:42:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 17:42:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-06 17:42:32,599 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-06 17:42:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_feed [2021-12-06 17:42:32,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_feed [2021-12-06 17:42:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 17:42:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 17:42:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_probe [2021-12-06 17:42:32,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_probe [2021-12-06 17:42:32,600 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-06 17:42:32,600 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-06 17:42:32,600 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-06 17:42:32,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-06 17:42:32,600 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_ts_feed [2021-12-06 17:42:32,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_ts_feed [2021-12-06 17:42:32,600 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-06 17:42:32,600 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-06 17:42:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-06 17:42:32,601 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-06 17:42:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-06 17:42:32,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-06 17:42:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_dvb [2021-12-06 17:42:32,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_dvb [2021-12-06 17:42:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-06 17:42:32,601 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-06 17:42:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_model [2021-12-06 17:42:32,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_model [2021-12-06 17:42:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-12-06 17:42:32,602 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-12-06 17:42:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-12-06 17:42:32,602 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-12-06 17:42:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_stop_iso_xfer [2021-12-06 17:42:32,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_stop_iso_xfer [2021-12-06 17:42:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_filter_pes2ts_init [2021-12-06 17:42:32,602 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_filter_pes2ts_init [2021-12-06 17:42:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-06 17:42:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-06 17:42:32,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-06 17:42:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-06 17:42:32,603 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-06 17:42:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-06 17:42:32,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-06 17:42:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 17:42:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2021-12-06 17:42:32,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2021-12-06 17:42:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_4 [2021-12-06 17:42:32,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_4 [2021-12-06 17:42:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2021-12-06 17:42:32,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2021-12-06 17:42:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2021-12-06 17:42:32,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2021-12-06 17:42:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2021-12-06 17:42:32,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2021-12-06 17:42:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-12-06 17:42:32,604 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-12-06 17:42:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 17:42:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-06 17:42:32,604 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-06 17:42:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-06 17:42:32,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-06 17:42:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-06 17:42:32,605 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-06 17:42:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-06 17:42:32,605 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-06 17:42:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-06 17:42:32,605 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-06 17:42:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_send_command [2021-12-06 17:42:32,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_send_command [2021-12-06 17:42:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 17:42:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_setup_urbs [2021-12-06 17:42:32,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_setup_urbs [2021-12-06 17:42:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-12-06 17:42:32,606 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-12-06 17:42:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 17:42:32,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 17:42:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_pids [2021-12-06 17:42:32,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_pids [2021-12-06 17:42:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_usb [2021-12-06 17:42:32,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_usb [2021-12-06 17:42:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 17:42:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:42:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-06 17:42:32,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-06 17:42:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 17:42:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 17:42:32,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 17:42:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-06 17:42:32,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-06 17:42:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_init_rc [2021-12-06 17:42:32,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_init_rc [2021-12-06 17:42:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2021-12-06 17:42:32,608 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2021-12-06 17:42:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-06 17:42:32,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-06 17:42:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_disconnect [2021-12-06 17:42:32,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_disconnect [2021-12-06 17:42:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_handle_irq [2021-12-06 17:42:32,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_handle_irq [2021-12-06 17:42:32,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-12-06 17:42:32,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-12-06 17:42:32,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:42:32,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:42:32,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:42:32,979 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:42:32,982 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:42:33,177 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 17:42:37,382 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2021-12-06 17:42:37,576 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:42:37,589 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:42:37,589 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 17:42:37,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:42:37 BoogieIcfgContainer [2021-12-06 17:42:37,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:42:37,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:42:37,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:42:37,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:42:37,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:42:30" (1/3) ... [2021-12-06 17:42:37,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef244ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:42:37, skipping insertion in model container [2021-12-06 17:42:37,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:42:32" (2/3) ... [2021-12-06 17:42:37,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef244ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:42:37, skipping insertion in model container [2021-12-06 17:42:37,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:42:37" (3/3) ... [2021-12-06 17:42:37,598 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i [2021-12-06 17:42:37,602 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:42:37,602 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:42:37,644 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:42:37,649 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 17:42:37,649 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:42:37,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 1061 states, 762 states have (on average 1.3267716535433072) internal successors, (1011), 789 states have internal predecessors, (1011), 231 states have call successors, (231), 68 states have call predecessors, (231), 66 states have return successors, (225), 217 states have call predecessors, (225), 225 states have call successors, (225) [2021-12-06 17:42:37,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 17:42:37,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:42:37,691 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:42:37,692 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:42:37,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:42:37,696 INFO L85 PathProgramCache]: Analyzing trace with hash 2031375709, now seen corresponding path program 1 times [2021-12-06 17:42:37,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:42:37,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356595379] [2021-12-06 17:42:37,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:42:37,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:42:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:38,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:42:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:38,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:42:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:38,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:42:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:38,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:42:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:38,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:42:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:38,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:42:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:38,169 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-06 17:42:38,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:42:38,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356595379] [2021-12-06 17:42:38,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356595379] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:42:38,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:42:38,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:42:38,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127707211] [2021-12-06 17:42:38,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:42:38,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:42:38,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:42:38,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:42:38,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:42:38,199 INFO L87 Difference]: Start difference. First operand has 1061 states, 762 states have (on average 1.3267716535433072) internal successors, (1011), 789 states have internal predecessors, (1011), 231 states have call successors, (231), 68 states have call predecessors, (231), 66 states have return successors, (225), 217 states have call predecessors, (225), 225 states have call successors, (225) Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 17:42:41,292 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 17:42:45,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:42:45,904 INFO L93 Difference]: Finished difference Result 3527 states and 5164 transitions. [2021-12-06 17:42:45,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:42:45,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2021-12-06 17:42:45,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:42:45,933 INFO L225 Difference]: With dead ends: 3527 [2021-12-06 17:42:45,933 INFO L226 Difference]: Without dead ends: 2445 [2021-12-06 17:42:45,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:42:45,947 INFO L933 BasicCegarLoop]: 1605 mSDtfsCounter, 2970 mSDsluCounter, 2445 mSDsCounter, 0 mSdLazyCounter, 1751 mSolverCounterSat, 1428 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3136 SdHoareTripleChecker+Valid, 4050 SdHoareTripleChecker+Invalid, 3180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1428 IncrementalHoareTripleChecker+Valid, 1751 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:42:45,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3136 Valid, 4050 Invalid, 3180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1428 Valid, 1751 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-12-06 17:42:45,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2445 states. [2021-12-06 17:42:46,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2445 to 2014. [2021-12-06 17:42:46,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2014 states, 1460 states have (on average 1.3171232876712329) internal successors, (1923), 1494 states have internal predecessors, (1923), 424 states have call successors, (424), 130 states have call predecessors, (424), 129 states have return successors, (419), 403 states have call predecessors, (419), 419 states have call successors, (419) [2021-12-06 17:42:46,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 2766 transitions. [2021-12-06 17:42:46,121 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 2766 transitions. Word has length 52 [2021-12-06 17:42:46,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:42:46,122 INFO L470 AbstractCegarLoop]: Abstraction has 2014 states and 2766 transitions. [2021-12-06 17:42:46,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 17:42:46,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 2766 transitions. [2021-12-06 17:42:46,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-06 17:42:46,125 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:42:46,125 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:42:46,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:42:46,126 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:42:46,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:42:46,126 INFO L85 PathProgramCache]: Analyzing trace with hash 2069612780, now seen corresponding path program 1 times [2021-12-06 17:42:46,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:42:46,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437777562] [2021-12-06 17:42:46,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:42:46,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:42:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:46,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:42:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:46,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:42:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:46,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:42:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:46,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:42:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:46,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:42:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:46,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:42:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:46,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:42:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:46,437 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 17:42:46,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:42:46,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437777562] [2021-12-06 17:42:46,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437777562] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:42:46,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:42:46,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:42:46,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074073015] [2021-12-06 17:42:46,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:42:46,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:42:46,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:42:46,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:42:46,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:42:46,441 INFO L87 Difference]: Start difference. First operand 2014 states and 2766 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 17:42:49,229 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 17:42:54,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:42:54,439 INFO L93 Difference]: Finished difference Result 6819 states and 9996 transitions. [2021-12-06 17:42:54,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:42:54,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2021-12-06 17:42:54,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:42:54,471 INFO L225 Difference]: With dead ends: 6819 [2021-12-06 17:42:54,471 INFO L226 Difference]: Without dead ends: 4827 [2021-12-06 17:42:54,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:42:54,482 INFO L933 BasicCegarLoop]: 1639 mSDtfsCounter, 3000 mSDsluCounter, 2555 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 1387 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3140 SdHoareTripleChecker+Valid, 4194 SdHoareTripleChecker+Invalid, 3169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1387 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:42:54,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3140 Valid, 4194 Invalid, 3169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1387 Valid, 1781 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2021-12-06 17:42:54,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4827 states. [2021-12-06 17:42:54,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4827 to 4244. [2021-12-06 17:42:54,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4244 states, 3066 states have (on average 1.3065883887801697) internal successors, (4006), 3148 states have internal predecessors, (4006), 856 states have call successors, (856), 257 states have call predecessors, (856), 321 states have return successors, (1129), 862 states have call predecessors, (1129), 851 states have call successors, (1129) [2021-12-06 17:42:54,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4244 states to 4244 states and 5991 transitions. [2021-12-06 17:42:54,676 INFO L78 Accepts]: Start accepts. Automaton has 4244 states and 5991 transitions. Word has length 62 [2021-12-06 17:42:54,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:42:54,677 INFO L470 AbstractCegarLoop]: Abstraction has 4244 states and 5991 transitions. [2021-12-06 17:42:54,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 17:42:54,677 INFO L276 IsEmpty]: Start isEmpty. Operand 4244 states and 5991 transitions. [2021-12-06 17:42:54,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 17:42:54,680 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:42:54,681 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:42:54,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 17:42:54,681 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:42:54,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:42:54,682 INFO L85 PathProgramCache]: Analyzing trace with hash -266995818, now seen corresponding path program 1 times [2021-12-06 17:42:54,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:42:54,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136444712] [2021-12-06 17:42:54,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:42:54,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:42:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:54,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:42:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:54,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:42:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:54,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:42:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:54,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:42:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:54,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:42:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:54,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:42:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:54,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:42:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:42:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 17:42:54,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:42:54,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136444712] [2021-12-06 17:42:54,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136444712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:42:54,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:42:54,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:42:54,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771377961] [2021-12-06 17:42:54,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:42:54,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:42:54,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:42:54,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:42:54,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:42:54,980 INFO L87 Difference]: Start difference. First operand 4244 states and 5991 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 17:42:57,765 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 17:43:02,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:43:02,426 INFO L93 Difference]: Finished difference Result 7096 states and 10382 transitions. [2021-12-06 17:43:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:43:02,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2021-12-06 17:43:02,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:43:02,462 INFO L225 Difference]: With dead ends: 7096 [2021-12-06 17:43:02,462 INFO L226 Difference]: Without dead ends: 7093 [2021-12-06 17:43:02,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:43:02,466 INFO L933 BasicCegarLoop]: 1506 mSDtfsCounter, 2954 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 1395 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3118 SdHoareTripleChecker+Valid, 3764 SdHoareTripleChecker+Invalid, 3092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1395 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:43:02,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3118 Valid, 3764 Invalid, 3092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1395 Valid, 1696 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-12-06 17:43:02,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7093 states. [2021-12-06 17:43:02,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7093 to 6240. [2021-12-06 17:43:02,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6240 states, 4498 states have (on average 1.3041351711871942) internal successors, (5866), 4618 states have internal predecessors, (5866), 1262 states have call successors, (1262), 383 states have call predecessors, (1262), 479 states have return successors, (1666), 1274 states have call predecessors, (1666), 1258 states have call successors, (1666) [2021-12-06 17:43:02,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 8794 transitions. [2021-12-06 17:43:02,730 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 8794 transitions. Word has length 63 [2021-12-06 17:43:02,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:43:02,731 INFO L470 AbstractCegarLoop]: Abstraction has 6240 states and 8794 transitions. [2021-12-06 17:43:02,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 17:43:02,731 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 8794 transitions. [2021-12-06 17:43:02,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-06 17:43:02,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:43:02,733 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:43:02,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 17:43:02,733 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:43:02,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:43:02,734 INFO L85 PathProgramCache]: Analyzing trace with hash 312586543, now seen corresponding path program 1 times [2021-12-06 17:43:02,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:43:02,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110011412] [2021-12-06 17:43:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:02,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:43:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:02,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:43:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:02,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:43:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:02,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:43:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:02,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:43:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:02,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:43:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:02,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:43:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:02,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:43:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:02,953 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 17:43:02,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:43:02,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110011412] [2021-12-06 17:43:02,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110011412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:43:02,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:43:02,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:43:02,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366511483] [2021-12-06 17:43:02,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:43:02,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:43:02,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:43:02,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:43:02,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:43:02,956 INFO L87 Difference]: Start difference. First operand 6240 states and 8794 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 17:43:05,533 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 17:43:09,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:43:09,916 INFO L93 Difference]: Finished difference Result 7095 states and 10380 transitions. [2021-12-06 17:43:09,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:43:09,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2021-12-06 17:43:09,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:43:09,950 INFO L225 Difference]: With dead ends: 7095 [2021-12-06 17:43:09,951 INFO L226 Difference]: Without dead ends: 7092 [2021-12-06 17:43:09,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:43:09,954 INFO L933 BasicCegarLoop]: 1510 mSDtfsCounter, 2948 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 1393 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3112 SdHoareTripleChecker+Valid, 3766 SdHoareTripleChecker+Invalid, 3082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1393 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:43:09,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3112 Valid, 3766 Invalid, 3082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1393 Valid, 1688 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2021-12-06 17:43:09,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7092 states. [2021-12-06 17:43:10,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7092 to 6239. [2021-12-06 17:43:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6239 states, 4498 states have (on average 1.3039128501556247) internal successors, (5865), 4617 states have internal predecessors, (5865), 1261 states have call successors, (1261), 383 states have call predecessors, (1261), 479 states have return successors, (1666), 1274 states have call predecessors, (1666), 1258 states have call successors, (1666) [2021-12-06 17:43:10,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6239 states to 6239 states and 8792 transitions. [2021-12-06 17:43:10,201 INFO L78 Accepts]: Start accepts. Automaton has 6239 states and 8792 transitions. Word has length 64 [2021-12-06 17:43:10,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:43:10,202 INFO L470 AbstractCegarLoop]: Abstraction has 6239 states and 8792 transitions. [2021-12-06 17:43:10,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 17:43:10,202 INFO L276 IsEmpty]: Start isEmpty. Operand 6239 states and 8792 transitions. [2021-12-06 17:43:10,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 17:43:10,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:43:10,203 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:43:10,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 17:43:10,204 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:43:10,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:43:10,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1099775417, now seen corresponding path program 1 times [2021-12-06 17:43:10,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:43:10,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072285673] [2021-12-06 17:43:10,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:10,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:43:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:10,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:43:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:10,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:43:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:10,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:43:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:10,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:43:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:10,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:43:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:10,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:43:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:10,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:43:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 17:43:10,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:43:10,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072285673] [2021-12-06 17:43:10,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072285673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:43:10,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:43:10,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:43:10,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979829109] [2021-12-06 17:43:10,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:43:10,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:43:10,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:43:10,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:43:10,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:43:10,421 INFO L87 Difference]: Start difference. First operand 6239 states and 8792 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 17:43:12,956 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 17:43:17,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:43:17,431 INFO L93 Difference]: Finished difference Result 7094 states and 10378 transitions. [2021-12-06 17:43:17,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:43:17,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 65 [2021-12-06 17:43:17,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:43:17,465 INFO L225 Difference]: With dead ends: 7094 [2021-12-06 17:43:17,465 INFO L226 Difference]: Without dead ends: 7091 [2021-12-06 17:43:17,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:43:17,468 INFO L933 BasicCegarLoop]: 1507 mSDtfsCounter, 2942 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 1388 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3104 SdHoareTripleChecker+Valid, 3758 SdHoareTripleChecker+Invalid, 3071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1388 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:43:17,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3104 Valid, 3758 Invalid, 3071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1388 Valid, 1682 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-12-06 17:43:17,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7091 states. [2021-12-06 17:43:17,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7091 to 6238. [2021-12-06 17:43:17,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6238 states, 4498 states have (on average 1.303690529124055) internal successors, (5864), 4616 states have internal predecessors, (5864), 1260 states have call successors, (1260), 383 states have call predecessors, (1260), 479 states have return successors, (1666), 1274 states have call predecessors, (1666), 1258 states have call successors, (1666) [2021-12-06 17:43:17,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 8790 transitions. [2021-12-06 17:43:17,723 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 8790 transitions. Word has length 65 [2021-12-06 17:43:17,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:43:17,724 INFO L470 AbstractCegarLoop]: Abstraction has 6238 states and 8790 transitions. [2021-12-06 17:43:17,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 17:43:17,724 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 8790 transitions. [2021-12-06 17:43:17,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 17:43:17,725 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:43:17,725 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:43:17,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 17:43:17,725 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:43:17,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:43:17,726 INFO L85 PathProgramCache]: Analyzing trace with hash -267168398, now seen corresponding path program 1 times [2021-12-06 17:43:17,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:43:17,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519564483] [2021-12-06 17:43:17,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:17,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:43:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:17,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:43:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:17,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:43:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:17,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:43:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:17,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:43:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:17,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:43:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:17,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:43:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:17,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:43:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:17,937 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 17:43:17,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:43:17,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519564483] [2021-12-06 17:43:17,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519564483] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:43:17,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:43:17,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:43:17,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325802706] [2021-12-06 17:43:17,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:43:17,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:43:17,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:43:17,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:43:17,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:43:17,939 INFO L87 Difference]: Start difference. First operand 6238 states and 8790 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 17:43:20,456 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 17:43:24,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:43:24,580 INFO L93 Difference]: Finished difference Result 7093 states and 10376 transitions. [2021-12-06 17:43:24,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:43:24,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 66 [2021-12-06 17:43:24,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:43:24,603 INFO L225 Difference]: With dead ends: 7093 [2021-12-06 17:43:24,603 INFO L226 Difference]: Without dead ends: 7081 [2021-12-06 17:43:24,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:43:24,606 INFO L933 BasicCegarLoop]: 1499 mSDtfsCounter, 2955 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 1671 mSolverCounterSat, 1396 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3118 SdHoareTripleChecker+Valid, 3740 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1396 IncrementalHoareTripleChecker+Valid, 1671 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:43:24,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3118 Valid, 3740 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1396 Valid, 1671 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-12-06 17:43:24,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7081 states. [2021-12-06 17:43:24,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7081 to 6228. [2021-12-06 17:43:24,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6228 states, 4489 states have (on average 1.3034083314769436) internal successors, (5851), 4606 states have internal predecessors, (5851), 1259 states have call successors, (1259), 383 states have call predecessors, (1259), 479 states have return successors, (1666), 1274 states have call predecessors, (1666), 1258 states have call successors, (1666) [2021-12-06 17:43:24,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 8776 transitions. [2021-12-06 17:43:24,825 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 8776 transitions. Word has length 66 [2021-12-06 17:43:24,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:43:24,825 INFO L470 AbstractCegarLoop]: Abstraction has 6228 states and 8776 transitions. [2021-12-06 17:43:24,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 17:43:24,826 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 8776 transitions. [2021-12-06 17:43:24,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-06 17:43:24,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:43:24,832 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:43:24,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 17:43:24,832 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:43:24,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:43:24,832 INFO L85 PathProgramCache]: Analyzing trace with hash -108410768, now seen corresponding path program 1 times [2021-12-06 17:43:24,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:43:24,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454397712] [2021-12-06 17:43:24,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:24,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:43:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:24,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:43:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:24,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:43:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:24,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:43:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:24,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:43:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:24,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:43:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:25,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:43:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:25,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 17:43:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:25,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:43:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:25,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:43:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:25,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:43:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:25,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:43:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:25,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:43:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:25,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:43:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:25,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:43:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:25,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:43:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:25,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:43:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:25,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:43:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:25,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:43:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:25,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:43:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:25,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:43:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:25,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:43:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:25,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:43:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:25,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 