./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 8f21bcf4203715ff2cf8f1fa847025b0ca29b6eb32fc30a64baf7cbf3cb00ebc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 02:03:41,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 02:03:41,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 02:03:41,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 02:03:41,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 02:03:41,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 02:03:41,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 02:03:41,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 02:03:41,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 02:03:41,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 02:03:41,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 02:03:41,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 02:03:41,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 02:03:41,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 02:03:41,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 02:03:41,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 02:03:41,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 02:03:41,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 02:03:41,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 02:03:41,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 02:03:41,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 02:03:41,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 02:03:41,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 02:03:41,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 02:03:41,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 02:03:41,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 02:03:41,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 02:03:41,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 02:03:41,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 02:03:41,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 02:03:41,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 02:03:41,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 02:03:41,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 02:03:41,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 02:03:41,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 02:03:41,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 02:03:41,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 02:03:41,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 02:03:41,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 02:03:41,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 02:03:41,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 02:03:41,411 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 02:03:41,442 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 02:03:41,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 02:03:41,443 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 02:03:41,443 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 02:03:41,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 02:03:41,444 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 02:03:41,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 02:03:41,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 02:03:41,445 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 02:03:41,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 02:03:41,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 02:03:41,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 02:03:41,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 02:03:41,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 02:03:41,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 02:03:41,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 02:03:41,446 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 02:03:41,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 02:03:41,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 02:03:41,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 02:03:41,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 02:03:41,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 02:03:41,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 02:03:41,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 02:03:41,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 02:03:41,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 02:03:41,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 02:03:41,447 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 02:03:41,448 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 02:03:41,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 02:03:41,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 02:03:41,448 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f21bcf4203715ff2cf8f1fa847025b0ca29b6eb32fc30a64baf7cbf3cb00ebc [2021-11-17 02:03:41,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 02:03:41,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 02:03:41,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 02:03:41,669 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 02:03:41,670 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 02:03:41,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-17 02:03:41,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ed680f65/d56797b2ab4c483d8336beaf2b5444d8/FLAG0f7093e07 [2021-11-17 02:03:42,288 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 02:03:42,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-17 02:03:42,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ed680f65/d56797b2ab4c483d8336beaf2b5444d8/FLAG0f7093e07 [2021-11-17 02:03:42,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ed680f65/d56797b2ab4c483d8336beaf2b5444d8 [2021-11-17 02:03:42,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 02:03:42,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 02:03:42,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 02:03:42,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 02:03:42,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 02:03:42,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 02:03:42" (1/1) ... [2021-11-17 02:03:42,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4f4b62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:03:42, skipping insertion in model container [2021-11-17 02:03:42,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 02:03:42" (1/1) ... [2021-11-17 02:03:42,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 02:03:42,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 02:03:43,316 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2021-11-17 02:03:43,368 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 02:03:43,391 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 02:03:43,607 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2021-11-17 02:03:43,618 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 02:03:43,663 INFO L208 MainTranslator]: Completed translation [2021-11-17 02:03:43,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:03:43 WrapperNode [2021-11-17 02:03:43,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 02:03:43,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 02:03:43,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 02:03:43,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 02:03:43,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:03:43" (1/1) ... [2021-11-17 02:03:43,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:03:43" (1/1) ... [2021-11-17 02:03:43,790 INFO L137 Inliner]: procedures = 153, calls = 606, calls flagged for inlining = 71, calls inlined = 71, statements flattened = 1828 [2021-11-17 02:03:43,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 02:03:43,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 02:03:43,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 02:03:43,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 02:03:43,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:03:43" (1/1) ... [2021-11-17 02:03:43,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:03:43" (1/1) ... [2021-11-17 02:03:43,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:03:43" (1/1) ... [2021-11-17 02:03:43,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:03:43" (1/1) ... [2021-11-17 02:03:43,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:03:43" (1/1) ... [2021-11-17 02:03:43,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:03:43" (1/1) ... [2021-11-17 02:03:43,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:03:43" (1/1) ... [2021-11-17 02:03:43,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 02:03:43,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 02:03:43,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 02:03:43,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 02:03:43,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:03:43" (1/1) ... [2021-11-17 02:03:43,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 02:03:43,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:03:43,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-17 02:03:43,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_11 [2021-11-17 02:03:43,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_11 [2021-11-17 02:03:43,960 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-17 02:03:43,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-17 02:03:43,960 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_ioctl [2021-11-17 02:03:43,961 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_ioctl [2021-11-17 02:03:43,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-17 02:03:43,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2021-11-17 02:03:43,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2021-11-17 02:03:43,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2021-11-17 02:03:43,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2021-11-17 02:03:43,962 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_close [2021-11-17 02:03:43,962 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_close [2021-11-17 02:03:43,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-17 02:03:43,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-17 02:03:43,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 02:03:43,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 02:03:43,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 02:03:43,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-17 02:03:43,963 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-17 02:03:43,963 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-11-17 02:03:43,963 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-11-17 02:03:43,964 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-17 