17:43:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:25,319 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-06 17:43:25,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:43:25,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454397712] [2021-12-06 17:43:25,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454397712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:43:25,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:43:25,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 17:43:25,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705200331] [2021-12-06 17:43:25,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:43:25,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:43:25,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:43:25,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:43:25,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:43:25,322 INFO L87 Difference]: Start difference. First operand 6228 states and 8776 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 17:43:28,584 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 17:43:34,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:43:34,166 INFO L93 Difference]: Finished difference Result 15392 states and 22625 transitions. [2021-12-06 17:43:34,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 17:43:34,167 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 173 [2021-12-06 17:43:34,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:43:34,199 INFO L225 Difference]: With dead ends: 15392 [2021-12-06 17:43:34,199 INFO L226 Difference]: Without dead ends: 9186 [2021-12-06 17:43:34,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2021-12-06 17:43:34,220 INFO L933 BasicCegarLoop]: 1331 mSDtfsCounter, 2167 mSDsluCounter, 3883 mSDsCounter, 0 mSdLazyCounter, 3177 mSolverCounterSat, 1419 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2283 SdHoareTripleChecker+Valid, 5214 SdHoareTripleChecker+Invalid, 4597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1419 IncrementalHoareTripleChecker+Valid, 3177 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:43:34,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2283 Valid, 5214 Invalid, 4597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1419 Valid, 3177 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-12-06 17:43:34,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9186 states. [2021-12-06 17:43:34,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9186 to 7382. [2021-12-06 17:43:34,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7382 states, 5287 states have (on average 1.2939285038774353) internal successors, (6841), 5407 states have internal predecessors, (6841), 1455 states have call successors, (1455), 420 states have call predecessors, (1455), 639 states have return successors, (2228), 1590 states have call predecessors, (2228), 1454 states have call successors, (2228) [2021-12-06 17:43:34,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7382 states to 7382 states and 10524 transitions. [2021-12-06 17:43:34,576 INFO L78 Accepts]: Start accepts. Automaton has 7382 states and 10524 transitions. Word has length 173 [2021-12-06 17:43:34,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:43:34,576 INFO L470 AbstractCegarLoop]: Abstraction has 7382 states and 10524 transitions. [2021-12-06 17:43:34,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 17:43:34,576 INFO L276 IsEmpty]: Start isEmpty. Operand 7382 states and 10524 transitions. [2021-12-06 17:43:34,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-06 17:43:34,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:43:34,583 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:43:34,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 17:43:34,583 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:43:34,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:43:34,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1517374134, now seen corresponding path program 1 times [2021-12-06 17:43:34,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:43:34,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178382166] [2021-12-06 17:43:34,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:34,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:43:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:34,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:43:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:34,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:43:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:34,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:43:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:34,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:43:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:34,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:43:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:34,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:43:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:34,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:43:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:34,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:43:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:34,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:43:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:34,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:43:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:34,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:43:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:34,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:43:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:34,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:43:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:34,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:43:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:34,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:43:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:34,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:43:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:34,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:43:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:34,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:43:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:34,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:43:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:34,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:43:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:35,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:43:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:35,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:43:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:35,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:43:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:35,026 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-12-06 17:43:35,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:43:35,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178382166] [2021-12-06 17:43:35,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178382166] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:43:35,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:43:35,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:43:35,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926225131] [2021-12-06 17:43:35,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:43:35,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:43:35,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:43:35,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:43:35,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:43:35,028 INFO L87 Difference]: Start difference. First operand 7382 states and 10524 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-06 17:43:38,293 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:43:47,382 WARN L534 Checker$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 17:43:53,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:43:53,178 INFO L93 Difference]: Finished difference Result 19352 states and 30533 transitions. [2021-12-06 17:43:53,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 17:43:53,179 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 182 [2021-12-06 17:43:53,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:43:53,219 INFO L225 Difference]: With dead ends: 19352 [2021-12-06 17:43:53,219 INFO L226 Difference]: Without dead ends: 9126 [2021-12-06 17:43:53,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=248, Invalid=874, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 17:43:53,262 INFO L933 BasicCegarLoop]: 2299 mSDtfsCounter, 6136 mSDsluCounter, 6090 mSDsCounter, 0 mSdLazyCounter, 7145 mSolverCounterSat, 3747 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6436 SdHoareTripleChecker+Valid, 8389 SdHoareTripleChecker+Invalid, 10894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3747 IncrementalHoareTripleChecker+Valid, 7145 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:43:53,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6436 Valid, 8389 Invalid, 10894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3747 Valid, 7145 Invalid, 2 Unknown, 0 Unchecked, 17.3s Time] [2021-12-06 17:43:53,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9126 states. [2021-12-06 17:43:53,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9126 to 7332. [2021-12-06 17:43:53,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7332 states, 5237 states have (on average 1.2434599961810198) internal successors, (6512), 5357 states have internal predecessors, (6512), 1455 states have call successors, (1455), 420 states have call predecessors, (1455), 639 states have return successors, (2228), 1590 states have call predecessors, (2228), 1454 states have call successors, (2228) [2021-12-06 17:43:53,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7332 states to 7332 states and 10195 transitions. [2021-12-06 17:43:53,668 INFO L78 Accepts]: Start accepts. Automaton has 7332 states and 10195 transitions. Word has length 182 [2021-12-06 17:43:53,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:43:53,668 INFO L470 AbstractCegarLoop]: Abstraction has 7332 states and 10195 transitions. [2021-12-06 17:43:53,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-06 17:43:53,669 INFO L276 IsEmpty]: Start isEmpty. Operand 7332 states and 10195 transitions. [2021-12-06 17:43:53,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-06 17:43:53,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:43:53,674 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:43:53,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 17:43:53,674 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:43:53,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:43:53,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1055590476, now seen corresponding path program 1 times [2021-12-06 17:43:53,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:43:53,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167761999] [2021-12-06 17:43:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:53,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:43:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:53,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:43:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:53,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:43:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:53,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:43:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:53,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:43:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:53,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:43:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:53,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:43:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:53,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:43:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:53,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:43:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:54,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:43:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:54,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:43:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:54,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:43:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:54,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:43:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:54,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:43:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:54,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:43:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:54,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:43:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:54,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:43:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:54,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:43:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:54,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:43:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:54,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:43:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:54,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:43:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:54,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:43:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:54,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:43:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:54,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:43:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-12-06 17:43:54,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:43:54,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167761999] [2021-12-06 17:43:54,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167761999] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:43:54,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:43:54,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:43:54,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951962014] [2021-12-06 17:43:54,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:43:54,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:43:54,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:43:54,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:43:54,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:43:54,162 INFO L87 Difference]: Start difference. First operand 7332 states and 10195 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-06 17:43:57,251 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:44:04,488 WARN L534 Checker$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 17:44:10,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:44:10,754 INFO L93 Difference]: Finished difference Result 19199 states and 28691 transitions. [2021-12-06 17:44:10,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-06 17:44:10,754 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 182 [2021-12-06 17:44:10,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:44:10,783 INFO L225 Difference]: With dead ends: 19199 [2021-12-06 17:44:10,783 INFO L226 Difference]: Without dead ends: 9068 [2021-12-06 17:44:10,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=289, Invalid=1043, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 17:44:10,804 INFO L933 BasicCegarLoop]: 2328 mSDtfsCounter, 6523 mSDsluCounter, 5430 mSDsCounter, 0 mSdLazyCounter, 6298 mSolverCounterSat, 4441 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6803 SdHoareTripleChecker+Valid, 7758 SdHoareTripleChecker+Invalid, 10741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4441 IncrementalHoareTripleChecker+Valid, 6298 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:44:10,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6803 Valid, 7758 Invalid, 10741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4441 Valid, 6298 Invalid, 2 Unknown, 0 Unchecked, 15.7s Time] [2021-12-06 17:44:10,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9068 states. [2021-12-06 17:44:11,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9068 to 7202. [2021-12-06 17:44:11,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7202 states, 5122 states have (on average 1.2407262787973448) internal successors, (6355), 5246 states have internal predecessors, (6355), 1439 states have call successors, (1439), 439 states have call predecessors, (1439), 640 states have return successors, (2165), 1554 states have call predecessors, (2165), 1438 states have call successors, (2165) [2021-12-06 17:44:11,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7202 states to 7202 states and 9959 transitions. [2021-12-06 17:44:11,162 INFO L78 Accepts]: Start accepts. Automaton has 7202 states and 9959 transitions. Word has length 182 [2021-12-06 17:44:11,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:44:11,163 INFO L470 AbstractCegarLoop]: Abstraction has 7202 states and 9959 transitions. [2021-12-06 17:44:11,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-06 17:44:11,163 INFO L276 IsEmpty]: Start isEmpty. Operand 7202 states and 9959 transitions. [2021-12-06 17:44:11,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-06 17:44:11,172 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:44:11,172 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:11,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 17:44:11,172 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:44:11,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:44:11,173 INFO L85 PathProgramCache]: Analyzing trace with hash 936427246, now seen corresponding path program 1 times [2021-12-06 17:44:11,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:44:11,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209982653] [2021-12-06 17:44:11,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:11,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:44:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:44:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:44:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:44:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:44:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:44:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:44:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:44:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:44:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:44:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:44:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:44:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:44:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:44:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:44:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:44:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:44:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:44:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:44:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:44:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 17:44:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 17:44:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:44:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 17:44:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-06 17:44:11,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:44:11,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209982653] [2021-12-06 17:44:11,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209982653] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:44:11,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971081931] [2021-12-06 17:44:11,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:11,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:44:11,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:44:11,650 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:44:11,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 17:44:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:12,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 17:44:12,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:44:12,292 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 17:44:12,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:44:12,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971081931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:44:12,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:44:12,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2021-12-06 17:44:12,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713804933] [2021-12-06 17:44:12,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:44:12,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:44:12,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:44:12,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:44:12,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:44:12,296 INFO L87 Difference]: Start difference. First operand 7202 states and 9959 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-06 17:44:12,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:44:12,978 INFO L93 Difference]: Finished difference Result 14406 states and 20437 transitions. [2021-12-06 17:44:12,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:44:12,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 226 [2021-12-06 17:44:12,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:44:13,008 INFO L225 Difference]: With dead ends: 14406 [2021-12-06 17:44:13,008 INFO L226 Difference]: Without dead ends: 7230 [2021-12-06 17:44:13,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:44:13,031 INFO L933 BasicCegarLoop]: 1300 mSDtfsCounter, 4 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2597 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:44:13,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2597 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 17:44:13,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7230 states. [2021-12-06 17:44:13,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7230 to 7209. [2021-12-06 17:44:13,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7209 states, 5129 states have (on average 1.2403977383505556) internal successors, (6362), 5253 states have internal predecessors, (6362), 1439 states have call successors, (1439), 439 states have call predecessors, (1439), 640 states have return successors, (2165), 1554 states have call predecessors, (2165), 1438 states have call successors, (2165) [2021-12-06 17:44:13,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7209 states to 7209 states and 9966 transitions. [2021-12-06 17:44:13,360 INFO L78 Accepts]: Start accepts. Automaton has 7209 states and 9966 transitions. Word has length 226 [2021-12-06 17:44:13,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:44:13,361 INFO L470 AbstractCegarLoop]: Abstraction has 7209 states and 9966 transitions. [2021-12-06 17:44:13,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-06 17:44:13,361 INFO L276 IsEmpty]: Start isEmpty. Operand 7209 states and 9966 transitions. [2021-12-06 17:44:13,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-12-06 17:44:13,371 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:44:13,371 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:13,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:44:13,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 17:44:13,574 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:44:13,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:44:13,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1832020420, now seen corresponding path program 1 times [2021-12-06 17:44:13,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:44:13,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147430191] [2021-12-06 17:44:13,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:13,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:44:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:13,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:44:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:13,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:44:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:13,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:44:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:13,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:44:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:13,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:44:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:13,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:44:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:13,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:44:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:13,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:44:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:13,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:44:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:13,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:44:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:13,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:13,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:13,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:44:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:13,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:44:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:13,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:44:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:13,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:44:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:14,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:44:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:14,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:44:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:14,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:44:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:14,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:44:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:14,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:44:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:14,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:14,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 17:44:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:14,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 17:44:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:14,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:14,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:44:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:14,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 17:44:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:14,095 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 17:44:14,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:44:14,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147430191] [2021-12-06 17:44:14,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147430191] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:44:14,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129534596] [2021-12-06 17:44:14,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:14,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:44:14,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:44:14,096 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:44:14,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 17:44:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:14,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 2637 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 17:44:14,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:44:14,647 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 17:44:14,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:44:14,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129534596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:44:14,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:44:14,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2021-12-06 17:44:14,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833423397] [2021-12-06 17:44:14,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:44:14,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:44:14,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:44:14,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:44:14,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:44:14,649 INFO L87 Difference]: Start difference. First operand 7209 states and 9966 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-06 17:44:14,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:44:14,904 INFO L93 Difference]: Finished difference Result 14406 states and 20430 transitions. [2021-12-06 17:44:14,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:44:14,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 229 [2021-12-06 17:44:14,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:44:14,944 INFO L225 Difference]: With dead ends: 14406 [2021-12-06 17:44:14,944 INFO L226 Difference]: Without dead ends: 7223 [2021-12-06 17:44:14,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:44:14,961 INFO L933 BasicCegarLoop]: 1301 mSDtfsCounter, 1 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2599 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:44:14,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2599 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:44:14,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7223 states. [2021-12-06 17:44:15,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7223 to 7216. [2021-12-06 17:44:15,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7216 states, 5136 states have (on average 1.2400700934579438) internal successors, (6369), 5260 states have internal predecessors, (6369), 1439 states have call successors, (1439), 439 states have call predecessors, (1439), 640 states have return successors, (2165), 1554 states have call predecessors, (2165), 1438 states have call successors, (2165) [2021-12-06 17:44:15,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7216 states to 7216 states and 9973 transitions. [2021-12-06 17:44:15,313 INFO L78 Accepts]: Start accepts. Automaton has 7216 states and 9973 transitions. Word has length 229 [2021-12-06 17:44:15,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:44:15,314 INFO L470 AbstractCegarLoop]: Abstraction has 7216 states and 9973 transitions. [2021-12-06 17:44:15,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-06 17:44:15,314 INFO L276 IsEmpty]: Start isEmpty. Operand 7216 states and 9973 transitions. [2021-12-06 17:44:15,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-12-06 17:44:15,322 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:44:15,322 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:15,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 17:44:15,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 17:44:15,524 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:44:15,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:44:15,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1909090624, now seen corresponding path program 1 times [2021-12-06 17:44:15,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:44:15,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340284451] [2021-12-06 17:44:15,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:15,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:44:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:44:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:44:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:44:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:44:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:44:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:44:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:44:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:44:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:44:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:44:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:44:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:44:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:44:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:44:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:44:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:44:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:44:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:44:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:44:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 17:44:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 17:44:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:44:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 17:44:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:15,911 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-12-06 17:44:15,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:44:15,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340284451] [2021-12-06 17:44:15,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340284451] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:44:15,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916393338] [2021-12-06 17:44:15,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:15,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:44:15,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:44:15,912 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:44:15,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 17:44:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:16,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 2664 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:44:16,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:44:16,518 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-12-06 17:44:16,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:44:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-12-06 17:44:16,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916393338] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:44:16,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:44:16,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4, 4] total 13 [2021-12-06 17:44:16,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440897750] [2021-12-06 17:44:16,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:44:16,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 17:44:16,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:44:16,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 17:44:16,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:44:16,740 INFO L87 Difference]: Start difference. First operand 7216 states and 9973 transitions. Second operand has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 7 states have internal predecessors, (173), 5 states have call successors, (47), 8 states have call predecessors, (47), 2 states have return successors, (30), 5 states have call predecessors, (30), 5 states have call successors, (30) [2021-12-06 17:44:19,798 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 17:44:26,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:44:26,745 INFO L93 Difference]: Finished difference Result 21139 states and 32320 transitions. [2021-12-06 17:44:26,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 17:44:26,746 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 7 states have internal predecessors, (173), 5 states have call successors, (47), 8 states have call predecessors, (47), 2 states have return successors, (30), 5 states have call predecessors, (30), 5 states have call successors, (30) Word has length 231 [2021-12-06 17:44:26,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:44:26,800 INFO L225 Difference]: With dead ends: 21139 [2021-12-06 17:44:26,800 INFO L226 Difference]: Without dead ends: 13949 [2021-12-06 17:44:26,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-12-06 17:44:26,825 INFO L933 BasicCegarLoop]: 1656 mSDtfsCounter, 3069 mSDsluCounter, 5726 mSDsCounter, 0 mSdLazyCounter, 3907 mSolverCounterSat, 1493 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3479 SdHoareTripleChecker+Valid, 7382 SdHoareTripleChecker+Invalid, 5401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1493 IncrementalHoareTripleChecker+Valid, 3907 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:44:26,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3479 Valid, 7382 Invalid, 5401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1493 Valid, 3907 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2021-12-06 17:44:26,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13949 states. [2021-12-06 17:44:27,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13949 to 7330. [2021-12-06 17:44:27,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7330 states, 5232 states have (on average 1.239105504587156) internal successors, (6483), 5356 states have internal predecessors, (6483), 1457 states have call successors, (1457), 439 states have call predecessors, (1457), 640 states have return successors, (2201), 1572 states have call predecessors, (2201), 1456 states have call successors, (2201) [2021-12-06 17:44:27,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7330 states to 7330 states and 10141 transitions. [2021-12-06 17:44:27,262 INFO L78 Accepts]: Start accepts. Automaton has 7330 states and 10141 transitions. Word has length 231 [2021-12-06 17:44:27,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:44:27,263 INFO L470 AbstractCegarLoop]: Abstraction has 7330 states and 10141 transitions. [2021-12-06 17:44:27,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 7 states have internal predecessors, (173), 5 states have call successors, (47), 8 states have call predecessors, (47), 2 states have return successors, (30), 5 states have call predecessors, (30), 5 states have call successors, (30) [2021-12-06 17:44:27,263 INFO L276 IsEmpty]: Start isEmpty. Operand 7330 states and 10141 transitions. [2021-12-06 17:44:27,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-12-06 17:44:27,272 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:44:27,273 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:27,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 17:44:27,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:44:27,474 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:44:27,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:44:27,475 INFO L85 PathProgramCache]: Analyzing trace with hash 371998943, now seen corresponding path program 1 times [2021-12-06 17:44:27,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:44:27,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766028794] [2021-12-06 17:44:27,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:27,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:44:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:44:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:44:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:44:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:44:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:44:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:44:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:44:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:44:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:44:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:44:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:44:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:44:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:44:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:44:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:44:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:44:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:44:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:44:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:44:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 17:44:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 17:44:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:44:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 17:44:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:44:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:44:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:44:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:44:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-06 17:44:27,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:44:27,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766028794] [2021-12-06 17:44:27,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766028794] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:44:27,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:44:27,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:44:27,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171497543] [2021-12-06 17:44:27,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:44:27,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:44:27,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:44:27,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:44:27,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:44:27,919 INFO L87 Difference]: Start difference. First operand 7330 states and 10141 transitions. Second operand has 10 states, 10 states have (on average 14.9) internal successors, (149), 3 states have internal predecessors, (149), 2 states have call successors, (32), 9 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-06 17:44:30,900 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 17:44:36,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:44:36,524 INFO L93 Difference]: Finished difference Result 18319 states and 27822 transitions. [2021-12-06 17:44:36,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 17:44:36,525 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.9) internal successors, (149), 3 states have internal predecessors, (149), 2 states have call successors, (32), 9 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 262 [2021-12-06 17:44:36,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:44:36,561 INFO L225 Difference]: With dead ends: 18319 [2021-12-06 17:44:36,561 INFO L226 Difference]: Without dead ends: 11015 [2021-12-06 17:44:36,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2021-12-06 17:44:36,582 INFO L933 BasicCegarLoop]: 1163 mSDtfsCounter, 2398 mSDsluCounter, 3248 mSDsCounter, 0 mSdLazyCounter, 3189 mSolverCounterSat, 1817 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2512 SdHoareTripleChecker+Valid, 4411 SdHoareTripleChecker+Invalid, 5007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1817 IncrementalHoareTripleChecker+Valid, 3189 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:44:36,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2512 Valid, 4411 Invalid, 5007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1817 Valid, 3189 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2021-12-06 17:44:36,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11015 states. [2021-12-06 17:44:37,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11015 to 8237. [2021-12-06 17:44:37,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8237 states, 5927 states have (on average 1.254091445925426) internal successors, (7433), 6053 states have internal predecessors, (7433), 1740 states have call successors, (1740), 439 states have call predecessors, (1740), 569 states have return successors, (2310), 1793 states have call predecessors, (2310), 1739 states have call successors, (2310) [2021-12-06 17:44:37,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8237 states to 8237 states and 11483 transitions. [2021-12-06 17:44:37,038 INFO L78 Accepts]: Start accepts. Automaton has 8237 states and 11483 transitions. Word has length 262 [2021-12-06 17:44:37,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:44:37,039 INFO L470 AbstractCegarLoop]: Abstraction has 8237 states and 11483 transitions. [2021-12-06 17:44:37,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.9) internal successors, (149), 3 states have internal predecessors, (149), 2 states have call successors, (32), 9 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-06 17:44:37,039 INFO L276 IsEmpty]: Start isEmpty. Operand 8237 states and 11483 transitions. [2021-12-06 17:44:37,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-12-06 17:44:37,048 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:44:37,049 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:37,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 17:44:37,049 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:44:37,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:44:37,049 INFO L85 PathProgramCache]: Analyzing trace with hash -502691888, now seen corresponding path program 1 times [2021-12-06 17:44:37,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:44:37,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070526495] [2021-12-06 17:44:37,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:37,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:44:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:44:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:44:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:44:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:44:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:44:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:44:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:44:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:44:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:44:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:44:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:44:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:44:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:44:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:44:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:44:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:44:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:44:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:44:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:44:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 17:44:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 17:44:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:44:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 17:44:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:44:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:44:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:44:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:44:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:44:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,469 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-06 17:44:37,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:44:37,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070526495] [2021-12-06 17:44:37,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070526495] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:44:37,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280450361] [2021-12-06 17:44:37,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:37,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:44:37,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:44:37,471 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:44:37,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 17:44:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:37,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 2786 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:44:37,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:44:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-12-06 17:44:38,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:44:38,329 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-06 17:44:38,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280450361] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:44:38,329 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:44:38,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 13 [2021-12-06 17:44:38,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909479702] [2021-12-06 17:44:38,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:44:38,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 17:44:38,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:44:38,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 17:44:38,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:44:38,331 INFO L87 Difference]: Start difference. First operand 8237 states and 11483 transitions. Second operand has 13 states, 13 states have (on average 13.615384615384615) internal successors, (177), 6 states have internal predecessors, (177), 4 states have call successors, (57), 9 states have call predecessors, (57), 2 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2021-12-06 17:44:41,620 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 17:44:48,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:44:48,024 INFO L93 Difference]: Finished difference Result 19307 states and 29666 transitions. [2021-12-06 17:44:48,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 17:44:48,025 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.615384615384615) internal successors, (177), 6 states have internal predecessors, (177), 4 states have call successors, (57), 9 states have call predecessors, (57), 2 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) Word has length 270 [2021-12-06 17:44:48,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:44:48,063 INFO L225 Difference]: With dead ends: 19307 [2021-12-06 17:44:48,064 INFO L226 Difference]: Without dead ends: 11096 [2021-12-06 17:44:48,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=261, Invalid=609, Unknown=0, NotChecked=0, Total=870 [2021-12-06 17:44:48,088 INFO L933 BasicCegarLoop]: 1170 mSDtfsCounter, 2347 mSDsluCounter, 4343 mSDsCounter, 0 mSdLazyCounter, 3835 mSolverCounterSat, 1817 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2460 SdHoareTripleChecker+Valid, 5513 SdHoareTripleChecker+Invalid, 5653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1817 IncrementalHoareTripleChecker+Valid, 3835 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:44:48,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2460 Valid, 5513 Invalid, 5653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1817 Valid, 3835 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2021-12-06 17:44:48,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11096 states. [2021-12-06 17:44:48,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11096 to 8339. [2021-12-06 17:44:48,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8339 states, 6005 states have (on average 1.2507910074937552) internal successors, (7511), 6128 states have internal predecessors, (7511), 1764 states have call successors, (1764), 439 states have call predecessors, (1764), 569 states have return successors, (2343), 1820 states have call predecessors, (2343), 1763 states have call successors, (2343) [2021-12-06 17:44:48,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8339 states to 8339 states and 11618 transitions. [2021-12-06 17:44:48,537 INFO L78 Accepts]: Start accepts. Automaton has 8339 states and 11618 transitions. Word has length 270 [2021-12-06 17:44:48,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:44:48,537 INFO L470 AbstractCegarLoop]: Abstraction has 8339 states and 11618 transitions. [2021-12-06 17:44:48,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.615384615384615) internal successors, (177), 6 states have internal predecessors, (177), 4 states have call successors, (57), 9 states have call predecessors, (57), 2 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2021-12-06 17:44:48,538 INFO L276 IsEmpty]: Start isEmpty. Operand 8339 states and 11618 transitions. [2021-12-06 17:44:48,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-12-06 17:44:48,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:44:48,546 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:48,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 17:44:48,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 17:44:48,748 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:44:48,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:44:48,749 INFO L85 PathProgramCache]: Analyzing trace with hash 696760013, now seen corresponding path program 1 times [2021-12-06 17:44:48,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:44:48,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354573817] [2021-12-06 17:44:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:48,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:44:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:48,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:44:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:48,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:44:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:48,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:44:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:48,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:44:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:48,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:44:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:48,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:44:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:48,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:44:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:48,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:44:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:44:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:44:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:44:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:44:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:44:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:44:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:44:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:44:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:44:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:44:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:44:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 17:44:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 17:44:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:44:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 17:44:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:44:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 17:44:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:44:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-06 17:44:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:44:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-06 17:44:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,201 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2021-12-06 17:44:49,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:44:49,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354573817] [2021-12-06 17:44:49,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354573817] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:44:49,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475281648] [2021-12-06 17:44:49,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:49,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:44:49,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:44:49,202 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:44:49,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 17:44:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:49,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 2985 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:44:49,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:44:49,804 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2021-12-06 17:44:49,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:44:50,059 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2021-12-06 17:44:50,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475281648] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:44:50,059 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:44:50,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4, 4] total 12 [2021-12-06 17:44:50,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306262217] [2021-12-06 17:44:50,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:44:50,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 17:44:50,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:44:50,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 17:44:50,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:44:50,061 INFO L87 Difference]: Start difference. First operand 8339 states and 11618 transitions. Second operand has 12 states, 12 states have (on average 12.916666666666666) internal successors, (155), 6 states have internal predecessors, (155), 2 states have call successors, (45), 8 states have call predecessors, (45), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-06 17:44:53,186 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 17:44:59,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:44:59,532 INFO L93 Difference]: Finished difference Result 19451 states and 29795 transitions. [2021-12-06 17:44:59,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 17:44:59,533 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.916666666666666) internal successors, (155), 6 states have internal predecessors, (155), 2 states have call successors, (45), 8 states have call predecessors, (45), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 297 [2021-12-06 17:44:59,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:44:59,572 INFO L225 Difference]: With dead ends: 19451 [2021-12-06 17:44:59,572 INFO L226 Difference]: Without dead ends: 11138 [2021-12-06 17:44:59,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 664 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2021-12-06 17:44:59,598 INFO L933 BasicCegarLoop]: 1175 mSDtfsCounter, 2287 mSDsluCounter, 4333 mSDsCounter, 0 mSdLazyCounter, 3297 mSolverCounterSat, 1839 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2382 SdHoareTripleChecker+Valid, 5508 SdHoareTripleChecker+Invalid, 5137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1839 IncrementalHoareTripleChecker+Valid, 3297 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:44:59,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2382 Valid, 5508 Invalid, 5137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1839 Valid, 3297 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2021-12-06 17:44:59,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11138 states. [2021-12-06 17:45:00,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11138 to 8381. [2021-12-06 17:45:00,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8381 states, 6047 states have (on average 1.249049115263767) internal successors, (7553), 6170 states have internal predecessors, (7553), 1764 states have call successors, (1764), 439 states have call predecessors, (1764), 569 states have return successors, (2343), 1820 states have call predecessors, (2343), 1763 states have call successors, (2343) [2021-12-06 17:45:00,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8381 states to 8381 states and 11660 transitions. [2021-12-06 17:45:00,086 INFO L78 Accepts]: Start accepts. Automaton has 8381 states and 11660 transitions. Word has length 297 [2021-12-06 17:45:00,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:45:00,086 INFO L470 AbstractCegarLoop]: Abstraction has 8381 states and 11660 transitions. [2021-12-06 17:45:00,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.916666666666666) internal successors, (155), 6 states have internal predecessors, (155), 2 states have call successors, (45), 8 states have call predecessors, (45), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-06 17:45:00,086 INFO L276 IsEmpty]: Start isEmpty. Operand 8381 states and 11660 transitions. [2021-12-06 17:45:00,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-12-06 17:45:00,095 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:45:00,095 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:00,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-06 17:45:00,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 17:45:00,297 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:45:00,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:45:00,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1062556825, now seen corresponding path program 2 times [2021-12-06 17:45:00,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:45:00,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044543312] [2021-12-06 17:45:00,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:45:00,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:45:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:45:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:45:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:45:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:45:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:45:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:45:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:45:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:45:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:45:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:45:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:45:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:45:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:45:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:45:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:45:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:45:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:45:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:45:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:45:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 17:45:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 17:45:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:45:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 17:45:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:45:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 17:45:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:45:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-06 17:45:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:45:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-06 17:45:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,748 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2021-12-06 17:45:00,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:45:00,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044543312] [2021-12-06 17:45:00,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044543312] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:45:00,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971560532] [2021-12-06 17:45:00,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:45:00,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:45:00,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:45:00,749 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:45:00,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 17:45:01,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:45:01,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:45:01,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:45:01,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:45:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2021-12-06 17:45:01,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:45:01,752 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2021-12-06 17:45:01,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971560532] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:45:01,752 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:45:01,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4, 4] total 12 [2021-12-06 17:45:01,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766302136] [2021-12-06 17:45:01,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:45:01,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 17:45:01,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:45:01,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 17:45:01,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:45:01,754 INFO L87 Difference]: Start difference. First operand 8381 states and 11660 transitions. Second operand has 12 states, 12 states have (on average 13.166666666666666) internal successors, (158), 6 states have internal predecessors, (158), 2 states have call successors, (45), 8 states have call predecessors, (45), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-06 17:45:04,880 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 17:45:11,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:45:11,959 INFO L93 Difference]: Finished difference Result 19717 states and 30082 transitions. [2021-12-06 17:45:11,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 17:45:11,960 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.166666666666666) internal successors, (158), 6 states have internal predecessors, (158), 2 states have call successors, (45), 8 states have call predecessors, (45), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 303 [2021-12-06 17:45:11,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:45:11,995 INFO L225 Difference]: With dead ends: 19717 [2021-12-06 17:45:11,995 INFO L226 Difference]: Without dead ends: 11362 [2021-12-06 17:45:12,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 676 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2021-12-06 17:45:12,017 INFO L933 BasicCegarLoop]: 1192 mSDtfsCounter, 2299 mSDsluCounter, 4396 mSDsCounter, 0 mSdLazyCounter, 3282 mSolverCounterSat, 1839 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2393 SdHoareTripleChecker+Valid, 5588 SdHoareTripleChecker+Invalid, 5122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1839 IncrementalHoareTripleChecker+Valid, 3282 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:45:12,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2393 Valid, 5588 Invalid, 5122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1839 Valid, 3282 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2021-12-06 17:45:12,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11362 states. [2021-12-06 17:45:12,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11362 to 8612. [2021-12-06 17:45:12,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8612 states, 6278 states have (on average 1.2432303281299777) internal successors, (7805), 6401 states have internal predecessors, (7805), 1764 states have call successors, (1764), 439 states have call predecessors, (1764), 569 states have return successors, (2343), 1820 states have call predecessors, (2343), 1763 states have call successors, (2343) [2021-12-06 17:45:12,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8612 states to 8612 states and 11912 transitions. [2021-12-06 17:45:12,503 INFO L78 Accepts]: Start accepts. Automaton has 8612 states and 11912 transitions. Word has length 303 [2021-12-06 17:45:12,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:45:12,504 INFO L470 AbstractCegarLoop]: Abstraction has 8612 states and 11912 transitions. [2021-12-06 17:45:12,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.166666666666666) internal successors, (158), 6 states have internal predecessors, (158), 2 states have call successors, (45), 8 states have call predecessors, (45), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-06 17:45:12,504 INFO L276 IsEmpty]: Start isEmpty. Operand 8612 states and 11912 transitions. [2021-12-06 17:45:12,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-12-06 17:45:12,514 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:45:12,514 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:12,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 17:45:12,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 17:45:12,716 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:45:12,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:45:12,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1953737053, now seen corresponding path program 2 times [2021-12-06 17:45:12,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:45:12,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074656956] [2021-12-06 17:45:12,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:45:12,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:45:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:12,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:45:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:12,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:45:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:12,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:45:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:12,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:45:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:12,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:45:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:12,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:45:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:12,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:45:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:12,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:45:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:45:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:45:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:45:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:45:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:45:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:45:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:45:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:45:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:45:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:45:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:45:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 17:45:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 17:45:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:45:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 17:45:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:45:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:45:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:45:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:45:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:45:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:45:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:45:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:45:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:13,222 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-12-06 17:45:13,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:45:13,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074656956] [2021-12-06 17:45:13,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074656956] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:45:13,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29639701] [2021-12-06 17:45:13,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:45:13,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:45:13,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:45:13,223 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:45:13,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 17:45:13,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:45:13,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:45:13,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:45:13,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:45:14,125 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-12-06 17:45:14,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:45:14,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29639701] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:45:14,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:45:14,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 12 [2021-12-06 17:45:14,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847429682] [2021-12-06 17:45:14,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:45:14,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:45:14,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:45:14,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:45:14,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:45:14,127 INFO L87 Difference]: Start difference. First operand 8612 states and 11912 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 3 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-06 17:45:15,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:45:15,818 INFO L93 Difference]: Finished difference Result 25786 states and 35671 transitions. [2021-12-06 17:45:15,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:45:15,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 3 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 294 [2021-12-06 17:45:15,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:45:15,911 INFO L225 Difference]: With dead ends: 25786 [2021-12-06 17:45:15,911 INFO L226 Difference]: Without dead ends: 25778 [2021-12-06 17:45:15,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:45:15,927 INFO L933 BasicCegarLoop]: 2784 mSDtfsCounter, 2384 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2384 SdHoareTripleChecker+Valid, 4935 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:45:15,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2384 Valid, 4935 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 17:45:15,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25778 states. [2021-12-06 17:45:17,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25778 to 25764. [2021-12-06 17:45:17,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25764 states, 18784 states have (on average 1.2435583475298126) internal successors, (23359), 19157 states have internal predecessors, (23359), 5276 states have call successors, (5276), 1311 states have call predecessors, (5276), 1703 states have return successors, (7015), 5442 states have call predecessors, (7015), 5275 states have call successors, (7015) [2021-12-06 17:45:17,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25764 states to 25764 states and 35650 transitions. [2021-12-06 17:45:17,255 INFO L78 Accepts]: Start accepts. Automaton has 25764 states and 35650 transitions. Word has length 294 [2021-12-06 17:45:17,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:45:17,255 INFO L470 AbstractCegarLoop]: Abstraction has 25764 states and 35650 transitions. [2021-12-06 17:45:17,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 3 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-06 17:45:17,256 INFO L276 IsEmpty]: Start isEmpty. Operand 25764 states and 35650 transitions. [2021-12-06 17:45:17,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-12-06 17:45:17,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:45:17,280 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:17,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 17:45:17,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 17:45:17,481 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:45:17,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:45:17,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1330112993, now seen corresponding path program 1 times [2021-12-06 17:45:17,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:45:17,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761206305] [2021-12-06 17:45:17,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:45:17,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:45:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:45:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:45:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:45:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:45:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:45:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:45:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:45:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:45:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:45:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:45:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:45:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:45:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:45:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:45:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:45:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:45:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:45:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:45:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:45:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 17:45:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:17,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 17:45:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:18,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:18,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:45:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:18,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 17:45:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:18,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:45:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:18,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:45:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:18,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:45:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:18,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:45:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:18,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:45:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:18,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:18,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:45:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:18,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:45:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:18,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:45:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:18,082 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-12-06 17:45:18,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:45:18,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761206305] [2021-12-06 17:45:18,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761206305] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:45:18,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:45:18,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 17:45:18,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347940451] [2021-12-06 17:45:18,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:45:18,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 17:45:18,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:45:18,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 17:45:18,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:45:18,084 INFO L87 Difference]: Start difference. First operand 25764 states and 35650 transitions. Second operand has 12 states, 12 states have (on average 12.916666666666666) internal successors, (155), 4 states have internal predecessors, (155), 2 states have call successors, (33), 9 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 1 states have call successors, (32) [2021-12-06 17:45:22,256 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 17:45:34,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:45:34,886 INFO L93 Difference]: Finished difference Result 81805 states and 121156 transitions. [2021-12-06 17:45:34,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-06 17:45:34,887 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.916666666666666) internal successors, (155), 4 states have internal predecessors, (155), 2 states have call successors, (33), 9 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 1 states have call successors, (32) Word has length 294 [2021-12-06 17:45:34,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:45:35,109 INFO L225 Difference]: With dead ends: 81805 [2021-12-06 17:45:35,110 INFO L226 Difference]: Without dead ends: 56067 [2021-12-06 17:45:35,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=282, Invalid=1124, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 17:45:35,182 INFO L933 BasicCegarLoop]: 1267 mSDtfsCounter, 5330 mSDsluCounter, 5953 mSDsCounter, 0 mSdLazyCounter, 7884 mSolverCounterSat, 3481 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5578 SdHoareTripleChecker+Valid, 7220 SdHoareTripleChecker+Invalid, 11366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3481 IncrementalHoareTripleChecker+Valid, 7884 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:45:35,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5578 Valid, 7220 Invalid, 11366 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3481 Valid, 7884 Invalid, 1 Unknown, 0 Unchecked, 13.4s Time] [2021-12-06 17:45:35,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56067 states. [2021-12-06 17:45:37,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56067 to 36996. [2021-12-06 17:45:37,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36996 states, 26992 states have (on average 1.244998518079431) internal successors, (33605), 27545 states have internal predecessors, (33605), 7572 states have call successors, (7572), 1875 states have call predecessors, (7572), 2431 states have return successors, (9991), 7786 states have call predecessors, (9991), 7571 states have call successors, (9991) [2021-12-06 17:45:37,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36996 states to 36996 states and 51168 transitions. [2021-12-06 17:45:37,817 INFO L78 Accepts]: Start accepts. Automaton has 36996 states and 51168 transitions. Word has length 294 [2021-12-06 17:45:37,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:45:37,818 INFO L470 AbstractCegarLoop]: Abstraction has 36996 states and 51168 transitions. [2021-12-06 17:45:37,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.916666666666666) internal successors, (155), 4 states have internal predecessors, (155), 2 states have call successors, (33), 9 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 