02:03:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-17 02:03:43,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-17 02:03:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-17 02:03:43,964 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-17 02:03:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-17 02:03:43,964 INFO L130 BoogieDeclarations]: Found specification of procedure usb_driver_release_interface [2021-11-17 02:03:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_driver_release_interface [2021-11-17 02:03:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-17 02:03:43,965 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-17 02:03:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-17 02:03:43,965 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-17 02:03:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-17 02:03:43,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-17 02:03:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 02:03:43,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 02:03:43,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-11-17 02:03:43,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-11-17 02:03:43,966 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-17 02:03:43,966 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_disconnect [2021-11-17 02:03:43,967 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_disconnect [2021-11-17 02:03:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure usbpn_set_mtu [2021-11-17 02:03:43,967 INFO L138 BoogieDeclarations]: Found implementation of procedure usbpn_set_mtu [2021-11-17 02:03:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2021-11-17 02:03:43,967 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2021-11-17 02:03:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 02:03:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-17 02:03:43,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-17 02:03:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 02:03:43,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 02:03:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure rx_submit [2021-11-17 02:03:43,968 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_submit [2021-11-17 02:03:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-17 02:03:43,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-17 02:03:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-17 02:03:43,970 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-17 02:03:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-17 02:03:43,970 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-17 02:03:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 02:03:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-17 02:03:43,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-17 02:03:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-17 02:03:43,972 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-17 02:03:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 02:03:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-17 02:03:43,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-17 02:03:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 02:03:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 02:03:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-17 02:03:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 02:03:43,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 02:03:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 02:03:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-17 02:03:43,973 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-17 02:03:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-17 02:03:43,974 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-17 02:03:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-17 02:03:43,974 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-17 02:03:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 02:03:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 02:03:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-17 02:03:43,974 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-17 02:03:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-17 02:03:43,975 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-17 02:03:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-17 02:03:43,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-17 02:03:43,975 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-17 02:03:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-17 02:03:43,976 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-17 02:03:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-11-17 02:03:43,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-11-17 02:03:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 02:03:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-17 02:03:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 02:03:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 02:03:43,978 INFO L130 BoogieDeclarations]: Found specification of procedure rx_complete [2021-11-17 02:03:43,978 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_complete [2021-11-17 02:03:44,368 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 02:03:44,370 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 02:03:44,885 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 02:03:46,247 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 02:03:46,262 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 02:03:46,263 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-17 02:03:46,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 02:03:46 BoogieIcfgContainer [2021-11-17 02:03:46,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 02:03:46,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 02:03:46,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 02:03:46,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 02:03:46,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 02:03:42" (1/3) ... [2021-11-17 02:03:46,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a25d970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 02:03:46, skipping insertion in model container [2021-11-17 02:03:46,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:03:43" (2/3) ... [2021-11-17 02:03:46,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a25d970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 02:03:46, skipping insertion in model container [2021-11-17 02:03:46,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 02:03:46" (3/3) ... [2021-11-17 02:03:46,275 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-17 02:03:46,279 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 02:03:46,279 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 02:03:46,322 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 02:03:46,331 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-17 02:03:46,333 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 02:03:46,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 598 states, 444 states have (on average 1.3513513513513513) internal successors, (600), 463 states have internal predecessors, (600), 113 states have call successors, (113), 40 states have call predecessors, (113), 39 states have return successors, (107), 105 states have call predecessors, (107), 107 states have call successors, (107) [2021-11-17 02:03:46,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-17 02:03:46,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:03:46,372 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-17 02:03:46,373 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:03:46,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:03:46,378 INFO L85 PathProgramCache]: Analyzing trace with hash 148447644, now seen corresponding path program 1 times [2021-11-17 02:03:46,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:03:46,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565000844] [2021-11-17 02:03:46,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:03:46,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:03:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:46,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:03:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:46,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:03:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:46,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:03:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:46,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:03:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:46,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:03:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:46,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:03:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:46,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:03:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:46,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:03:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:46,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:03:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:46,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:03:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:46,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:03:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:46,897 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-17 02:03:46,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:03:46,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565000844] [2021-11-17 02:03:46,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565000844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:03:46,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:03:46,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 02:03:46,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730618144] [2021-11-17 02:03:46,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:03:46,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 02:03:46,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:03:46,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 02:03:46,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 02:03:46,921 INFO L87 Difference]: Start difference. First operand has 598 states, 444 states have (on average 1.3513513513513513) internal successors, (600), 463 states have internal predecessors, (600), 113 states have call successors, (113), 40 states have call predecessors, (113), 39 states have return successors, (107), 105 states have call predecessors, (107), 107 states have call successors, (107) Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-17 02:03:50,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:03:51,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:03:51,790 INFO L93 Difference]: Finished difference Result 1280 states and 1801 transitions. [2021-11-17 02:03:51,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 02:03:51,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 78 [2021-11-17 02:03:51,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:03:51,804 INFO L225 Difference]: With dead ends: 1280 [2021-11-17 02:03:51,804 INFO L226 Difference]: Without dead ends: 673 [2021-11-17 02:03:51,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-17 02:03:51,811 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 436 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-17 02:03:51,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 1798 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-17 02:03:51,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-11-17 02:03:51,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 584. [2021-11-17 02:03:51,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 438 states have (on average 1.3333333333333333) internal successors, (584), 449 states have internal predecessors, (584), 107 states have call successors, (107), 39 states have call predecessors, (107), 38 states have return successors, (102), 100 states have call predecessors, (102), 102 states have call successors, (102) [2021-11-17 02:03:51,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 793 transitions. [2021-11-17 02:03:51,875 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 793 transitions. Word has length 78 [2021-11-17 02:03:51,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:03:51,875 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 793 transitions. [2021-11-17 02:03:51,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-17 02:03:51,876 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 793 transitions. [2021-11-17 02:03:51,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-17 02:03:51,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:03:51,878 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-17 02:03:51,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 02:03:51,879 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:03:51,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:03:51,879 INFO L85 PathProgramCache]: Analyzing trace with hash 354669602, now seen corresponding path program 1 times [2021-11-17 02:03:51,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:03:51,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48054042] [2021-11-17 02:03:51,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:03:51,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:03:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:51,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:03:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:51,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:03:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:51,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:03:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:51,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:03:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:51,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:03:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:52,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:03:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:52,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:03:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:52,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:03:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:52,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:03:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:52,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:03:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:52,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:03:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:52,061 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-17 02:03:52,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:03:52,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48054042] [2021-11-17 02:03:52,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48054042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:03:52,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:03:52,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 02:03:52,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123910749] [2021-11-17 02:03:52,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:03:52,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 02:03:52,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:03:52,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 02:03:52,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 02:03:52,068 INFO L87 Difference]: Start difference. First operand 584 states and 793 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-17 02:03:56,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:03:56,775 INFO L93 Difference]: Finished difference Result 1867 states and 2577 transitions. [2021-11-17 02:03:56,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 02:03:56,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 5 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 78 [2021-11-17 02:03:56,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:03:56,781 INFO L225 Difference]: With dead ends: 1867 [2021-11-17 02:03:56,782 INFO L226 Difference]: Without dead ends: 1301 [2021-11-17 02:03:56,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-17 02:03:56,787 INFO L933 BasicCegarLoop]: 854 mSDtfsCounter, 1513 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-17 02:03:56,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1598 Valid, 2487 Invalid, 1755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-17 02:03:56,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2021-11-17 02:03:56,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1127. [2021-11-17 02:03:56,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 848 states have (on average 1.3337264150943395) internal successors, (1131), 866 states have internal predecessors, (1131), 203 states have call successors, (203), 76 states have call predecessors, (203), 75 states have return successors, (198), 194 states have call predecessors, (198), 198 states have call successors, (198) [2021-11-17 02:03:56,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1532 transitions. [2021-11-17 02:03:56,857 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1532 transitions. Word has length 78 [2021-11-17 02:03:56,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:03:56,857 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 1532 transitions. [2021-11-17 02:03:56,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-17 02:03:56,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1532 transitions. [2021-11-17 02:03:56,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-17 02:03:56,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:03:56,866 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-17 02:03:56,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-17 02:03:56,867 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:03:56,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:03:56,867 INFO L85 PathProgramCache]: Analyzing trace with hash 2694347, now seen corresponding path program 1 times [2021-11-17 02:03:56,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:03:56,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076653736] [2021-11-17 02:03:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:03:56,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:03:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:56,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:03:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:56,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:03:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:56,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:03:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:56,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:03:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:56,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:03:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:03:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:56,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:03:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:57,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:03:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:57,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:03:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:57,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:03:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:57,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:03:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:57,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:03:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:57,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:03:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:57,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:03:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:03:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-17 02:03:57,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:03:57,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076653736] [2021-11-17 02:03:57,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076653736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:03:57,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:03:57,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 02:03:57,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096259222] [2021-11-17 02:03:57,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:03:57,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 02:03:57,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:03:57,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 02:03:57,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 02:03:57,046 INFO L87 Difference]: Start difference. First operand 1127 states and 1532 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-17 02:04:00,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:04:00,899 INFO L93 Difference]: Finished difference Result 1327 states and 1836 transitions. [2021-11-17 02:04:00,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 02:04:00,899 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 98 [2021-11-17 02:04:00,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:04:00,904 INFO L225 Difference]: With dead ends: 1327 [2021-11-17 02:04:00,905 INFO L226 Difference]: Without dead ends: 