1 states have call successors, (32) [2021-12-06 17:45:37,818 INFO L276 IsEmpty]: Start isEmpty. Operand 36996 states and 51168 transitions. [2021-12-06 17:45:37,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-12-06 17:45:37,849 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:45:37,849 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:37,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 17:45:37,849 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:45:37,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:45:37,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1230323824, now seen corresponding path program 1 times [2021-12-06 17:45:37,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:45:37,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834373515] [2021-12-06 17:45:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:45:37,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:45:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:37,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:45:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:37,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:45:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:37,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:45:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:37,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:45:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:37,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:45:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:37,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:45:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:37,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:45:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:37,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:45:38,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:45:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:45:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:45:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:45:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:45:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:45:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:45:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:45:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:45:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:45:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:45:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 17:45:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 17:45:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:45:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 17:45:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:45:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:45:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:45:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:45:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:45:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:45:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:45:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:45:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-12-06 17:45:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:38,284 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-12-06 17:45:38,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:45:38,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834373515] [2021-12-06 17:45:38,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834373515] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:45:38,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:45:38,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:45:38,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388242906] [2021-12-06 17:45:38,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:45:38,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:45:38,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:45:38,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:45:38,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:45:38,285 INFO L87 Difference]: Start difference. First operand 36996 states and 51168 transitions. Second operand has 10 states, 10 states have (on average 16.0) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (34), 9 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-12-06 17:45:41,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:45:50,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:45:50,058 INFO L93 Difference]: Finished difference Result 67548 states and 97770 transitions. [2021-12-06 17:45:50,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 17:45:50,059 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (34), 9 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 304 [2021-12-06 17:45:50,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:45:50,197 INFO L225 Difference]: With dead ends: 67548 [2021-12-06 17:45:50,197 INFO L226 Difference]: Without dead ends: 30573 [2021-12-06 17:45:50,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2021-12-06 17:45:50,270 INFO L933 BasicCegarLoop]: 1179 mSDtfsCounter, 1975 mSDsluCounter, 3893 mSDsCounter, 0 mSdLazyCounter, 4051 mSolverCounterSat, 1364 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2088 SdHoareTripleChecker+Valid, 5072 SdHoareTripleChecker+Invalid, 5416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1364 IncrementalHoareTripleChecker+Valid, 4051 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:45:50,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2088 Valid, 5072 Invalid, 5416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1364 Valid, 4051 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2021-12-06 17:45:50,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30573 states. [2021-12-06 17:45:51,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30573 to 23195. [2021-12-06 17:45:51,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23195 states, 16906 states have (on average 1.2428723530107655) internal successors, (21012), 17250 states have internal predecessors, (21012), 4728 states have call successors, (4728), 1194 states have call predecessors, (4728), 1560 states have return successors, (6327), 4881 states have call predecessors, (6327), 4727 states have call successors, (6327) [2021-12-06 17:45:51,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23195 states to 23195 states and 32067 transitions. [2021-12-06 17:45:51,847 INFO L78 Accepts]: Start accepts. Automaton has 23195 states and 32067 transitions. Word has length 304 [2021-12-06 17:45:51,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:45:51,847 INFO L470 AbstractCegarLoop]: Abstraction has 23195 states and 32067 transitions. [2021-12-06 17:45:51,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (34), 9 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-12-06 17:45:51,847 INFO L276 IsEmpty]: Start isEmpty. Operand 23195 states and 32067 transitions. [2021-12-06 17:45:51,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-12-06 17:45:51,863 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:45:51,863 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:51,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 17:45:51,863 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:45:51,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:45:51,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1930390194, now seen corresponding path program 1 times [2021-12-06 17:45:51,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:45:51,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605469122] [2021-12-06 17:45:51,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:45:51,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:45:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:51,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:45:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:51,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:45:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:51,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:45:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:45:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:45:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:45:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:45:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:45:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:45:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:45:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:45:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:45:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:45:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:45:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:45:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:45:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:45:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:45:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:45:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 17:45:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 17:45:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:45:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 17:45:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:45:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:45:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:45:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:45:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:45:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:45:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:45:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:45:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-12-06 17:45:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,285 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-12-06 17:45:52,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:45:52,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605469122] [2021-12-06 17:45:52,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605469122] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:45:52,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:45:52,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:45:52,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212267603] [2021-12-06 17:45:52,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:45:52,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:45:52,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:45:52,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:45:52,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:45:52,287 INFO L87 Difference]: Start difference. First operand 23195 states and 32067 transitions. Second operand has 10 states, 10 states have (on average 16.0) internal successors, (160), 3 states have internal predecessors, (160), 3 states have call successors, (34), 9 states have call predecessors, (34), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-06 17:45:55,580 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 17:46:04,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:46:04,609 INFO L93 Difference]: Finished difference Result 53456 states and 78323 transitions. [2021-12-06 17:46:04,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 17:46:04,609 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 3 states have internal predecessors, (160), 3 states have call successors, (34), 9 states have call predecessors, (34), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 304 [2021-12-06 17:46:04,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:46:04,714 INFO L225 Difference]: With dead ends: 53456 [2021-12-06 17:46:04,714 INFO L226 Difference]: Without dead ends: 29639 [2021-12-06 17:46:04,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2021-12-06 17:46:04,769 INFO L933 BasicCegarLoop]: 1336 mSDtfsCounter, 6182 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 4263 mSolverCounterSat, 4286 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6414 SdHoareTripleChecker+Valid, 4311 SdHoareTripleChecker+Invalid, 8550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4286 IncrementalHoareTripleChecker+Valid, 4263 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:46:04,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6414 Valid, 4311 Invalid, 8550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4286 Valid, 4263 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2021-12-06 17:46:04,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29639 states. [2021-12-06 17:46:05,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29639 to 16991. [2021-12-06 17:46:05,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16991 states, 12362 states have (on average 1.2379064876233619) internal successors, (15303), 12618 states have internal predecessors, (15303), 3486 states have call successors, (3486), 852 states have call predecessors, (3486), 1142 states have return successors, (4757), 3619 states have call predecessors, (4757), 3485 states have call successors, (4757) [2021-12-06 17:46:06,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16991 states to 16991 states and 23546 transitions. [2021-12-06 17:46:06,007 INFO L78 Accepts]: Start accepts. Automaton has 16991 states and 23546 transitions. Word has length 304 [2021-12-06 17:46:06,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:46:06,008 INFO L470 AbstractCegarLoop]: Abstraction has 16991 states and 23546 transitions. [2021-12-06 17:46:06,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 3 states have internal predecessors, (160), 3 states have call successors, (34), 9 states have call predecessors, (34), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-06 17:46:06,008 INFO L276 IsEmpty]: Start isEmpty. Operand 16991 states and 23546 transitions. [2021-12-06 17:46:06,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-12-06 17:46:06,018 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:46:06,019 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:06,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 17:46:06,019 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:46:06,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:46:06,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1995903771, now seen corresponding path program 1 times [2021-12-06 17:46:06,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:46:06,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121351938] [2021-12-06 17:46:06,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:46:06,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:46:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:46:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:46:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:46:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:46:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:46:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:46:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:46:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:46:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:46:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:46:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:46:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:46:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:46:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:46:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:46:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:46:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:46:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:46:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:46:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:46:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 17:46:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:46:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:46:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:46:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:46:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:46:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:46:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 17:46:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:46:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:46:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:46:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 17:46:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:46:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 17:46:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 17:46:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:46:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-06 17:46:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:06,664 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-06 17:46:06,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:46:06,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121351938] [2021-12-06 17:46:06,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121351938] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:46:06,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:46:06,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 17:46:06,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111957841] [2021-12-06 17:46:06,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:46:06,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 17:46:06,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:46:06,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 17:46:06,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:46:06,665 INFO L87 Difference]: Start difference. First operand 16991 states and 23546 transitions. Second operand has 13 states, 13 states have (on average 13.692307692307692) internal successors, (178), 4 states have internal predecessors, (178), 3 states have call successors, (35), 11 states have call predecessors, (35), 2 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-06 17:46:10,884 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 17:46:25,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:46:25,828 INFO L93 Difference]: Finished difference Result 35337 states and 53551 transitions. [2021-12-06 17:46:25,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 17:46:25,828 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.692307692307692) internal successors, (178), 4 states have internal predecessors, (178), 3 states have call successors, (35), 11 states have call predecessors, (35), 2 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 300 [2021-12-06 17:46:25,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:46:25,891 INFO L225 Difference]: With dead ends: 35337 [2021-12-06 17:46:25,891 INFO L226 Difference]: Without dead ends: 18489 [2021-12-06 17:46:25,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 17:46:25,935 INFO L933 BasicCegarLoop]: 1764 mSDtfsCounter, 5493 mSDsluCounter, 5948 mSDsCounter, 0 mSdLazyCounter, 7645 mSolverCounterSat, 5196 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5730 SdHoareTripleChecker+Valid, 7712 SdHoareTripleChecker+Invalid, 12842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5196 IncrementalHoareTripleChecker+Valid, 7645 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:46:25,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5730 Valid, 7712 Invalid, 12842 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5196 Valid, 7645 Invalid, 1 Unknown, 0 Unchecked, 17.4s Time] [2021-12-06 17:46:25,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18489 states. [2021-12-06 17:46:26,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18489 to 13907. [2021-12-06 17:46:26,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13907 states, 10132 states have (on average 1.2375641531780497) internal successors, (12539), 10341 states have internal predecessors, (12539), 2856 states have call successors, (2856), 689 states have call predecessors, (2856), 918 states have return successors, (3851), 2958 states have call predecessors, (3851), 2855 states have call successors, (3851) [2021-12-06 17:46:26,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13907 states to 13907 states and 19246 transitions. [2021-12-06 17:46:26,904 INFO L78 Accepts]: Start accepts. Automaton has 13907 states and 19246 transitions. Word has length 300 [2021-12-06 17:46:26,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:46:26,905 INFO L470 AbstractCegarLoop]: Abstraction has 13907 states and 19246 transitions. [2021-12-06 17:46:26,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.692307692307692) internal successors, (178), 4 states have internal predecessors, (178), 3 states have call successors, (35), 11 states have call predecessors, (35), 2 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-06 17:46:26,905 INFO L276 IsEmpty]: Start isEmpty. Operand 13907 states and 19246 transitions. [2021-12-06 17:46:26,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2021-12-06 17:46:26,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:46:26,913 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:26,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 17:46:26,913 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:46:26,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:46:26,913 INFO L85 PathProgramCache]: Analyzing trace with hash -328044559, now seen corresponding path program 1 times [2021-12-06 17:46:26,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:46:26,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905075447] [2021-12-06 17:46:26,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:46:26,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:46:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:46:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:46:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:46:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:46:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:46:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:46:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:46:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:46:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:46:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:46:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:46:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:46:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:46:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:46:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:46:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:46:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:46:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:46:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:46:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:46:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:46:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:46:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 17:46:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 17:46:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:46:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:46:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 17:46:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:46:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:46:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:46:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:46:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:46:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:46:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:46:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:46:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:46:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-06 17:46:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:46:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:46:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:27,639 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-12-06 17:46:27,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:46:27,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905075447] [2021-12-06 17:46:27,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905075447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:46:27,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:46:27,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 17:46:27,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563289826] [2021-12-06 17:46:27,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:46:27,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 17:46:27,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:46:27,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 17:46:27,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:46:27,641 INFO L87 Difference]: Start difference. First operand 13907 states and 19246 transitions. Second operand has 13 states, 13 states have (on average 13.23076923076923) internal successors, (172), 4 states have internal predecessors, (172), 3 states have call successors, (36), 10 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2021-12-06 17:46:31,261 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 17:46:38,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:46:38,585 INFO L93 Difference]: Finished difference Result 32206 states and 48528 transitions. [2021-12-06 17:46:38,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 17:46:38,585 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.23076923076923) internal successors, (172), 4 states have internal predecessors, (172), 3 states have call successors, (36), 10 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) Word has length 319 [2021-12-06 17:46:38,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:46:38,654 INFO L225 Difference]: With dead ends: 32206 [2021-12-06 17:46:38,654 INFO L226 Difference]: Without dead ends: 18442 [2021-12-06 17:46:38,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2021-12-06 17:46:38,696 INFO L933 BasicCegarLoop]: 1146 mSDtfsCounter, 3053 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 3795 mSolverCounterSat, 2612 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3165 SdHoareTripleChecker+Valid, 5828 SdHoareTripleChecker+Invalid, 6408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2612 IncrementalHoareTripleChecker+Valid, 3795 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:46:38,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3165 Valid, 5828 Invalid, 6408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2612 Valid, 3795 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2021-12-06 17:46:38,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18442 states. [2021-12-06 17:46:39,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18442 to 13977. [2021-12-06 17:46:39,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13977 states, 10182 states have (on average 1.237379689648399) internal successors, (12599), 10391 states have internal predecessors, (12599), 2866 states have call successors, (2866), 689 states have call predecessors, (2866), 928 states have return successors, (3931), 2978 states have call predecessors, (3931), 2865 states have call successors, (3931) [2021-12-06 17:46:39,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13977 states to 13977 states and 19396 transitions. [2021-12-06 17:46:39,665 INFO L78 Accepts]: Start accepts. Automaton has 13977 states and 19396 transitions. Word has length 319 [2021-12-06 17:46:39,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:46:39,665 INFO L470 AbstractCegarLoop]: Abstraction has 13977 states and 19396 transitions. [2021-12-06 17:46:39,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.23076923076923) internal successors, (172), 4 states have internal predecessors, (172), 3 states have call successors, (36), 10 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2021-12-06 17:46:39,665 INFO L276 IsEmpty]: Start isEmpty. Operand 13977 states and 19396 transitions. [2021-12-06 17:46:39,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-12-06 17:46:39,673 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:46:39,673 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:39,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 17:46:39,673 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:46:39,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:46:39,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1233881177, now seen corresponding path program 1 times [2021-12-06 17:46:39,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:46:39,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562907502] [2021-12-06 17:46:39,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:46:39,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:46:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:39,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:46:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:39,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:46:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:39,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:46:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:39,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:46:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:39,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:46:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:39,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:46:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:39,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:46:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:39,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:46:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:46:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:46:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:46:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:46:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:46:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:46:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:46:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:46:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:46:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:46:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:46:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:46:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:46:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:46:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 17:46:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 17:46:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:46:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:46:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:46:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 17:46:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:46:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:46:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:46:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:46:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:46:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:46:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:46:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:46:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:46:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-06 17:46:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:46:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:46:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,403 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-12-06 17:46:40,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:46:40,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562907502] [2021-12-06 17:46:40,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562907502] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:46:40,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:46:40,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 17:46:40,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421023381] [2021-12-06 17:46:40,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:46:40,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 17:46:40,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:46:40,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 17:46:40,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:46:40,405 INFO L87 Difference]: Start difference. First operand 13977 states and 19396 transitions. Second operand has 11 states, 11 states have (on average 15.909090909090908) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (37), 10 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-06 17:46:43,921 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 17:46:51,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:46:51,407 INFO L93 Difference]: Finished difference Result 32276 states and 49305 transitions. [2021-12-06 17:46:51,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 17:46:51,408 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.909090909090908) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (37), 10 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 325 [2021-12-06 17:46:51,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:46:51,470 INFO L225 Difference]: With dead ends: 32276 [2021-12-06 17:46:51,470 INFO L226 Difference]: Without dead ends: 18442 [2021-12-06 17:46:51,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2021-12-06 17:46:51,513 INFO L933 BasicCegarLoop]: 1151 mSDtfsCounter, 3154 mSDsluCounter, 3732 mSDsCounter, 0 mSdLazyCounter, 3473 mSolverCounterSat, 2649 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3264 SdHoareTripleChecker+Valid, 4883 SdHoareTripleChecker+Invalid, 6123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2649 IncrementalHoareTripleChecker+Valid, 3473 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:46:51,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3264 Valid, 4883 Invalid, 6123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2649 Valid, 3473 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2021-12-06 17:46:51,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18442 states. [2021-12-06 17:46:52,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18442 to 13977. [2021-12-06 17:46:52,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13977 states, 10182 states have (on average 1.2359065016696131) internal successors, (12584), 10391 states have internal predecessors, (12584), 2866 states have call successors, (2866), 689 states have call predecessors, (2866), 928 states have return successors, (3931), 2978 states have call predecessors, (3931), 2865 states have call successors, (3931) [2021-12-06 17:46:52,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13977 states to 13977 states and 19381 transitions. [2021-12-06 17:46:52,498 INFO L78 Accepts]: Start accepts. Automaton has 13977 states and 19381 transitions. Word has length 325 [2021-12-06 17:46:52,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:46:52,499 INFO L470 AbstractCegarLoop]: Abstraction has 13977 states and 19381 transitions. [2021-12-06 17:46:52,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.909090909090908) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (37), 10 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-06 17:46:52,499 INFO L276 IsEmpty]: Start isEmpty. Operand 13977 states and 19381 transitions. [2021-12-06 17:46:52,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-12-06 17:46:52,506 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:46:52,507 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:52,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 17:46:52,507 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:46:52,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:46:52,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1184603301, now seen corresponding path program 1 times [2021-12-06 17:46:52,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:46:52,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452787696] [2021-12-06 17:46:52,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:46:52,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:46:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:46:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:46:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:46:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:46:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:46:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:46:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:46:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:46:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:46:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:46:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:46:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:46:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:46:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:46:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:46:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:46:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:46:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:46:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:46:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:46:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:46:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:46:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:52,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 17:46:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:53,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 17:46:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:53,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:46:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:53,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:46:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:53,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:46:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:53,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 17:46:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:53,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:46:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:53,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:46:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:53,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:46:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:53,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:46:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:53,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:46:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:53,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:46:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:53,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:46:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:53,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:46:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:53,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:46:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:53,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-06 17:46:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:53,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:46:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:53,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:46:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-12-06 17:46:53,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:46:53,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452787696] [2021-12-06 17:46:53,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452787696] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:46:53,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:46:53,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 17:46:53,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869744873] [2021-12-06 17:46:53,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:46:53,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 17:46:53,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:46:53,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 17:46:53,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:46:53,165 INFO L87 Difference]: Start difference. First operand 13977 states and 19381 transitions. Second operand has 13 states, 13 states have (on average 13.461538461538462) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (37), 10 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-06 17:46:56,495 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 17:47:03,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:47:03,772 INFO L93 Difference]: Finished difference Result 34891 states and 53617 transitions. [2021-12-06 17:47:03,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 17:47:03,773 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.461538461538462) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (37), 10 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 325 [2021-12-06 17:47:03,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:47:03,844 INFO L225 Difference]: With dead ends: 34891 [2021-12-06 17:47:03,845 INFO L226 Difference]: Without dead ends: 21057 [2021-12-06 17:47:03,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2021-12-06 17:47:03,893 INFO L933 BasicCegarLoop]: 1209 mSDtfsCounter, 3465 mSDsluCounter, 4932 mSDsCounter, 0 mSdLazyCounter, 4151 mSolverCounterSat, 2695 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3578 SdHoareTripleChecker+Valid, 6141 SdHoareTripleChecker+Invalid, 6847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2695 IncrementalHoareTripleChecker+Valid, 