1314 [2021-11-17 02:04:00,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-17 02:04:00,906 INFO L933 BasicCegarLoop]: 776 mSDtfsCounter, 1154 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-17 02:04:00,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 1784 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-17 02:04:00,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2021-11-17 02:04:00,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1127. [2021-11-17 02:04:00,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 848 states have (on average 1.3325471698113207) internal successors, (1130), 866 states have internal predecessors, (1130), 203 states have call successors, (203), 76 states have call predecessors, (203), 75 states have return successors, (198), 194 states have call predecessors, (198), 198 states have call successors, (198) [2021-11-17 02:04:00,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1531 transitions. [2021-11-17 02:04:00,936 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1531 transitions. Word has length 98 [2021-11-17 02:04:00,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:04:00,936 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 1531 transitions. [2021-11-17 02:04:00,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-17 02:04:00,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1531 transitions. [2021-11-17 02:04:00,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-17 02:04:00,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:04:00,938 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-17 02:04:00,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-17 02:04:00,938 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:04:00,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:04:00,939 INFO L85 PathProgramCache]: Analyzing trace with hash 59952649, now seen corresponding path program 1 times [2021-11-17 02:04:00,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:04:00,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71918728] [2021-11-17 02:04:00,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:04:00,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:04:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:01,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:04:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:01,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:01,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:01,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:04:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:01,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:01,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:01,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:04:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:01,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:01,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:01,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:04:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:01,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:04:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:01,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:04:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:01,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:01,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-17 02:04:01,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:04:01,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71918728] [2021-11-17 02:04:01,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71918728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:04:01,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:04:01,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 02:04:01,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719958856] [2021-11-17 02:04:01,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:04:01,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 02:04:01,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:04:01,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 02:04:01,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 02:04:01,168 INFO L87 Difference]: Start difference. First operand 1127 states and 1531 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 02:04:05,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:04:05,618 INFO L93 Difference]: Finished difference Result 3688 states and 5192 transitions. [2021-11-17 02:04:05,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 02:04:05,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 98 [2021-11-17 02:04:05,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:04:05,630 INFO L225 Difference]: With dead ends: 3688 [2021-11-17 02:04:05,630 INFO L226 Difference]: Without dead ends: 2579 [2021-11-17 02:04:05,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-17 02:04:05,635 INFO L933 BasicCegarLoop]: 1082 mSDtfsCounter, 1630 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 2638 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-17 02:04:05,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1703 Valid, 2638 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [612 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-17 02:04:05,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2021-11-17 02:04:05,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2305. [2021-11-17 02:04:05,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 1735 states have (on average 1.3302593659942363) internal successors, (2308), 1777 states have internal predecessors, (2308), 406 states have call successors, (406), 150 states have call predecessors, (406), 163 states have return successors, (463), 399 states have call predecessors, (463), 401 states have call successors, (463) [2021-11-17 02:04:05,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3177 transitions. [2021-11-17 02:04:05,704 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3177 transitions. Word has length 98 [2021-11-17 02:04:05,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:04:05,704 INFO L470 AbstractCegarLoop]: Abstraction has 2305 states and 3177 transitions. [2021-11-17 02:04:05,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 02:04:05,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3177 transitions. [2021-11-17 02:04:05,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-17 02:04:05,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:04:05,711 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-17 02:04:05,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-17 02:04:05,711 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:04:05,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:04:05,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1858300209, now seen corresponding path program 1 times [2021-11-17 02:04:05,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:04:05,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906490530] [2021-11-17 02:04:05,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:04:05,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:04:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:05,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:04:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:05,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:05,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:05,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:04:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:05,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:05,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:05,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:04:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:05,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:05,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:05,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:04:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:05,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:04:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:05,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:04:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:05,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:05,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:05,882 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-17 02:04:05,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:04:05,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906490530] [2021-11-17 02:04:05,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906490530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:04:05,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:04:05,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 02:04:05,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44459829] [2021-11-17 02:04:05,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:04:05,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 02:04:05,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:04:05,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 02:04:05,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 02:04:05,884 INFO L87 Difference]: Start difference. First operand 2305 states and 3177 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 02:04:09,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:04:09,394 INFO L93 Difference]: Finished difference Result 2571 states and 3606 transitions. [2021-11-17 02:04:09,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 02:04:09,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2021-11-17 02:04:09,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:04:09,404 INFO L225 Difference]: With dead ends: 2571 [2021-11-17 02:04:09,404 INFO L226 Difference]: Without dead ends: 2568 [2021-11-17 02:04:09,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-17 02:04:09,406 INFO L933 BasicCegarLoop]: 757 mSDtfsCounter, 1127 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-17 02:04:09,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1194 Valid, 1720 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-17 02:04:09,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2021-11-17 02:04:09,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2304. [2021-11-17 02:04:09,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2304 states, 1735 states have (on average 1.3296829971181556) internal successors, (2307), 1776 states have internal predecessors, (2307), 405 states have call successors, (405), 150 states have call predecessors, (405), 163 states have return successors, (463), 399 states have call predecessors, (463), 401 states have call successors, (463) [2021-11-17 02:04:09,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 3175 transitions. [2021-11-17 02:04:09,481 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 3175 transitions. Word has length 99 [2021-11-17 02:04:09,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:04:09,481 INFO L470 AbstractCegarLoop]: Abstraction has 2304 states and 3175 transitions. [2021-11-17 02:04:09,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 02:04:09,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 3175 transitions. [2021-11-17 02:04:09,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-17 02:04:09,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:04:09,483 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-17 02:04:09,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-17 02:04:09,484 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:04:09,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:04:09,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1772504588, now seen corresponding path program 1 times [2021-11-17 02:04:09,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:04:09,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939236340] [2021-11-17 02:04:09,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:04:09,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:04:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:09,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:04:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:09,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:09,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:09,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:04:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:09,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:09,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:09,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:04:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:09,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:09,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:09,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:04:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:09,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:04:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:09,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:04:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:09,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:09,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:09,657 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-17 02:04:09,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:04:09,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939236340] [2021-11-17 02:04:09,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939236340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:04:09,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:04:09,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 02:04:09,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015809012] [2021-11-17 02:04:09,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:04:09,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 02:04:09,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:04:09,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 02:04:09,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 02:04:09,659 INFO L87 Difference]: Start difference. First operand 2304 states and 3175 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 02:04:11,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:04:12,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:04:12,380 INFO L93 Difference]: Finished difference Result 2570 states and 3604 transitions. [2021-11-17 02:04:12,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 02:04:12,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 100 [2021-11-17 02:04:12,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:04:12,392 INFO L225 Difference]: With dead ends: 2570 [2021-11-17 02:04:12,392 INFO L226 Difference]: Without dead ends: 2567 [2021-11-17 02:04:12,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-17 02:04:12,395 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 1420 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-17 02:04:12,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 1179 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-17 02:04:12,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2021-11-17 02:04:12,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2303. [2021-11-17 02:04:12,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 1735 states have (on average 1.329106628242075) internal successors, (2306), 1775 states have internal predecessors, (2306), 404 states have call successors, (404), 150 states have call predecessors, (404), 163 states have return successors, (463), 399 states have call predecessors, (463), 401 states have call successors, (463) [2021-11-17 02:04:12,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 3173 transitions. [2021-11-17 02:04:12,471 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 3173 transitions. Word has length 100 [2021-11-17 02:04:12,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:04:12,471 INFO L470 AbstractCegarLoop]: Abstraction has 2303 states and 3173 transitions. [2021-11-17 02:04:12,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 02:04:12,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 3173 transitions. [2021-11-17 02:04:12,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-17 02:04:12,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:04:12,473 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-17 02:04:12,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-17 02:04:12,474 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:04:12,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:04:12,474 INFO L85 PathProgramCache]: Analyzing trace with hash -887154796, now seen corresponding path program 1 times [2021-11-17 02:04:12,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:04:12,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184051290] [2021-11-17 02:04:12,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:04:12,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:04:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:12,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:04:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:12,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:12,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:12,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:04:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:12,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:12,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:12,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:04:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:12,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:12,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:12,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:04:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:12,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:04:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:12,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:04:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:12,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:12,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-17 02:04:12,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:04:12,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184051290] [2021-11-17 02:04:12,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184051290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:04:12,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:04:12,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 02:04:12,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035991691] [2021-11-17 02:04:12,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:04:12,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 02:04:12,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:04:12,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 02:04:12,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 02:04:12,607 INFO L87 Difference]: Start difference. First operand 2303 states and 3173 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 02:04:14,450 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:04:16,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:04:16,761 INFO L93 Difference]: Finished difference Result 2569 states and 3602 transitions. [2021-11-17 02:04:16,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 02:04:16,761 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2021-11-17 02:04:16,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:04:16,770 INFO L225 Difference]: With dead ends: 2569 [2021-11-17 02:04:16,770 INFO L226 Difference]: Without dead ends: 2566 [2021-11-17 02:04:16,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-17 02:04:16,772 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 1119 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-17 02:04:16,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1185 Valid, 1714 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-17 02:04:16,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2021-11-17 02:04:16,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2302. [2021-11-17 02:04:16,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 1735 states have (on average 1.3285302593659942) internal successors, (2305), 1774 states have internal predecessors, (2305), 403 states have call successors, (403), 150 states have call predecessors, (403), 163 states have return successors, (463), 399 states have call predecessors, (463), 401 states have call successors, (463) [2021-11-17 02:04:16,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3171 transitions. [2021-11-17 02:04:16,839 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3171 transitions. Word has length 101 [2021-11-17 02:04:16,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:04:16,839 INFO L470 AbstractCegarLoop]: Abstraction has 2302 states and 3171 transitions. [2021-11-17 02:04:16,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 02:04:16,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3171 transitions. [2021-11-17 02:04:16,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-17 02:04:16,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:04:16,841 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-17 02:04:16,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-17 02:04:16,841 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:04:16,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:04:16,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1732212209, now seen corresponding path program 1 times [2021-11-17 