4151 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:47:03,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3578 Valid, 6141 Invalid, 6847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2695 Valid, 4151 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2021-12-06 17:47:03,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21057 states. [2021-12-06 17:47:04,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21057 to 14007. [2021-12-06 17:47:04,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14007 states, 10212 states have (on average 1.2352134743439092) internal successors, (12614), 10421 states have internal predecessors, (12614), 2866 states have call successors, (2866), 689 states have call predecessors, (2866), 928 states have return successors, (3931), 2978 states have call predecessors, (3931), 2865 states have call successors, (3931) [2021-12-06 17:47:04,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14007 states to 14007 states and 19411 transitions. [2021-12-06 17:47:04,950 INFO L78 Accepts]: Start accepts. Automaton has 14007 states and 19411 transitions. Word has length 325 [2021-12-06 17:47:04,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:47:04,951 INFO L470 AbstractCegarLoop]: Abstraction has 14007 states and 19411 transitions. [2021-12-06 17:47:04,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.461538461538462) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (37), 10 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-06 17:47:04,951 INFO L276 IsEmpty]: Start isEmpty. Operand 14007 states and 19411 transitions. [2021-12-06 17:47:04,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-12-06 17:47:04,958 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:47:04,959 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:04,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 17:47:04,959 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:47:04,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:47:04,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1743892853, now seen corresponding path program 1 times [2021-12-06 17:47:04,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:47:04,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217023823] [2021-12-06 17:47:04,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:47:04,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:47:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:47:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:47:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:47:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:47:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:47:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:47:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:47:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:47:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:47:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:47:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:47:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:47:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:47:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:47:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:47:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:47:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:47:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:47:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:47:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 17:47:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 17:47:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:47:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:47:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 17:47:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:47:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:47:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:47:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:47:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:47:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:47:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:47:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:47:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-12-06 17:47:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:47:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:47:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:05,607 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2021-12-06 17:47:05,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:47:05,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217023823] [2021-12-06 17:47:05,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217023823] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:47:05,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:47:05,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 17:47:05,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912149384] [2021-12-06 17:47:05,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:47:05,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 17:47:05,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:47:05,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 17:47:05,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:47:05,609 INFO L87 Difference]: Start difference. First operand 14007 states and 19411 transitions. Second operand has 12 states, 12 states have (on average 15.666666666666666) internal successors, (188), 4 states have internal predecessors, (188), 2 states have call successors, (37), 10 states have call predecessors, (37), 3 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-06 17:47:08,907 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 17:47:15,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:47:15,805 INFO L93 Difference]: Finished difference Result 32450 states and 49376 transitions. [2021-12-06 17:47:15,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 17:47:15,806 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 15.666666666666666) internal successors, (188), 4 states have internal predecessors, (188), 2 states have call successors, (37), 10 states have call predecessors, (37), 3 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 335 [2021-12-06 17:47:15,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:47:15,869 INFO L225 Difference]: With dead ends: 32450 [2021-12-06 17:47:15,869 INFO L226 Difference]: Without dead ends: 18450 [2021-12-06 17:47:15,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=352, Unknown=0, NotChecked=0, Total=506 [2021-12-06 17:47:15,909 INFO L933 BasicCegarLoop]: 1171 mSDtfsCounter, 2999 mSDsluCounter, 3830 mSDsCounter, 0 mSdLazyCounter, 3220 mSolverCounterSat, 2553 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3112 SdHoareTripleChecker+Valid, 5001 SdHoareTripleChecker+Invalid, 5774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2553 IncrementalHoareTripleChecker+Valid, 3220 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:47:15,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3112 Valid, 5001 Invalid, 5774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2553 Valid, 3220 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2021-12-06 17:47:15,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18450 states. [2021-12-06 17:47:16,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18450 to 14018. [2021-12-06 17:47:16,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14018 states, 10223 states have (on average 1.2349603834490854) internal successors, (12625), 10432 states have internal predecessors, (12625), 2866 states have call successors, (2866), 689 states have call predecessors, (2866), 928 states have return successors, (3931), 2978 states have call predecessors, (3931), 2865 states have call successors, (3931) [2021-12-06 17:47:16,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14018 states to 14018 states and 19422 transitions. [2021-12-06 17:47:16,945 INFO L78 Accepts]: Start accepts. Automaton has 14018 states and 19422 transitions. Word has length 335 [2021-12-06 17:47:16,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:47:16,945 INFO L470 AbstractCegarLoop]: Abstraction has 14018 states and 19422 transitions. [2021-12-06 17:47:16,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.666666666666666) internal successors, (188), 4 states have internal predecessors, (188), 2 states have call successors, (37), 10 states have call predecessors, (37), 3 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-06 17:47:16,946 INFO L276 IsEmpty]: Start isEmpty. Operand 14018 states and 19422 transitions. [2021-12-06 17:47:16,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-12-06 17:47:16,954 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:47:16,954 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:16,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 17:47:16,954 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:47:16,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:47:16,954 INFO L85 PathProgramCache]: Analyzing trace with hash 330435429, now seen corresponding path program 1 times [2021-12-06 17:47:16,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:47:16,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335822567] [2021-12-06 17:47:16,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:47:16,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:47:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:47:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:47:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:47:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:47:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:47:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:47:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:47:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:47:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:47:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:47:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:47:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:47:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:47:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:47:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:47:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:47:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:47:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:47:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:47:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 17:47:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 17:47:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:47:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:47:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 17:47:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:47:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:47:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:47:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:47:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:47:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:47:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:47:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:47:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-06 17:47:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:47:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:47:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:17,544 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-12-06 17:47:17,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:47:17,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335822567] [2021-12-06 17:47:17,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335822567] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:47:17,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883118010] [2021-12-06 17:47:17,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:47:17,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:47:17,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:47:17,545 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:47:17,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 17:47:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:18,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 3223 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 17:47:18,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:47:18,293 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-12-06 17:47:18,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:47:18,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883118010] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:47:18,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:47:18,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2021-12-06 17:47:18,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139045741] [2021-12-06 17:47:18,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:47:18,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:47:18,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:47:18,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:47:18,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:47:18,294 INFO L87 Difference]: Start difference. First operand 14018 states and 19422 transitions. Second operand has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-12-06 17:47:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:47:19,452 INFO L93 Difference]: Finished difference Result 33152 states and 47980 transitions. [2021-12-06 17:47:19,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:47:19,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 337 [2021-12-06 17:47:19,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:47:19,514 INFO L225 Difference]: With dead ends: 33152 [2021-12-06 17:47:19,514 INFO L226 Difference]: Without dead ends: 19278 [2021-12-06 17:47:19,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:47:19,553 INFO L933 BasicCegarLoop]: 1481 mSDtfsCounter, 556 mSDsluCounter, 4291 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 5772 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:47:19,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [607 Valid, 5772 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:47:19,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19278 states. [2021-12-06 17:47:20,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19278 to 14048. [2021-12-06 17:47:20,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14048 states, 10253 states have (on average 1.2342728957378328) internal successors, (12655), 10462 states have internal predecessors, (12655), 2866 states have call successors, (2866), 689 states have call predecessors, (2866), 928 states have return successors, (3931), 2978 states have call predecessors, (3931), 2865 states have call successors, (3931) [2021-12-06 17:47:20,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14048 states to 14048 states and 19452 transitions. [2021-12-06 17:47:20,537 INFO L78 Accepts]: Start accepts. Automaton has 14048 states and 19452 transitions. Word has length 337 [2021-12-06 17:47:20,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:47:20,538 INFO L470 AbstractCegarLoop]: Abstraction has 14048 states and 19452 transitions. [2021-12-06 17:47:20,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-12-06 17:47:20,538 INFO L276 IsEmpty]: Start isEmpty. Operand 14048 states and 19452 transitions. [2021-12-06 17:47:20,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-12-06 17:47:20,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:47:20,546 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:20,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-06 17:47:20,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:47:20,748 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:47:20,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:47:20,749 INFO L85 PathProgramCache]: Analyzing trace with hash 310894307, now seen corresponding path program 1 times [2021-12-06 17:47:20,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:47:20,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358386630] [2021-12-06 17:47:20,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:47:20,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:47:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:20,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:47:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:20,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:47:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:20,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:47:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:20,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:47:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:20,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:47:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:20,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:47:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:20,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:47:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:20,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:47:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:47:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:47:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:47:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:47:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:47:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 17:47:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 17:47:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:47:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 17:47:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 17:47:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:47:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 17:47:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 17:47:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:47:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:47:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 17:47:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:47:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:47:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:47:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:47:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:47:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:47:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:47:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:47:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-06 17:47:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:47:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:47:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,346 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-12-06 17:47:21,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:47:21,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358386630] [2021-12-06 17:47:21,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358386630] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:47:21,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513032926] [2021-12-06 17:47:21,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:47:21,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:47:21,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:47:21,347 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:47:21,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 17:47:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:21,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 3230 conjuncts, 50 conjunts are in the unsatisfiable core [2021-12-06 17:47:21,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:47:22,374 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-06 17:47:22,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:47:23,054 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 17:47:23,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513032926] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:47:23,054 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:47:23,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 10] total 30 [2021-12-06 17:47:23,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128202569] [2021-12-06 17:47:23,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:47:23,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 17:47:23,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:47:23,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 17:47:23,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2021-12-06 17:47:23,056 INFO L87 Difference]: Start difference. First operand 14048 states and 19452 transitions. Second operand has 30 states, 30 states have (on average 11.033333333333333) internal successors, (331), 16 states have internal predecessors, (331), 2 states have call successors, (90), 10 states have call predecessors, (90), 10 states have return successors, (77), 8 states have call predecessors, (77), 2 states have call successors, (77) [2021-12-06 17:47:29,159 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 17:47:44,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:47:44,482 INFO L93 Difference]: Finished difference Result 32347 states and 49190 transitions. [2021-12-06 17:47:44,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-06 17:47:44,483 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 11.033333333333333) internal successors, (331), 16 states have internal predecessors, (331), 2 states have call successors, (90), 10 states have call predecessors, (90), 10 states have return successors, (77), 8 states have call predecessors, (77), 2 states have call successors, (77) Word has length 337 [2021-12-06 17:47:44,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:47:44,539 INFO L225 Difference]: With dead ends: 32347 [2021-12-06 17:47:44,539 INFO L226 Difference]: Without dead ends: 18423 [2021-12-06 17:47:44,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 735 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=516, Invalid=2790, Unknown=0, NotChecked=0, Total=3306 [2021-12-06 17:47:44,572 INFO L933 BasicCegarLoop]: 1143 mSDtfsCounter, 3354 mSDsluCounter, 16374 mSDsCounter, 0 mSdLazyCounter, 11316 mSolverCounterSat, 2992 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3467 SdHoareTripleChecker+Valid, 17517 SdHoareTripleChecker+Invalid, 14309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2992 IncrementalHoareTripleChecker+Valid, 11316 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:47:44,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3467 Valid, 17517 Invalid, 14309 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2992 Valid, 11316 Invalid, 1 Unknown, 0 Unchecked, 18.9s Time] [2021-12-06 17:47:44,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18423 states. [2021-12-06 17:47:45,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18423 to 14148. [2021-12-06 17:47:45,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14148 states, 10333 states have (on average 1.2324591115842447) internal successors, (12735), 10532 states have internal predecessors, (12735), 2866 states have call successors, (2866), 689 states have call predecessors, (2866), 948 states have return successors, (3993), 3008 states have call predecessors, (3993), 2865 states have call successors, (3993) [2021-12-06 17:47:45,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14148 states to 14148 states and 19594 transitions. [2021-12-06 17:47:45,643 INFO L78 Accepts]: Start accepts. Automaton has 14148 states and 19594 transitions. Word has length 337 [2021-12-06 17:47:45,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:47:45,643 INFO L470 AbstractCegarLoop]: Abstraction has 14148 states and 19594 transitions. [2021-12-06 17:47:45,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 11.033333333333333) internal successors, (331), 16 states have internal predecessors, (331), 2 states have call successors, (90), 10 states have call predecessors, (90), 10 states have return successors, (77), 8 states have call predecessors, (77), 2 states have call successors, (77) [2021-12-06 17:47:45,644 INFO L276 IsEmpty]: Start isEmpty. Operand 14148 states and 19594 transitions. [2021-12-06 17:47:45,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-12-06 17:47:45,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:47:45,652 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:47:45,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-06 17:47:45,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 17:47:45,854 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:47:45,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:47:45,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1176348594, now seen corresponding path program 2 times [2021-12-06 17:47:45,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:47:45,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770694468] [2021-12-06 17:47:45,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:47:45,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:47:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:47:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:47:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:47:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:47:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:47:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:47:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:47:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:47:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:47:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:47:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:47:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:47:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 17:47:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 17:47:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:47:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:47:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 17:47:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:47:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:47:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 17:47:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 17:47:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 17:47:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:47:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:47:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 17:47:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:47:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:47:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:47:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:47:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:47:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:47:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:47:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:47:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-06 17:47:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:47:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:47:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:46,495 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-12-06 17:47:46,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:47:46,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770694468] [2021-12-06 17:47:46,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770694468] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:47:46,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312050156] [2021-12-06 17:47:46,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:47:46,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:47:46,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:47:46,496 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:47:46,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 17:47:47,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:47:47,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:47:47,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 3271 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-06 17:47:47,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:47:47,898 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-12-06 17:47:47,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:47:47,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312050156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:47:47,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:47:47,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [13] total 25 [2021-12-06 17:47:47,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621236725] [2021-12-06 17:47:47,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:47:47,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 17:47:47,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:47:47,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 17:47:47,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-12-06 17:47:47,900 INFO L87 Difference]: Start difference. First operand 14148 states and 19594 transitions. Second operand has 14 states, 13 states have (on average 15.538461538461538) internal successors, (202), 11 states have internal predecessors, (202), 4 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (38), 6 states have call predecessors, (38), 4 states have call successors, (38) [2021-12-06 17:47:50,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:47:50,485 INFO L93 Difference]: Finished difference Result 36657 states and 53509 transitions. [2021-12-06 17:47:50,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 17:47:50,486 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 15.538461538461538) internal successors, (202), 11 states have internal predecessors, (202), 4 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (38), 6 states have call predecessors, (38), 4 states have call successors, (38) Word has length 344 [2021-12-06 17:47:50,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:47:50,581 INFO L225 Difference]: With dead ends: 36657 [2021-12-06 17:47:50,581 INFO L226 Difference]: Without dead ends: 22653 [2021-12-06 17:47:50,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=1572, Unknown=0, NotChecked=0, Total=1722 [2021-12-06 17:47:50,621 INFO L933 BasicCegarLoop]: 2589 mSDtfsCounter, 2047 mSDsluCounter, 29795 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 32384 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:47:50,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2048 Valid, 32384 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 17:47:50,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22653 states. [2021-12-06 17:47:52,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22653 to 20685. [2021-12-06 17:47:52,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20685 states, 15096 states have (on average 1.2254239533651299) internal successors, (18499), 15383 states have internal predecessors, (18499), 4130 states have call successors, (4130), 1058 states have call predecessors, (4130), 1458 states have return successors, (6477), 4362 states have call predecessors, (6477), 4129 states have call successors, (6477) [2021-12-06 17:47:52,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20685 states to 20685 states and 29106 transitions. [2021-12-06 17:47:52,261 INFO L78 Accepts]: Start accepts. Automaton has 20685 states and 29106 transitions. Word has length 344 [2021-12-06 17:47:52,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:47:52,261 INFO L470 AbstractCegarLoop]: Abstraction has 20685 states and 29106 transitions. [2021-12-06 17:47:52,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 15.538461538461538) internal successors, (202), 11 states have internal predecessors, (202), 4 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (38), 6 states have call predecessors, (38), 4 states have call successors, (38) [2021-12-06 17:47:52,262 INFO L276 IsEmpty]: Start isEmpty. Operand 20685 states and 29106 transitions. [2021-12-06 17:47:52,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2021-12-06 17:47:52,269 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:47:52,269 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:52,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-06 17:47:52,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:47:52,471 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:47:52,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:47:52,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1023442620, now seen corresponding path program 1 times [2021-12-06 17:47:52,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:47:52,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105579129] [2021-12-06 17:47:52,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:47:52,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:47:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:47:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:47:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:47:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:47:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:47:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:47:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:47:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:47:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:47:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:47:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 17:47:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:47:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:47:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:47:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:47:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:47:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:47:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:47:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:47:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:47:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:47:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:47:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:47:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 17:47:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:47:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:52,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:47:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:53,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:47:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:53,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:47:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:53,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:47:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:53,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:47:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:53,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 17:47:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:53,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:47:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:53,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:47:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:53,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:53,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 17:47:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:53,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:47:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:53,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 17:47:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:53,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 17:47:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:53,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:47:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:53,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-06 17:47:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:53,139 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-12-06 17:47:53,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:47:53,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105579129] [2021-12-06 17:47:53,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105579129] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:47:53,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73857005] [2021-12-06 17:47:53,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:47:53,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:47:53,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:47:53,140 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:47:53,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 17:47:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:53,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 3745 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 17:47:53,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:47:53,943 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-12-06 17:47:53,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:47:53,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73857005] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:47:53,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:47:53,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2021-12-06 17:47:53,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814128198] [2021-12-06 17:47:53,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:47:53,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:47:53,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:47:53,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:47:53,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:47:53,945 INFO L87 Difference]: Start difference. First operand 20685 states and 29106 transitions. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 4 states have internal predecessors, (210), 2 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (40), 3 states have call predecessors, (40), 2 states have call successors, (40) [2021-12-06 17:47:56,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:47:56,670 INFO L93 Difference]: Finished difference Result 57925 states and 81552 transitions. [2021-12-06 17:47:56,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:47:56,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 4 states have internal predecessors, (210), 2 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (40), 3 states have call predecessors, (40), 2 states have call successors, (40) Word has length 349 [2021-12-06 17:47:56,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:47:56,798 INFO L225 Difference]: With dead ends: 57925 [2021-12-06 17:47:56,798 INFO L226 Difference]: Without dead ends: 37384 [2021-12-06 17:47:56,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-12-06 17:47:56,848 INFO L933 BasicCegarLoop]: 2548 mSDtfsCounter, 1253 mSDsluCounter, 6382 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 8930 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:47:56,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1255 Valid, 8930 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:47:56,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37384 states. [2021-12-06 17:47:58,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37384 to 28969. [2021-12-06 17:47:58,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28969 states, 21113 states have (on average 1.2241746791076589) internal successors, (25846), 21522 states have internal predecessors, (25846), 5797 states have call successors, (5797), 1488 states have call predecessors, (5797), 2058 states have return successors, (9133), 6125 states have call predecessors, (9133), 5796 states have call successors, (9133) [2021-12-06 17:47:59,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28969 states to 28969 states and 40776 transitions. [2021-12-06 17:47:59,113 INFO L78 Accepts]: Start accepts. Automaton has 28969 states and 40776 transitions. Word has length 349 [2021-12-06 17:47:59,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:47:59,114 INFO L470 AbstractCegarLoop]: Abstraction has 28969 states and 40776 transitions. [2021-12-06 17:47:59,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 4 states have internal predecessors, (210), 2 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (40), 3 states have call predecessors, (40), 2 states have call successors, (40) [2021-12-06 17:47:59,114 INFO L276 IsEmpty]: Start isEmpty. Operand 28969 states and 40776 transitions. [2021-12-06 17:47:59,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2021-12-06 17:47:59,124 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:47:59,124 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:47:59,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 17:47:59,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-06 17:47:59,327 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:47:59,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:47:59,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1671473314, now seen corresponding path program 1 times [2021-12-06 17:47:59,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:47:59,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29125232] [2021-12-06 17:47:59,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:47:59,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:47:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:59,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:47:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:59,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:47:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:59,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:47:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:59,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:47:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:59,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:47:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:59,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:47:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:59,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:47:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:59,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:48:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:48:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:48:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:48:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:48:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 17:48:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 17:48:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:48:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:48:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 17:48:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:48:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:48:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 17:48:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 17:48:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 17:48:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:48:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-06 17:48:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:48:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:48:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-06 17:48:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:48:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:48:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-06 17:48:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:48:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:48:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-06 17:48:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2021-12-06 17:48:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:48:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:48:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:00,551 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-12-06 17:48:00,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:48:00,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29125232] [2021-12-06 17:48:00,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29125232] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:48:00,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900634100] [2021-12-06 17:48:00,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:48:00,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:48:00,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:48:00,552 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:48:00,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 17:48:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:01,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 4124 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 17:48:01,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:48:01,529 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2021-12-06 17:48:01,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:48:01,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900634100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:48:01,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:48:01,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-06 17:48:01,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457090664] [2021-12-06 17:48:01,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:48:01,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:48:01,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:48:01,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:48:01,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:48:01,531 INFO L87 Difference]: Start difference. First operand 28969 states and 40776 transitions. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-06 17:48:03,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:48:03,990 INFO L93 Difference]: Finished difference Result 63233 states and 93290 transitions. [2021-12-06 17:48:03,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:48:03,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 398 [2021-12-06 17:48:03,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:48:04,130 INFO L225 Difference]: With dead ends: 63233 [2021-12-06 17:48:04,130 INFO L226 Difference]: Without dead ends: 34408 [2021-12-06 17:48:04,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:48:04,227 INFO L933 BasicCegarLoop]: 1595 mSDtfsCounter, 576 mSDsluCounter, 3812 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 5407 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:48:04,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 5407 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:48:04,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34408 states. [2021-12-06 17:48:06,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34408 to 29046. [2021-12-06 17:48:06,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29046 states, 21183 states have (on average 1.2231034319973564) internal successors, (25909), 21599 states have internal predecessors, (25909), 5797 states have call successors, (5797), 1488 states have call predecessors, (5797), 2065 states have return successors, (9143), 6125 states have call predecessors, (9143), 5796 states have call successors, (9143) [2021-12-06 17:48:06,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29046 states to 29046 states and 40849 transitions. [2021-12-06 17:48:06,525 INFO L78 Accepts]: Start accepts. Automaton has 29046 states and 40849 transitions. Word has length 398 [2021-12-06 17:48:06,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:48:06,525 INFO L470 AbstractCegarLoop]: Abstraction has 29046 states and 40849 transitions. [2021-12-06 17:48:06,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-06 17:48:06,526 INFO L276 IsEmpty]: Start isEmpty. Operand 29046 states and 40849 transitions. [2021-12-06 17:48:06,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-12-06 17:48:06,537 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:48:06,537 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:48:06,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-06 17:48:06,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:48:06,739 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:48:06,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:48:06,741 INFO L85 PathProgramCache]: Analyzing trace with hash -102729649, now seen corresponding path program 1 times [2021-12-06 17:48:06,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:48:06,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982120323] [2021-12-06 17:48:06,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:48:06,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:48:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:06,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:48:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:06,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:48:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:06,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:48:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:06,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:48:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:06,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:48:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:06,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:48:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:06,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:48:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:48:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:48:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:48:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:48:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:48:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 17:48:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 17:48:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:48:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:48:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 17:48:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:48:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:48:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 17:48:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-06 17:48:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:48:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:48:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:48:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:48:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:48:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:48:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:48:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:48:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:48:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:48:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:48:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:48:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 17:48:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:48:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:48:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:48:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:48:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:48:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:48:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 17:48:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:48:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:48:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 17:48:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:48:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 17:48:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 17:48:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:48:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-06 17:48:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:07,563 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2021-12-06 17:48:07,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:48:07,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982120323] [2021-12-06 17:48:07,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982120323] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:48:07,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772536916] [2021-12-06 17:48:07,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:48:07,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:48:07,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:48:07,564 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:48:07,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 17:48:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:08,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 4290 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:48:08,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:48:08,601 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-12-06 17:48:08,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:48:08,995 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2021-12-06 17:48:08,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772536916] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:48:08,995 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:48:08,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 15 [2021-12-06 17:48:08,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180449158] [2021-12-06 17:48:08,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:48:08,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 17:48:08,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:48:08,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 17:48:08,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:48:08,997 INFO L87 Difference]: Start difference. First operand 29046 states and 40849 transitions. Second operand has 15 states, 15 states have (on average 25.0) internal successors, (375), 6 states have internal predecessors, (375), 4 states have call successors, (104), 11 states have call predecessors, (104), 2 states have return successors, (74), 4 states have call predecessors, (74), 4 states have call successors, (74) [2021-12-06 17:48:15,665 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 17:48:21,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:48:21,681 INFO L93 Difference]: Finished difference Result 67377 states and 105638 transitions. [2021-12-06 17:48:21,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 17:48:21,682 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 25.0) internal successors, (375), 6 states have internal predecessors, (375), 4 states have call successors, (104), 11 states have call predecessors, (104), 2 states have return successors, (74), 4 states have call predecessors, (74), 4 states have call successors, (74) Word has length 433 [2021-12-06 17:48:21,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:48:21,839 INFO L225 Difference]: With dead ends: 67377 [2021-12-06 17:48:21,839 INFO L226 Difference]: Without dead ends: 38475 [2021-12-06 17:48:21,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 997 GetRequests, 971 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2021-12-06 17:48:21,928 INFO L933 BasicCegarLoop]: 1150 mSDtfsCounter, 2958 mSDsluCounter, 4311 mSDsCounter, 0 mSdLazyCounter, 3625 mSolverCounterSat, 2577 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3076 SdHoareTripleChecker+Valid, 5461 SdHoareTripleChecker+Invalid, 6203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2577 IncrementalHoareTripleChecker+Valid, 3625 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:48:21,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3076 Valid, 5461 Invalid, 6203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2577 Valid, 3625 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2021-12-06 17:48:21,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38475 states. [2021-12-06 17:48:24,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38475 to 29298. [2021-12-06 17:48:24,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29298 states, 21372 states have (on average 1.2211304510574583) internal successors, (26098), 21788 states have internal predecessors, (26098), 5860 states have call successors, (5860), 1488 states have call predecessors, (5860), 2065 states have return successors, (9206), 6188 states have call predecessors, (9206), 5859 states have call successors, (9206) [2021-12-06 17:48:24,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29298 states to 29298 states and 41164 transitions. [2021-12-06 17:48:24,463 INFO L78 Accepts]: Start accepts. Automaton has 29298 states and 41164 transitions. Word has length 433 [2021-12-06 17:48:24,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:48:24,463 INFO L470 AbstractCegarLoop]: Abstraction has 29298 states and 41164 transitions. [2021-12-06 17:48:24,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 25.0) internal successors, (375), 6 states have internal predecessors, (375), 4 states have call successors, (104), 11 states have call predecessors, (104), 2 states have return successors, (74), 4 states have call predecessors, (74), 4 states have call successors, (74) [2021-12-06 17:48:24,463 INFO L276 IsEmpty]: Start isEmpty. Operand 29298 states and 41164 transitions. [2021-12-06 17:48:24,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2021-12-06 17:48:24,476 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:48:24,476 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:48:24,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 17:48:24,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:48:24,678 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:48:24,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:48:24,679 INFO L85 PathProgramCache]: Analyzing trace with hash 312808699, now seen corresponding path program 2 times [2021-12-06 17:48:24,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:48:24,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948295427] [2021-12-06 17:48:24,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:48:24,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:48:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:24,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:48:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:24,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:48:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:24,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:48:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:24,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:48:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:24,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:48:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:24,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:48:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:24,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:48:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:24,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:48:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:48:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:48:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:48:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:48:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 17:48:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 17:48:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:48:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:48:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 17:48:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:48:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:48:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 17:48:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-06 17:48:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:48:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:48:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:48:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:48:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:48:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:48:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:48:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:48:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:48:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:48:25,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:48:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:48:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:48:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:48:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:48:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 17:48:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:48:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:48:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:48:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:48:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:48:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:48:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 17:48:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:48:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:48:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 17:48:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:48:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 17:48:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 17:48:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:48:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-06 17:48:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2021-12-06 17:48:25,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:48:25,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948295427] [2021-12-06 17:48:25,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948295427] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:48:25,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131829985] [2021-12-06 17:48:25,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:48:25,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:48:25,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:48:25,558 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:48:25,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 17:48:26,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:48:26,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:48:26,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 4347 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 17:48:26,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:48:26,855 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2021-12-06 17:48:26,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:48:26,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131829985] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:48:26,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:48:26,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 15 [2021-12-06 17:48:26,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253795362] [2021-12-06 17:48:26,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:48:26,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:48:26,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:48:26,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:48:26,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:48:26,857 INFO L87 Difference]: Start difference. First operand 29298 states and 41164 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-12-06 17:48:29,072 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 17:48:30,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:48:30,964 INFO L93 Difference]: Finished difference Result 58440 states and 84533 transitions. [2021-12-06 17:48:30,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:48:30,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 454 [2021-12-06 17:48:30,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:48:31,068 INFO L225 Difference]: With dead ends: 58440 [2021-12-06 17:48:31,068 INFO L226 Difference]: Without dead ends: 29286 [2021-12-06 17:48:31,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:48:31,136 INFO L933 BasicCegarLoop]: 1294 mSDtfsCounter, 20 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:48:31,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 2557 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 17:48:31,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29286 states. [2021-12-06 17:48:33,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29286 to 29286. [2021-12-06 17:48:33,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29286 states, 21366 states have (on average 1.2209117289150988) internal successors, (26086), 21782 states have internal predecessors, (26086), 5854 states have call successors, (5854), 1488 states have call predecessors, (5854), 2065 states have return successors, (9200), 6182 states have call predecessors, (9200), 5853 states have call successors, (9200) [2021-12-06 17:48:33,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29286 states to 29286 states and 41140 transitions. [2021-12-06 17:48:33,357 INFO L78 Accepts]: Start accepts. Automaton has 29286 states and 41140 transitions. Word has length 454 [2021-12-06 17:48:33,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:48:33,358 INFO L470 AbstractCegarLoop]: Abstraction has 29286 states and 41140 transitions. [2021-12-06 17:48:33,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-12-06 17:48:33,358 INFO L276 IsEmpty]: Start isEmpty. Operand 29286 states and 41140 transitions. [2021-12-06 17:48:33,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2021-12-06 17:48:33,370 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:48:33,371 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:48:33,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 17:48:33,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-12-06 17:48:33,573 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:48:33,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:48:33,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1513623749, now seen corresponding path program 1 times [2021-12-06 17:48:33,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:48:33,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071901418] [2021-12-06 17:48:33,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:48:33,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:48:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:33,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:48:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:33,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:48:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:33,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:48:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:33,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:48:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:33,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:48:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:33,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:48:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:33,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:48:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:33,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:48:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:33,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:48:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:33,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:48:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:33,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:33,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:33,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:48:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:33,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:48:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:33,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 17:48:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:33,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 17:48:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:33,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:48:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:33,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 17:48:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:33,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 17:48:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 17:48:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:48:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 17:48:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-06 17:48:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:48:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:48:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:48:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:48:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:48:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:48:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:48:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:48:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:48:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:48:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:48:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:48:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:48:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:48:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:48:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 17:48:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:48:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:48:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:48:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:48:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:48:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:48:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 17:48:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:48:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:48:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 17:48:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:48:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 17:48:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 17:48:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 17:48:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-06 17:48:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:34,458 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2021-12-06 17:48:34,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:48:34,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071901418] [2021-12-06 17:48:34,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071901418] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:48:34,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940467375] [2021-12-06 17:48:34,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:48:34,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:48:34,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:48:34,459 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:48:34,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 17:48:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:35,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 4347 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 17:48:35,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:48:35,570 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2021-12-06 17:48:35,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:48:36,229 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2021-12-06 17:48:36,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940467375] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:48:36,229 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:48:36,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 6] total 21 [2021-12-06 17:48:36,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081408957] [2021-12-06 17:48:36,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:48:36,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 17:48:36,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:48:36,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 17:48:36,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2021-12-06 17:48:36,231 INFO L87 Difference]: Start difference. First operand 29286 states and 41140 transitions. Second operand has 21 states, 20 states have (on average 19.1) internal successors, (382), 11 states have internal predecessors, (382), 3 states have call successors, (102), 11 states have call predecessors, (102), 5 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) [2021-12-06 17:48:46,401 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 17:48:55,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:48:55,426 INFO L93 Difference]: Finished difference Result 67517 states and 107081 transitions. [2021-12-06 17:48:55,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 17:48:55,427 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 19.1) internal successors, (382), 11 states have internal predecessors, (382), 3 states have call successors, (102), 11 states have call predecessors, (102), 5 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) Word has length 454 [2021-12-06 17:48:55,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:48:55,614 INFO L225 Difference]: With dead ends: 67517 [2021-12-06 17:48:55,614 INFO L226 Difference]: Without dead ends: 38220 [2021-12-06 17:48:55,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1051 GetRequests, 1015 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=304, Invalid=1102, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 17:48:55,728 INFO L933 BasicCegarLoop]: 1118 mSDtfsCounter, 1891 mSDsluCounter, 9880 mSDsCounter, 0 mSdLazyCounter, 8089 mSolverCounterSat, 1139 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2028 SdHoareTripleChecker+Valid, 10998 SdHoareTripleChecker+Invalid, 9229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1139 IncrementalHoareTripleChecker+Valid, 8089 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:48:55,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2028 Valid, 10998 Invalid, 9229 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1139 Valid, 8089 Invalid, 1 Unknown, 0 Unchecked, 15.5s Time] [2021-12-06 17:48:55,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38220 states. [2021-12-06 17:48:58,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38220 to 29342. [2021-12-06 17:48:58,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29342 states, 21422 states have (on average 1.221361217440015) internal successors, (26164), 21844 states have internal predecessors, (26164), 5848 states have call successors, (5848), 1488 states have call predecessors, (5848), 2071 states have return successors, (9209), 6176 states have call predecessors, (9209), 5847 states have call successors, (9209) [2021-12-06 17:48:58,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29342 states to 29342 states and 41221 transitions. [2021-12-06 17:48:58,388 INFO L78 Accepts]: Start accepts. Automaton has 29342 states and 41221 transitions. Word has length 454 [2021-12-06 17:48:58,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:48:58,388 INFO L470 AbstractCegarLoop]: Abstraction has 29342 states and 41221 transitions. [2021-12-06 17:48:58,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 19.1) internal successors, (382), 11 states have internal predecessors, (382), 3 states have call successors, (102), 11 states have call predecessors, (102), 5 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) [2021-12-06 17:48:58,389 INFO L276 IsEmpty]: Start isEmpty. Operand 29342 states and 41221 transitions. [2021-12-06 17:48:58,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2021-12-06 17:48:58,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:48:58,401 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:48:58,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 17:48:58,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:48:58,603 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:48:58,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:48:58,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1343842165, now seen corresponding path program 1 times [2021-12-06 17:48:58,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:48:58,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756787372] [2021-12-06 17:48:58,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:48:58,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:48:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:58,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:48:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:58,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:48:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:58,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:48:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:58,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:48:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:58,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:48:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:58,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:48:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:58,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:48:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:48:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:48:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:48:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:48:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:48:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:48:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:48:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 17:48:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:48:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:48:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 17:48:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 17:48:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 17:48:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 17:48:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 17:48:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:48:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:48:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:48:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:48:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:48:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:48:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:48:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:48:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:48:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:48:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:48:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:48:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:48:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:48:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:48:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 17:48:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:48:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:48:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:48:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:48:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:48:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:48:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:48:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 17:48:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:48:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:48:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 17:48:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:48:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:48:59,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 17:48:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:00,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 17:49:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:00,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 17:49:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:00,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-06 17:49:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:00,031 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2021-12-06 17:49:00,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:00,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756787372] [2021-12-06 17:49:00,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756787372] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:49:00,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518247996] [2021-12-06 17:49:00,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:00,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:49:00,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:49:00,032 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:49:00,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 17:49:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:00,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 4494 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 17:49:00,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:49:01,248 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-12-06 17:49:01,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:49:01,714 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-12-06 17:49:01,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518247996] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:49:01,714 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:49:01,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 4] total 17 [2021-12-06 17:49:01,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836023771] [2021-12-06 17:49:01,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:49:01,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 17:49:01,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:01,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 17:49:01,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:49:01,716 INFO L87 Difference]: Start difference. First operand 29342 states and 41221 transitions. Second operand has 17 states, 17 states have (on average 22.941176470588236) internal successors, (390), 9 states have internal predecessors, (390), 5 states have call successors, (98), 11 states have call predecessors, (98), 3 states have return successors, (81), 4 states have call predecessors, (81), 5 states have call successors, (81) [2021-12-06 17:49:13,233 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 17:49:28,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:28,846 INFO L93 Difference]: Finished difference Result 68638 states and 109134 transitions. [2021-12-06 17:49:28,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-06 17:49:28,847 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 22.941176470588236) internal successors, (390), 9 states have internal predecessors, (390), 5 states have call successors, (98), 11 states have call predecessors, (98), 3 states have return successors, (81), 4 states have call predecessors, (81), 5 states have call successors, (81) Word has length 461 [2021-12-06 17:49:28,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:29,008 