02:04:16,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:04:16,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267862459] [2021-11-17 02:04:16,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:04:16,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:04:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:16,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:04:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:16,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:16,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:16,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:04:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:16,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:16,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:16,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:04:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:16,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:16,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:16,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:04:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:16,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:04:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:16,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:04:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:16,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:16,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:16,974 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-17 02:04:16,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:04:16,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267862459] [2021-11-17 02:04:16,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267862459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:04:16,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:04:16,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 02:04:16,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091971711] [2021-11-17 02:04:16,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:04:16,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 02:04:16,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:04:16,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 02:04:16,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 02:04:16,976 INFO L87 Difference]: Start difference. First operand 2302 states and 3171 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 02:04:18,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:04:18,914 INFO L93 Difference]: Finished difference Result 2568 states and 3600 transitions. [2021-11-17 02:04:18,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 02:04:18,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2021-11-17 02:04:18,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:04:18,924 INFO L225 Difference]: With dead ends: 2568 [2021-11-17 02:04:18,924 INFO L226 Difference]: Without dead ends: 2556 [2021-11-17 02:04:18,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-17 02:04:18,925 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 1412 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-17 02:04:18,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1478 Valid, 1179 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-17 02:04:18,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-11-17 02:04:18,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2292. [2021-11-17 02:04:18,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 1726 states have (on average 1.3285052143684821) internal successors, (2293), 1764 states have internal predecessors, (2293), 402 states have call successors, (402), 150 states have call predecessors, (402), 163 states have return successors, (463), 399 states have call predecessors, (463), 401 states have call successors, (463) [2021-11-17 02:04:18,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3158 transitions. [2021-11-17 02:04:18,999 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3158 transitions. Word has length 102 [2021-11-17 02:04:18,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:04:18,999 INFO L470 AbstractCegarLoop]: Abstraction has 2292 states and 3158 transitions. [2021-11-17 02:04:18,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 02:04:19,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3158 transitions. [2021-11-17 02:04:19,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-17 02:04:19,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:04:19,004 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:04:19,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-17 02:04:19,004 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:04:19,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:04:19,005 INFO L85 PathProgramCache]: Analyzing trace with hash 871426742, now seen corresponding path program 1 times [2021-11-17 02:04:19,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:04:19,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276371904] [2021-11-17 02:04:19,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:04:19,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:04:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:19,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:04:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:19,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:19,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:19,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:04:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:19,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:19,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:19,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:04:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:19,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:19,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:19,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:04:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:19,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:04:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:19,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-17 02:04:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:19,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 02:04:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:19,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:19,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:04:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:19,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 02:04:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:19,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:19,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-17 02:04:19,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:04:19,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276371904] [2021-11-17 02:04:19,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276371904] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:04:19,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:04:19,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-17 02:04:19,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823933946] [2021-11-17 02:04:19,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:04:19,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 02:04:19,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:04:19,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 02:04:19,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-17 02:04:19,167 INFO L87 Difference]: Start difference. First operand 2292 states and 3158 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-17 02:04:21,909 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:04:23,930 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:04:28,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:04:30,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:04:30,253 INFO L93 Difference]: Finished difference Result 7214 states and 10130 transitions. [2021-11-17 02:04:30,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 02:04:30,254 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 139 [2021-11-17 02:04:30,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:04:30,273 INFO L225 Difference]: With dead ends: 7214 [2021-11-17 02:04:30,274 INFO L226 Difference]: Without dead ends: 4940 [2021-11-17 02:04:30,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-17 02:04:30,280 INFO L933 BasicCegarLoop]: 1139 mSDtfsCounter, 1382 mSDsluCounter, 3009 mSDsCounter, 0 mSdLazyCounter, 1968 mSolverCounterSat, 739 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 4148 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 739 IncrementalHoareTripleChecker+Valid, 1968 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2021-11-17 02:04:30,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1467 Valid, 4148 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [739 Valid, 1968 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2021-11-17 02:04:30,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4940 states. [2021-11-17 02:04:30,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4940 to 4402. [2021-11-17 02:04:30,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4402 states, 3292 states have (on average 1.3210814094775212) internal successors, (4349), 3398 states have internal predecessors, (4349), 760 states have call successors, (760), 288 states have call predecessors, (760), 349 states have return successors, (1051), 759 states have call predecessors, (1051), 759 states have call successors, (1051) [2021-11-17 02:04:30,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 6160 transitions. [2021-11-17 02:04:30,460 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 6160 transitions. Word has length 139 [2021-11-17 02:04:30,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:04:30,461 INFO L470 AbstractCegarLoop]: Abstraction has 4402 states and 6160 transitions. [2021-11-17 02:04:30,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-17 02:04:30,461 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 6160 transitions. [2021-11-17 02:04:30,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-17 02:04:30,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:04:30,467 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:04:30,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-17 02:04:30,467 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:04:30,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:04:30,467 INFO L85 PathProgramCache]: Analyzing trace with hash 507122438, now seen corresponding path program 1 times [2021-11-17 02:04:30,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:04:30,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153674278] [2021-11-17 02:04:30,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:04:30,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:04:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:04:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:04:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:04:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:04:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:04:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-17 02:04:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 02:04:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 02:04:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 02:04:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 02:04:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-17 02:04:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 02:04:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-17 02:04:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-17 02:04:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 02:04:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-17 02:04:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 02:04:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 02:04:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 02:04:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-11-17 02:04:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-11-17 02:04:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:04:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-11-17 02:04:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:30,688 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-17 02:04:30,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:04:30,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153674278] [2021-11-17 02:04:30,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153674278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:04:30,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:04:30,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 02:04:30,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844560548] [2021-11-17 02:04:30,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:04:30,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 02:04:30,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:04:30,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 02:04:30,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-17 02:04:30,690 INFO L87 Difference]: Start difference. First operand 4402 states and 6160 transitions. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 02:04:33,532 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:04:34,593 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:04:37,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:04:37,166 INFO L93 Difference]: Finished difference Result 13360 states and 18868 transitions. [2021-11-17 02:04:37,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-17 02:04:37,166 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 254 [2021-11-17 02:04:37,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:04:37,203 INFO L225 Difference]: With dead ends: 13360 [2021-11-17 02:04:37,203 INFO L226 Difference]: Without dead ends: 8986 [2021-11-17 02:04:37,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2021-11-17 02:04:37,216 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 2648 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 1917 mSolverCounterSat, 1461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2723 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 3378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1461 IncrementalHoareTripleChecker+Valid, 1917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-17 02:04:37,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2723 Valid, 2374 Invalid, 3378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1461 Valid, 1917 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-11-17 02:04:37,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8986 states. [2021-11-17 02:04:37,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8986 to 7976. [2021-11-17 02:04:37,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7976 states, 5976 states have (on average 1.3211178045515395) internal successors, (7895), 6172 states have internal predecessors, (7895), 1344 states have call successors, (1344), 532 states have call predecessors, (1344), 655 states have return successors, (1907), 1355 states have call predecessors, (1907), 1343 states have call successors, (1907) [2021-11-17 02:04:37,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7976 states to 7976 states and 11146 transitions. [2021-11-17 02:04:37,534 INFO L78 Accepts]: Start accepts. Automaton has 7976 states and 11146 transitions. Word has length 254 [2021-11-17 02:04:37,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:04:37,535 INFO L470 AbstractCegarLoop]: Abstraction has 7976 states and 11146 transitions. [2021-11-17 02:04:37,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 02:04:37,535 INFO L276 IsEmpty]: Start isEmpty. Operand 7976 states and 11146 transitions. [2021-11-17 02:04:37,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-11-17 02:04:37,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:04:37,541 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2021-11-17 02:04:37,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-17 02:04:37,541 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:04:37,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:04:37,541 INFO L85 PathProgramCache]: Analyzing trace with hash 234758432, now seen corresponding path program 1 times [2021-11-17 02:04:37,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:04:37,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981539247] [2021-11-17 02:04:37,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:04:37,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:04:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:04:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:04:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:04:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:04:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:04:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:04:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:04:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-17 02:04:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 02:04:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 02:04:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-17 02:04:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-17 02:04:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 02:04:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-17 02:04:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-17 02:04:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-17 02:04:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-11-17 02:04:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-17 02:04:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-17 02:04:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-11-17 02:04:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-17 02:04:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-11-17 02:04:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:04:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-17 02:04:37,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:04:37,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981539247] [2021-11-17 02:04:37,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981539247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:04:37,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:04:37,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 02:04:37,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326349813] [2021-11-17 02:04:37,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:04:37,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 02:04:37,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:04:37,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 02:04:37,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-17 02:04:37,813 INFO L87 Difference]: Start difference. First operand 7976 states and 11146 transitions. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 02:04:42,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:04:45,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:04:45,838 INFO L93 Difference]: Finished difference Result 18218 states and 26137 transitions. [2021-11-17 02:04:45,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-17 02:04:45,846 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 263 [2021-11-17 02:04:45,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:04:45,881 INFO L225 Difference]: With dead ends: 18218 [2021-11-17 02:04:45,881 INFO L226 Difference]: Without dead ends: 10270 [2021-11-17 02:04:45,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-17 02:04:45,900 INFO L933 BasicCegarLoop]: 892 mSDtfsCounter, 1175 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 2103 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 2949 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 2103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-17 02:04:45,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1244 Valid, 2949 Invalid, 2750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 2103 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2021-11-17 02:04:45,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10270 states. [2021-11-17 02:04:46,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10270 to 8056. [2021-11-17 02:04:46,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8056 states, 6056 states have (on average 1.3248018494055482) internal successors, (8023), 6252 states have internal predecessors, (8023), 1344 states have call successors, (1344), 532 states have call predecessors, (1344), 655 states have return successors, (1907), 1355 states have call predecessors, (1907), 1343 states have call successors, (1907) [2021-11-17 02:04:46,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8056 states to 8056 states and 11274 transitions. [2021-11-17 02:04:46,232 INFO L78 Accepts]: Start accepts. Automaton has 8056 states and 11274 transitions. Word has length 263 [2021-11-17 02:04:46,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:04:46,232 INFO L470 AbstractCegarLoop]: Abstraction has 8056 states and 11274 transitions. [2021-11-17 02:04:46,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 02:04:46,233 INFO L276 IsEmpty]: Start isEmpty. Operand 8056 states and 11274 transitions. [2021-11-17 02:04:46,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-17 02:04:46,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:04:46,243 