INFO L225 Difference]: With dead ends: 68638 [2021-12-06 17:49:29,008 INFO L226 Difference]: Without dead ends: 39327 [2021-12-06 17:49:29,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1094 GetRequests, 1048 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=428, Invalid=1552, Unknown=0, NotChecked=0, Total=1980 [2021-12-06 17:49:29,115 INFO L933 BasicCegarLoop]: 1222 mSDtfsCounter, 6345 mSDsluCounter, 8028 mSDsCounter, 0 mSdLazyCounter, 11341 mSolverCounterSat, 4398 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6557 SdHoareTripleChecker+Valid, 9250 SdHoareTripleChecker+Invalid, 15740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4398 IncrementalHoareTripleChecker+Valid, 11341 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:29,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6557 Valid, 9250 Invalid, 15740 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4398 Valid, 11341 Invalid, 1 Unknown, 0 Unchecked, 22.9s Time] [2021-12-06 17:49:29,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39327 states. [2021-12-06 17:49:31,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39327 to 29396. [2021-12-06 17:49:31,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29396 states, 21469 states have (on average 1.2208766127905353) internal successors, (26211), 21885 states have internal predecessors, (26211), 5855 states have call successors, (5855), 1494 states have call predecessors, (5855), 2071 states have return successors, (9061), 6183 states have call predecessors, (9061), 5854 states have call successors, (9061) [2021-12-06 17:49:31,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29396 states to 29396 states and 41127 transitions. [2021-12-06 17:49:31,720 INFO L78 Accepts]: Start accepts. Automaton has 29396 states and 41127 transitions. Word has length 461 [2021-12-06 17:49:31,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:31,720 INFO L470 AbstractCegarLoop]: Abstraction has 29396 states and 41127 transitions. [2021-12-06 17:49:31,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 22.941176470588236) internal successors, (390), 9 states have internal predecessors, (390), 5 states have call successors, (98), 11 states have call predecessors, (98), 3 states have return successors, (81), 4 states have call predecessors, (81), 5 states have call successors, (81) [2021-12-06 17:49:31,721 INFO L276 IsEmpty]: Start isEmpty. Operand 29396 states and 41127 transitions. [2021-12-06 17:49:31,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2021-12-06 17:49:31,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:31,734 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:49:31,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-06 17:49:31,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:49:31,936 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:31,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:31,937 INFO L85 PathProgramCache]: Analyzing trace with hash 2022100414, now seen corresponding path program 1 times [2021-12-06 17:49:31,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:31,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362708751] [2021-12-06 17:49:31,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:31,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:49:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:49:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:49:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:49:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:49:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:49:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:49:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:49:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:49:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:49:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:49:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:49:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:49:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:49:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:49:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:49:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 17:49:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:49:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:49:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 17:49:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 17:49:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 17:49:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 17:49:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:49:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 17:49:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 17:49:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:49:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:49:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 17:49:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:49:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:49:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:49:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 17:49:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:49:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:49:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:49:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-06 17:49:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:49:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:49:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:49:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-06 17:49:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-12-06 17:49:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:49:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:49:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-12-06 17:49:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-12-06 17:49:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-06 17:49:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2021-12-06 17:49:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-12-06 17:49:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-12-06 17:49:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-12-06 17:49:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-12-06 17:49:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:49:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:49:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:32,972 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 711 trivial. 0 not checked. [2021-12-06 17:49:32,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:32,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362708751] [2021-12-06 17:49:32,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362708751] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:32,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:49:32,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-06 17:49:32,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612661984] [2021-12-06 17:49:32,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:32,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 17:49:32,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:32,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 17:49:32,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:49:32,974 INFO L87 Difference]: Start difference. First operand 29396 states and 41127 transitions. Second operand has 17 states, 17 states have (on average 13.117647058823529) internal successors, (223), 8 states have internal predecessors, (223), 2 states have call successors, (41), 10 states have call predecessors, (41), 3 states have return successors, (40), 3 states have call predecessors, (40), 2 states have call successors, (40) [2021-12-06 17:49:41,020 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 17:49:48,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:48,401 INFO L93 Difference]: Finished difference Result 67929 states and 105645 transitions. [2021-12-06 17:49:48,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 17:49:48,402 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.117647058823529) internal successors, (223), 8 states have internal predecessors, (223), 2 states have call successors, (41), 10 states have call predecessors, (41), 3 states have return successors, (40), 3 states have call predecessors, (40), 2 states have call successors, (40) Word has length 487 [2021-12-06 17:49:48,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:48,579 INFO L225 Difference]: With dead ends: 67929 [2021-12-06 17:49:48,579 INFO L226 Difference]: Without dead ends: 38680 [2021-12-06 17:49:48,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2021-12-06 17:49:48,682 INFO L933 BasicCegarLoop]: 1155 mSDtfsCounter, 1995 mSDsluCounter, 9036 mSDsCounter, 0 mSdLazyCounter, 5720 mSolverCounterSat, 1523 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 10191 SdHoareTripleChecker+Invalid, 7244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1523 IncrementalHoareTripleChecker+Valid, 5720 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:48,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2093 Valid, 10191 Invalid, 7244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1523 Valid, 5720 Invalid, 1 Unknown, 0 Unchecked, 11.9s Time] [2021-12-06 17:49:48,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38680 states. [2021-12-06 17:49:51,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38680 to 29648. [2021-12-06 17:49:51,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29648 states, 21700 states have (on average 1.21852534562212) internal successors, (26442), 22102 states have internal predecessors, (26442), 5855 states have call successors, (5855), 1494 states have call predecessors, (5855), 2092 states have return successors, (9301), 6218 states have call predecessors, (9301), 5854 states have call successors, (9301) [2021-12-06 17:49:51,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29648 states to 29648 states and 41598 transitions. [2021-12-06 17:49:51,307 INFO L78 Accepts]: Start accepts. Automaton has 29648 states and 41598 transitions. Word has length 487 [2021-12-06 17:49:51,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:51,307 INFO L470 AbstractCegarLoop]: Abstraction has 29648 states and 41598 transitions. [2021-12-06 17:49:51,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.117647058823529) internal successors, (223), 8 states have internal predecessors, (223), 2 states have call successors, (41), 10 states have call predecessors, (41), 3 states have return successors, (40), 3 states have call predecessors, (40), 2 states have call successors, (40) [2021-12-06 17:49:51,307 INFO L276 IsEmpty]: Start isEmpty. Operand 29648 states and 41598 transitions. [2021-12-06 17:49:51,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2021-12-06 17:49:51,320 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:51,320 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:49:51,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-06 17:49:51,321 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:51,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:51,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1319550639, now seen corresponding path program 1 times [2021-12-06 17:49:51,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:51,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381676410] [2021-12-06 17:49:51,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:51,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:49:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:49:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:49:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:49:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:49:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:49:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:49:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:49:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:49:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:49:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:49:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:49:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:49:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:49:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:49:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:49:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 17:49:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:49:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:49:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 17:49:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 17:49:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 17:49:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 17:49:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:49:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:51,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 17:49:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:49:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:49:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:49:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:49:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:49:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:49:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:49:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:49:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:49:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:49:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:49:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:49:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:49:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:49:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:49:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:49:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 17:49:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:49:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:49:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:49:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:49:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:49:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:49:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:49:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:49:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:49:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:49:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:49:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:49:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 17:49:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 17:49:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 17:49:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 17:49:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:52,671 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2021-12-06 17:49:52,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:52,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381676410] [2021-12-06 17:49:52,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381676410] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:49:52,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778249059] [2021-12-06 17:49:52,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:52,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:49:52,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:49:52,672 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:49:52,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 17:49:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:53,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 4513 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 17:49:53,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:49:54,016 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-12-06 17:49:54,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:49:54,609 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-06 17:49:54,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778249059] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:49:54,609 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:49:54,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7, 5] total 22 [2021-12-06 17:49:54,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963247877] [2021-12-06 17:49:54,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:49:54,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 17:49:54,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:54,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 17:49:54,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2021-12-06 17:49:54,611 INFO L87 Difference]: Start difference. First operand 29648 states and 41598 transitions. Second operand has 22 states, 22 states have (on average 18.40909090909091) internal successors, (405), 14 states have internal predecessors, (405), 7 states have call successors, (98), 11 states have call predecessors, (98), 6 states have return successors, (83), 4 states have call predecessors, (83), 7 states have call successors, (83) [2021-12-06 17:50:09,844 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 17:50:27,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:50:27,493 INFO L93 Difference]: Finished difference Result 68243 states and 105960 transitions. [2021-12-06 17:50:27,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-06 17:50:27,494 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 18.40909090909091) internal successors, (405), 14 states have internal predecessors, (405), 7 states have call successors, (98), 11 states have call predecessors, (98), 6 states have return successors, (83), 4 states have call predecessors, (83), 7 states have call successors, (83) Word has length 462 [2021-12-06 17:50:27,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:50:27,676 INFO L225 Difference]: With dead ends: 68243 [2021-12-06 17:50:27,676 INFO L226 Difference]: Without dead ends: 38724 [2021-12-06 17:50:27,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1105 GetRequests, 1044 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=694, Invalid=2966, Unknown=0, NotChecked=0, Total=3660 [2021-12-06 17:50:27,770 INFO L933 BasicCegarLoop]: 1216 mSDtfsCounter, 6858 mSDsluCounter, 13138 mSDsCounter, 0 mSdLazyCounter, 17155 mSolverCounterSat, 5000 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7083 SdHoareTripleChecker+Valid, 14354 SdHoareTripleChecker+Invalid, 22156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5000 IncrementalHoareTripleChecker+Valid, 17155 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:50:27,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7083 Valid, 14354 Invalid, 22156 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5000 Valid, 17155 Invalid, 1 Unknown, 0 Unchecked, 28.1s Time] [2021-12-06 17:50:27,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38724 states. [2021-12-06 17:50:30,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38724 to 29726. [2021-12-06 17:50:30,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29726 states, 21766 states have (on average 1.2192410181016264) internal successors, (26538), 22174 states have internal predecessors, (26538), 5855 states have call successors, (5855), 1500 states have call predecessors, (5855), 2104 states have return successors, (9331), 6218 states have call predecessors, (9331), 5854 states have call successors, (9331) [2021-12-06 17:50:30,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29726 states to 29726 states and 41724 transitions. [2021-12-06 17:50:30,468 INFO L78 Accepts]: Start accepts. Automaton has 29726 states and 41724 transitions. Word has length 462 [2021-12-06 17:50:30,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:50:30,468 INFO L470 AbstractCegarLoop]: Abstraction has 29726 states and 41724 transitions. [2021-12-06 17:50:30,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 18.40909090909091) internal successors, (405), 14 states have internal predecessors, (405), 7 states have call successors, (98), 11 states have call predecessors, (98), 6 states have return successors, (83), 4 states have call predecessors, (83), 7 states have call successors, (83) [2021-12-06 17:50:30,469 INFO L276 IsEmpty]: Start isEmpty. Operand 29726 states and 41724 transitions. [2021-12-06 17:50:30,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2021-12-06 17:50:30,482 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:50:30,482 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:50:30,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-06 17:50:30,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-12-06 17:50:30,684 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:50:30,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:50:30,686 INFO L85 PathProgramCache]: Analyzing trace with hash 484523573, now seen corresponding path program 2 times [2021-12-06 17:50:30,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:50:30,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490572909] [2021-12-06 17:50:30,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:50:30,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:50:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:50:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:50:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:50:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:50:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:50:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:50:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:50:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:50:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:50:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:50:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:50:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:50:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:50:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:50:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:50:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:50:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 17:50:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:50:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:50:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 17:50:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 17:50:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 17:50:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 17:50:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:50:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 17:50:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:50:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:50:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:50:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:50:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:50:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:50:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:50:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:50:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:50:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:50:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:50:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:50:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:50:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:50:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:50:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:50:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 17:50:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:31,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:50:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:32,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:50:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:32,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:50:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:32,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:50:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:32,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:50:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:32,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:50:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:32,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:50:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:32,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 17:50:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:32,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:50:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:32,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:50:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:32,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 17:50:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:32,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:50:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:32,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 17:50:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:32,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 17:50:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:32,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 17:50:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:32,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-06 17:50:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:32,456 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2021-12-06 17:50:32,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:50:32,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490572909] [2021-12-06 17:50:32,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490572909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:50:32,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:50:32,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-06 17:50:32,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014067790] [2021-12-06 17:50:32,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:50:32,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 17:50:32,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:50:32,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 17:50:32,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:50:32,458 INFO L87 Difference]: Start difference. First operand 29726 states and 41724 transitions. Second operand has 15 states, 15 states have (on average 16.4) internal successors, (246), 7 states have internal predecessors, (246), 5 states have call successors, (50), 11 states have call predecessors, (50), 4 states have return successors, (49), 4 states have call predecessors, (49), 5 states have call successors, (49) [2021-12-06 17:50:42,997 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 17:50:53,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:50:53,984 INFO L93 Difference]: Finished difference Result 68181 states and 105115 transitions. [2021-12-06 17:50:53,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 17:50:53,985 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 16.4) internal successors, (246), 7 states have internal predecessors, (246), 5 states have call successors, (50), 11 states have call predecessors, (50), 4 states have return successors, (49), 4 states have call predecessors, (49), 5 states have call successors, (49) Word has length 465 [2021-12-06 17:50:53,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:50:54,142 INFO L225 Difference]: With dead ends: 68181 [2021-12-06 17:50:54,142 INFO L226 Difference]: Without dead ends: 38602 [2021-12-06 17:50:54,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=372, Invalid=1110, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 17:50:54,228 INFO L933 BasicCegarLoop]: 1204 mSDtfsCounter, 5715 mSDsluCounter, 7059 mSDsCounter, 0 mSdLazyCounter, 9480 mSolverCounterSat, 3792 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5923 SdHoareTripleChecker+Valid, 8263 SdHoareTripleChecker+Invalid, 13273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3792 IncrementalHoareTripleChecker+Valid, 9480 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:50:54,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5923 Valid, 8263 Invalid, 13273 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3792 Valid, 9480 Invalid, 1 Unknown, 0 Unchecked, 17.5s Time] [2021-12-06 17:50:54,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38602 states. [2021-12-06 17:50:56,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38602 to 29714. [2021-12-06 17:50:56,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29714 states, 21760 states have (on average 1.2190257352941176) internal successors, (26526), 22168 states have internal predecessors, (26526), 5849 states have call successors, (5849), 1500 states have call predecessors, (5849), 2104 states have return successors, (9307), 6212 states have call predecessors, (9307), 5848 states have call successors, (9307) [2021-12-06 17:50:56,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29714 states to 29714 states and 41682 transitions. [2021-12-06 17:50:56,910 INFO L78 Accepts]: Start accepts. Automaton has 29714 states and 41682 transitions. Word has length 465 [2021-12-06 17:50:56,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:50:56,911 INFO L470 AbstractCegarLoop]: Abstraction has 29714 states and 41682 transitions. [2021-12-06 17:50:56,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 16.4) internal successors, (246), 7 states have internal predecessors, (246), 5 states have call successors, (50), 11 states have call predecessors, (50), 4 states have return successors, (49), 4 states have call predecessors, (49), 5 states have call successors, (49) [2021-12-06 17:50:56,911 INFO L276 IsEmpty]: Start isEmpty. Operand 29714 states and 41682 transitions. [2021-12-06 17:50:56,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2021-12-06 17:50:56,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:50:56,925 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:50:56,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-06 17:50:56,925 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:50:56,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:50:56,925 INFO L85 PathProgramCache]: Analyzing trace with hash -816735693, now seen corresponding path program 3 times [2021-12-06 17:50:56,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:50:56,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568666449] [2021-12-06 17:50:56,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:50:56,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:50:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:50:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:50:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:50:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:50:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:50:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:50:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:50:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:50:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:50:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:50:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:50:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:50:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:50:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:50:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:50:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:50:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 17:50:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:50:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:50:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 17:50:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 17:50:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 17:50:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 17:50:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:50:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:57,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 17:50:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:50:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:50:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:50:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:50:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:50:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:50:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:50:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:50:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:50:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:50:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:50:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:50:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:50:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:50:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:50:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:50:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 17:50:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:50:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:50:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:50:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:50:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:50:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:50:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:50:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 17:50:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:50:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:50:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 17:50:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:50:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 17:50:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 17:50:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 17:50:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-06 17:50:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2021-12-06 17:50:58,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:50:58,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568666449] [2021-12-06 17:50:58,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568666449] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:50:58,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:50:58,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 17:50:58,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849815398] [2021-12-06 17:50:58,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:50:58,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 17:50:58,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:50:58,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 17:50:58,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:50:58,999 INFO L87 Difference]: Start difference. First operand 29714 states and 41682 transitions. Second operand has 13 states, 13 states have (on average 18.615384615384617) internal successors, (242), 5 states have internal predecessors, (242), 5 states have call successors, (50), 11 states have call predecessors, (50), 3 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2021-12-06 17:51:07,681 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 17:51:16,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:51:16,787 INFO L93 Difference]: Finished difference Result 75310 states and 118091 transitions. [2021-12-06 17:51:16,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 17:51:16,788 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.615384615384617) internal successors, (242), 5 states have internal predecessors, (242), 5 states have call successors, (50), 11 states have call predecessors, (50), 3 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) Word has length 467 [2021-12-06 17:51:16,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:51:16,975 INFO L225 Difference]: With dead ends: 75310 [2021-12-06 17:51:16,975 INFO L226 Difference]: Without dead ends: 45738 [2021-12-06 17:51:17,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=277, Invalid=715, Unknown=0, NotChecked=0, Total=992 [2021-12-06 17:51:17,065 INFO L933 BasicCegarLoop]: 1215 mSDtfsCounter, 7999 mSDsluCounter, 3503 mSDsCounter, 0 mSdLazyCounter, 5691 mSolverCounterSat, 5407 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8196 SdHoareTripleChecker+Valid, 4718 SdHoareTripleChecker+Invalid, 11099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5407 IncrementalHoareTripleChecker+Valid, 5691 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:51:17,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8196 Valid, 4718 Invalid, 11099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5407 Valid, 5691 Invalid, 1 Unknown, 0 Unchecked, 13.4s Time] [2021-12-06 17:51:17,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45738 states. [2021-12-06 17:51:20,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45738 to 34220. [2021-12-06 17:51:20,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34220 states, 24964 states have (on average 1.2155904502483577) internal successors, (30346), 25391 states have internal predecessors, (30346), 6730 states have call successors, (6730), 1683 states have call predecessors, (6730), 2525 states have return successors, (10912), 7329 states have call predecessors, (10912), 6729 states have call successors, (10912) [2021-12-06 17:51:20,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34220 states to 34220 states and 47988 transitions. [2021-12-06 17:51:20,213 INFO L78 Accepts]: Start accepts. Automaton has 34220 states and 47988 transitions. Word has length 467 [2021-12-06 17:51:20,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:51:20,213 INFO L470 AbstractCegarLoop]: Abstraction has 34220 states and 47988 transitions. [2021-12-06 17:51:20,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.615384615384617) internal successors, (242), 5 states have internal predecessors, (242), 5 states have call successors, (50), 11 states have call predecessors, (50), 3 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2021-12-06 17:51:20,214 INFO L276 IsEmpty]: Start isEmpty. Operand 34220 states and 47988 transitions. [2021-12-06 17:51:20,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2021-12-06 17:51:20,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:51:20,227 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:51:20,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-06 17:51:20,228 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:51:20,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:51:20,228 INFO L85 PathProgramCache]: Analyzing trace with hash -650924593, now seen corresponding path program 1 times [2021-12-06 17:51:20,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:51:20,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456760286] [2021-12-06 17:51:20,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:51:20,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:51:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:51:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:51:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:51:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:51:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:51:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:51:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:51:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:51:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:51:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:51:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:51:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:51:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:51:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:51:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:51:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:51:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 17:51:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:51:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:51:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 17:51:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 17:51:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 17:51:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 17:51:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:51:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 17:51:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 17:51:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:51:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:51:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 17:51:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:51:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:51:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-06 17:51:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:51:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:51:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-06 17:51:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:51:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:51:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:51:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:20,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-06 17:51:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:21,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-12-06 17:51:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:21,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:51:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:21,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:51:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:21,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 17:51:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:21,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:51:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:21,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2021-12-06 17:51:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:21,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-12-06 17:51:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:21,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2021-12-06 17:51:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:21,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-12-06 17:51:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:21,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-12-06 17:51:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:21,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2021-12-06 17:51:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:21,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-12-06 17:51:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:21,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2021-12-06 17:51:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:21,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:51:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:21,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:51:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:21,347 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2021-12-06 17:51:21,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:51:21,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456760286] [2021-12-06 17:51:21,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456760286] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:51:21,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:51:21,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-12-06 17:51:21,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208007469] [2021-12-06 17:51:21,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:51:21,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 17:51:21,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:51:21,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 17:51:21,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2021-12-06 17:51:21,349 INFO L87 Difference]: Start difference. First operand 34220 states and 47988 transitions. Second operand has 22 states, 22 states have (on average 10.590909090909092) internal successors, (233), 11 states have internal predecessors, (233), 2 states have call successors, (43), 10 states have call predecessors, (43), 4 states have return successors, (43), 5 states have call predecessors, (43), 2 states have call successors, (43) [2021-12-06 17:51:31,037 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 17:51:40,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:51:40,563 INFO L93 Difference]: Finished difference Result 79627 states and 124997 transitions. [2021-12-06 17:51:40,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-06 17:51:40,565 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 10.590909090909092) internal successors, (233), 11 states have internal predecessors, (233), 2 states have call successors, (43), 10 states have call predecessors, (43), 4 states have return successors, (43), 5 states have call predecessors, (43), 2 states have call successors, (43) Word has length 486 [2021-12-06 17:51:40,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:51:40,783 INFO L225 Difference]: With dead ends: 79627 [2021-12-06 17:51:40,783 INFO L226 Difference]: Without dead ends: 45438 [2021-12-06 17:51:40,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=268, Invalid=1624, Unknown=0, NotChecked=0, Total=1892 [2021-12-06 17:51:40,896 INFO L933 BasicCegarLoop]: 1163 mSDtfsCounter, 2342 mSDsluCounter, 13518 mSDsCounter, 0 mSdLazyCounter, 7885 mSolverCounterSat, 1881 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2439 SdHoareTripleChecker+Valid, 14681 SdHoareTripleChecker+Invalid, 9767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1881 IncrementalHoareTripleChecker+Valid, 7885 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:51:40,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2439 Valid, 14681 Invalid, 9767 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1881 Valid, 7885 Invalid, 1 Unknown, 0 Unchecked, 14.7s Time] [2021-12-06 17:51:40,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45438 states. [2021-12-06 17:51:44,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45438 to 34324. [2021-12-06 17:51:44,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34324 states, 25054 states have (on average 1.2148159974455177) internal successors, (30436), 25457 states have internal predecessors, (30436), 6730 states have call successors, (6730), 1683 states have call predecessors, (6730), 2539 states have return successors, (10938), 7367 states have call predecessors, (10938), 6729 states have call successors, (10938) [2021-12-06 17:51:44,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34324 states to 34324 states and 48104 transitions. [2021-12-06 17:51:44,278 INFO L78 Accepts]: Start accepts. Automaton has 34324 states and 48104 transitions. Word has length 486 [2021-12-06 17:51:44,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:51:44,278 INFO L470 AbstractCegarLoop]: Abstraction has 34324 states and 48104 transitions. [2021-12-06 17:51:44,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.590909090909092) internal successors, (233), 11 states have internal predecessors, (233), 2 states have call successors, (43), 10 states have call predecessors, (43), 4 states have return successors, (43), 5 states have call predecessors, (43), 2 states have call successors, (43) [2021-12-06 17:51:44,279 INFO L276 IsEmpty]: Start isEmpty. Operand 34324 states and 48104 transitions. [2021-12-06 17:51:44,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2021-12-06 17:51:44,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:51:44,300 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:51:44,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-06 17:51:44,300 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:51:44,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:51:44,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1903679769, now seen corresponding path program 1 times [2021-12-06 17:51:44,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:51:44,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051813388] [2021-12-06 17:51:44,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:51:44,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:51:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:51:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:51:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:51:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:51:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:51:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:51:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:51:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:51:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:51:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:51:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:51:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:51:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:51:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:51:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:51:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:51:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 17:51:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:51:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:51:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 17:51:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 17:51:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 17:51:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 17:51:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:51:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 17:51:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 17:51:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:51:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:51:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 17:51:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:51:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:51:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-06 17:51:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:51:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:51:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-06 17:51:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:51:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:51:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:51:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-06 17:51:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-12-06 17:51:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:51:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:51:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:51:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:51:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 17:51:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-12-06 17:51:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-06 17:51:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-12-06 17:51:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-12-06 17:51:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2021-12-06 17:51:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-12-06 17:51:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-12-06 17:51:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2021-12-06 17:51:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2021-12-06 17:51:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:51:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:51:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:45,257 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2021-12-06 17:51:45,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:51:45,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051813388] [2021-12-06 17:51:45,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051813388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:51:45,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:51:45,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 17:51:45,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267122668] [2021-12-06 17:51:45,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:51:45,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 17:51:45,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:51:45,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 17:51:45,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:51:45,259 INFO L87 Difference]: Start difference. First operand 34324 states and 48104 transitions. Second operand has 14 states, 14 states have (on average 17.5) internal successors, (245), 5 states have internal predecessors, (245), 3 states have call successors, (44), 10 states have call predecessors, (44), 3 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2021-12-06 17:51:51,167 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 17:51:58,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:51:58,700 INFO L93 Difference]: Finished difference Result 78897 states and 123308 transitions. [2021-12-06 17:51:58,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 17:51:58,701 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.5) internal successors, (245), 5 states have internal predecessors, (245), 3 states have call successors, (44), 10 states have call predecessors, (44), 3 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) Word has length 511 [2021-12-06 17:51:58,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:51:58,937 INFO L225 Difference]: With dead ends: 78897 [2021-12-06 17:51:58,937 INFO L226 Difference]: Without dead ends: 44728 [2021-12-06 17:51:59,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2021-12-06 17:51:59,033 INFO L933 BasicCegarLoop]: 1153 mSDtfsCounter, 1577 mSDsluCounter, 5308 mSDsCounter, 0 mSdLazyCounter, 3551 mSolverCounterSat, 1010 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1674 SdHoareTripleChecker+Valid, 6461 SdHoareTripleChecker+Invalid, 4562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1010 IncrementalHoareTripleChecker+Valid, 3551 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:51:59,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1674 Valid, 6461 Invalid, 4562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1010 Valid, 3551 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2021-12-06 17:51:59,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44728 states. [2021-12-06 17:52:02,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44728 to 34324. [2021-12-06 17:52:02,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34324 states, 25054 states have (on average 1.2148159974455177) internal successors, (30436), 25457 states have internal predecessors, (30436), 6730 states have call successors, (6730), 1683 states have call predecessors, (6730), 2539 states have return successors, (10938), 7367 states have call predecessors, (10938), 6729 states have call successors, (10938) [2021-12-06 17:52:02,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34324 states to 34324 states and 48104 transitions. [2021-12-06 17:52:02,186 INFO L78 Accepts]: Start accepts. Automaton has 34324 states and 48104 transitions. Word has length 511 [2021-12-06 17:52:02,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:52:02,186 INFO L470 AbstractCegarLoop]: Abstraction has 34324 states and 48104 transitions. [2021-12-06 17:52:02,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.5) internal successors, (245), 5 states have internal predecessors, (245), 3 states have call successors, (44), 10 states have call predecessors, (44), 3 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2021-12-06 17:52:02,187 INFO L276 IsEmpty]: Start isEmpty. Operand 34324 states and 48104 transitions. [2021-12-06 17:52:02,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2021-12-06 17:52:02,202 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:52:02,203 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:52:02,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-06 17:52:02,203 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:52:02,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:52:02,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1398632592, now seen corresponding path program 1 times [2021-12-06 17:52:02,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:52:02,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014287946] [2021-12-06 17:52:02,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:52:02,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:52:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:02,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:52:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:02,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:52:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:02,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:52:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:02,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:52:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:02,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:52:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:02,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:52:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:02,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:52:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:02,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:52:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:52:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:52:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:52:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:52:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:52:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:52:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:52:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:52:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 17:52:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:52:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:52:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 17:52:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 17:52:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 17:52:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 17:52:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:52:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 17:52:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 17:52:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:52:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:52:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 17:52:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:52:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:52:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-06 17:52:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:52:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:52:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-06 17:52:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:52:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:52:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:52:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-06 17:52:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-12-06 17:52:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:52:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:52:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-06 17:52:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:52:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:52:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:52:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:52:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:52:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:52:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:52:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:52:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:52:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:52:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:52:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:52:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:52:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:52:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2021-12-06 17:52:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:52:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:52:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:04,762 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 16 proven. 40 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2021-12-06 17:52:04,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:52:04,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014287946] [2021-12-06 17:52:04,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014287946] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:52:04,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706493602] [2021-12-06 17:52:04,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:52:04,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:52:04,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:52:04,764 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:52:04,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 17:52:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:06,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 4945 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-06 17:52:06,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:52:07,251 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 19 proven. 75 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2021-12-06 17:52:07,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:52:08,361 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 39 proven. 41 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2021-12-06 17:52:08,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706493602] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:52:08,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:52:08,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10, 9] total 28 [2021-12-06 17:52:08,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840483498] [2021-12-06 17:52:08,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:52:08,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 17:52:08,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:52:08,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 17:52:08,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2021-12-06 17:52:08,365 INFO L87 Difference]: Start difference. First operand 34324 states and 48104 transitions. Second operand has 28 states, 28 states have (on average 14.0) internal successors, (392), 17 states have internal predecessors, (392), 8 states have call successors, (98), 14 states have call predecessors, (98), 10 states have return successors, (85), 10 states have call predecessors, (85), 8 states have call successors, (85) [2021-12-06 17:52:18,235 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 17:53:16,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:53:16,591 INFO L93 Difference]: Finished difference Result 142407 states and 246527 transitions. [2021-12-06 17:53:16,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-12-06 17:53:16,592 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 14.0) internal successors, (392), 17 states have internal predecessors, (392), 8 states have call successors, (98), 14 states have call predecessors, (98), 10 states have return successors, (85), 10 states have call predecessors, (85), 8 states have call successors, (85) Word has length 531 [2021-12-06 17:53:16,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:53:17,220 INFO L225 Difference]: With dead ends: 142407 [2021-12-06 17:53:17,221 INFO L226 Difference]: Without dead ends: 108238 [2021-12-06 17:53:17,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1285 GetRequests, 1190 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2944 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1288, Invalid=8024, Unknown=0, NotChecked=0, Total=9312 [2021-12-06 17:53:17,406 INFO L933 BasicCegarLoop]: 2880 mSDtfsCounter, 19318 mSDsluCounter, 22710 mSDsCounter, 0 mSdLazyCounter, 41658 mSolverCounterSat, 19565 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19604 SdHoareTripleChecker+Valid, 25590 SdHoareTripleChecker+Invalid, 61224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 19565 IncrementalHoareTripleChecker+Valid, 41658 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:53:17,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19604 Valid, 25590 Invalid, 61224 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [19565 Valid, 41658 Invalid, 1 Unknown, 0 Unchecked, 55.6s Time] [2021-12-06 17:53:17,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108238 states. [2021-12-06 17:53:25,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108238 to 81179. [2021-12-06 17:53:25,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81179 states, 58586 states have (on average 1.2163827535588707) internal successors, (71263), 59549 states have internal predecessors, (71263), 16059 states have call successors, (16059), 3330 states have call predecessors, (16059), 6533 states have return successors, (39543), 18666 states have call predecessors, (39543), 16058 states have call successors, (39543) [2021-12-06 17:53:26,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81179 states to 81179 states and 126865 transitions. [2021-12-06 17:53:26,191 INFO L78 Accepts]: Start accepts. Automaton has 81179 states and 126865 transitions. Word has length 531 [2021-12-06 17:53:26,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:53:26,191 INFO L470 AbstractCegarLoop]: Abstraction has 81179 states and 126865 transitions. [2021-12-06 17:53:26,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 14.0) internal successors, (392), 17 states have internal predecessors, (392), 8 states have call successors, (98), 14 states have call predecessors, (98), 10 states have return successors, (85), 10 states have call predecessors, (85), 8 states have call successors, (85) [2021-12-06 17:53:26,192 INFO L276 IsEmpty]: Start isEmpty. Operand 81179 states and 126865 transitions. [2021-12-06 17:53:26,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2021-12-06 17:53:26,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:53:26,209 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:53:26,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-06 17:53:26,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:53:26,411 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:53:26,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:53:26,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1367669026, now seen corresponding path program 2 times [2021-12-06 17:53:26,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:53:26,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503694195] [2021-12-06 17:53:26,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:53:26,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:53:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:27,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:53:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:27,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:53:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:27,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:53:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:27,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:53:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:27,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:53:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:27,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:53:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:27,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:53:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:27,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:53:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:53:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:53:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:53:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:53:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:53:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:53:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:53:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:53:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 17:53:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:53:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:53:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 17:53:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 17:53:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 17:53:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 17:53:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:53:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 17:53:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 17:53:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:53:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:53:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:53:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 17:53:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:53:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:53:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 17:53:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:53:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:53:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-06 17:53:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:53:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:53:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-06 17:53:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-12-06 17:53:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:53:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:53:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-06 17:53:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:53:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:53:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:53:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:53:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:53:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:53:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:53:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:53:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:53:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:53:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:53:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:53:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:53:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:53:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2021-12-06 17:53:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:53:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:53:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:28,762 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-12-06 17:53:28,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:53:28,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503694195] [2021-12-06 17:53:28,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503694195] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:53:28,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233576253] [2021-12-06 17:53:28,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:53:28,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:53:28,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:53:28,763 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:53:28,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 17:53:33,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:53:33,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:53:33,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 4945 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 17:53:33,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:53:34,018 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 102 proven. 3 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2021-12-06 17:53:34,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:53:34,601 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-12-06 17:53:34,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233576253] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:53:34,602 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:53:34,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 6, 6] total 23 [2021-12-06 17:53:34,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127734393] [2021-12-06 17:53:34,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:53:34,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-06 17:53:34,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:53:34,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-06 17:53:34,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-12-06 17:53:34,604 INFO L87 Difference]: Start difference. First operand 81179 states and 126865 transitions. Second operand has 23 states, 23 states have (on average 14.956521739130435) internal successors, (344), 13 states have internal predecessors, (344), 2 states have call successors, (87), 12 states have call predecessors, (87), 5 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2021-12-06 17:53:42,869 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 17:54:00,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:54:00,103 INFO L93 Difference]: Finished difference Result 180166 states and 324101 transitions. [2021-12-06 17:54:00,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 17:54:00,104 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 14.956521739130435) internal successors, (344), 13 states have internal predecessors, (344), 2 states have call successors, (87), 12 states have call predecessors, (87), 5 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) Word has length 531 [2021-12-06 17:54:00,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:54:00,710 INFO L225 Difference]: With dead ends: 180166 [2021-12-06 17:54:00,710 INFO L226 Difference]: Without dead ends: 98810 [2021-12-06 17:54:01,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1211 GetRequests, 1170 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=398, Invalid=1324, Unknown=0, NotChecked=0, Total=1722 [2021-12-06 17:54:01,069 INFO L933 BasicCegarLoop]: 1122 mSDtfsCounter, 3062 mSDsluCounter, 7671 mSDsCounter, 0 mSdLazyCounter, 6607 mSolverCounterSat, 2617 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3180 SdHoareTripleChecker+Valid, 8793 SdHoareTripleChecker+Invalid, 9225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2617 IncrementalHoareTripleChecker+Valid, 6607 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:54:01,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3180 Valid, 8793 Invalid, 9225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2617 Valid, 6607 Invalid, 1 Unknown, 0 Unchecked, 14.9s Time] [2021-12-06 17:54:01,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98810 states. [2021-12-06 17:54:09,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98810 to 81384. [2021-12-06 17:54:09,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81384 states, 58791 states have (on average 1.2156282424180571) internal successors, (71468), 59754 states have internal predecessors, (71468), 16059 states have call successors, (16059), 3330 states have call predecessors, (16059), 6533 states have return successors, (39543), 18666 states have call predecessors, (39543), 16058 states have call successors, (39543) [2021-12-06 17:54:09,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81384 states to 81384 states and 127070 transitions. [2021-12-06 17:54:09,655 INFO L78 Accepts]: Start accepts. Automaton has 81384 states and 127070 transitions. Word has length 531 [2021-12-06 17:54:09,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:54:09,656 INFO L470 AbstractCegarLoop]: Abstraction has 81384 states and 127070 transitions. [2021-12-06 17:54:09,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 14.956521739130435) internal successors, (344), 13 states have internal predecessors, (344), 2 states have call successors, (87), 12 states have call predecessors, (87), 5 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2021-12-06 17:54:09,656 INFO L276 IsEmpty]: Start isEmpty. Operand 81384 states and 127070 transitions. [2021-12-06 17:54:09,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2021-12-06 17:54:09,672 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:54:09,673 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:54:09,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-06 17:54:09,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:54:09,875 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:54:09,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:54:09,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1383998862, now seen corresponding path program 3 times [2021-12-06 17:54:09,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:54:09,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802827280] [2021-12-06 17:54:09,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:54:09,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:54:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:10,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:54:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:10,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:54:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:10,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:54:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:10,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:54:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:10,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:54:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:11,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 17:54:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:11,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 17:54:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:11,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:54:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:11,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:54:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:11,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:54:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:11,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:54:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:11,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:54:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:11,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:54:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:11,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:54:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:11,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 17:54:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:11,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:54:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:11,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 17:54:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:11,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:54:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:11,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:54:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:11,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 17:54:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:11,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 17:54:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:11,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 17:54:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:11,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 17:54:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:11,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:54:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:11,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 17:54:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 17:54:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:54:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:54:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:54:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-06 17:54:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:54:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:54:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-06 17:54:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:54:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:54:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:54:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-06 17:54:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:54:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:54:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:54:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-06 17:54:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-12-06 17:54:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:54:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:54:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-12-06 17:54:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:54:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:54:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:54:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 17:54:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 17:54:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 17:54:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:54:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:54:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:54:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:54:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:54:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 17:54:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 17:54:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 17:54:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2021-12-06 17:54:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:54:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:54:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:54:12,365 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 29 proven. 21 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2021-12-06 17:54:12,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:54:12,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802827280] [2021-12-06 17:54:12,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802827280] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:54:12,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020972722] [2021-12-06 17:54:12,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 17:54:12,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:54:12,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:54:12,366 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:54:12,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089e6f4e-97cb-4824-aa18-9476a1b52da0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process