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2021-11-17 02:04:46,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-17 02:04:46,244 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:04:46,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:04:46,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1207162728, now seen corresponding path program 1 times [2021-11-17 02:04:46,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:04:46,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579411482] [2021-11-17 02:04:46,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:04:46,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:04:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:04:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:04:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:04:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:04:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:04:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:04:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:04:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 02:04:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 02:04:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 02:04:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 02:04:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 02:04:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 02:04:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 02:04:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:04:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 02:04:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 02:04:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-17 02:04:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:04:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-17 02:04:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-17 02:04:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2021-11-17 02:04:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:04:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:46,539 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-17 02:04:46,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:04:46,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579411482] [2021-11-17 02:04:46,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579411482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:04:46,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:04:46,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-17 02:04:46,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196651026] [2021-11-17 02:04:46,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:04:46,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 02:04:46,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:04:46,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 02:04:46,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-17 02:04:46,541 INFO L87 Difference]: Start difference. First operand 8056 states and 11274 transitions. Second operand has 10 states, 10 states have (on average 14.1) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 02:04:52,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:04:52,708 INFO L93 Difference]: Finished difference Result 27286 states and 39018 transitions. [2021-11-17 02:04:52,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-17 02:04:52,709 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 270 [2021-11-17 02:04:52,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:04:52,794 INFO L225 Difference]: With dead ends: 27286 [2021-11-17 02:04:52,794 INFO L226 Difference]: Without dead ends: 19258 [2021-11-17 02:04:52,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-11-17 02:04:52,816 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 3494 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 2744 mSolverCounterSat, 1807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3590 SdHoareTripleChecker+Valid, 2844 SdHoareTripleChecker+Invalid, 4551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1807 IncrementalHoareTripleChecker+Valid, 2744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-17 02:04:52,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3590 Valid, 2844 Invalid, 4551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1807 Valid, 2744 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-11-17 02:04:52,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19258 states. [2021-11-17 02:04:53,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19258 to 16040. [2021-11-17 02:04:53,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16040 states, 12052 states have (on average 1.3253401924991703) internal successors, (15973), 12452 states have internal predecessors, (15973), 2680 states have call successors, (2680), 1060 states have call predecessors, (2680), 1307 states have return successors, (3807), 2695 states have call predecessors, (3807), 2679 states have call successors, (3807) [2021-11-17 02:04:53,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16040 states to 16040 states and 22460 transitions. [2021-11-17 02:04:53,513 INFO L78 Accepts]: Start accepts. Automaton has 16040 states and 22460 transitions. Word has length 270 [2021-11-17 02:04:53,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:04:53,514 INFO L470 AbstractCegarLoop]: Abstraction has 16040 states and 22460 transitions. [2021-11-17 02:04:53,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 02:04:53,514 INFO L276 IsEmpty]: Start isEmpty. Operand 16040 states and 22460 transitions. [2021-11-17 02:04:53,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-17 02:04:53,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:04:53,523 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2021-11-17 02:04:53,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-17 02:04:53,523 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:04:53,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:04:53,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1701019158, now seen corresponding path program 1 times [2021-11-17 02:04:53,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:04:53,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357427186] [2021-11-17 02:04:53,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:04:53,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:04:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:04:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:04:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:04:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:04:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:04:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:04:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:04:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 02:04:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 02:04:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 02:04:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 02:04:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 02:04:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 02:04:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 02:04:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:04:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 02:04:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 02:04:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-17 02:04:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:04:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:04:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-17 02:04:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-17 02:04:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2021-11-17 02:04:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:04:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:04:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:04:53,839 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-17 02:04:53,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:04:53,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357427186] [2021-11-17 02:04:53,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357427186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:04:53,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:04:53,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 02:04:53,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864268787] [2021-11-17 02:04:53,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:04:53,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 02:04:53,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:04:53,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 02:04:53,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-17 02:04:53,841 INFO L87 Difference]: Start difference. First operand 16040 states and 22460 transitions. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-17 02:04:59,166 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:05:00,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:05:00,989 INFO L93 Difference]: Finished difference Result 35760 states and 50446 transitions. [2021-11-17 02:05:00,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-17 02:05:00,989 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 270 [2021-11-17 02:05:00,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:05:01,050 INFO L225 Difference]: With dead ends: 35760 [2021-11-17 02:05:01,051 INFO L226 Difference]: Without dead ends: 19748 [2021-11-17 02:05:01,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2021-11-17 02:05:01,079 INFO L933 BasicCegarLoop]: 893 mSDtfsCounter, 1430 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 1968 mSolverCounterSat, 715 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 2684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 1968 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-17 02:05:01,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1484 Valid, 2379 Invalid, 2684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 1968 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-17 02:05:01,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19748 states. [2021-11-17 02:05:01,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19748 to 17632. [2021-11-17 02:05:01,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17632 states, 13392 states have (on average 1.3278823178016725) internal successors, (17783), 13804 states have internal predecessors, (17783), 2828 states have call successors, (2828), 1164 states have call predecessors, (2828), 1411 states have return successors, (3963), 2831 states have call predecessors, (3963), 2827 states have call successors, (3963) [2021-11-17 02:05:01,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17632 states to 17632 states and 24574 transitions. [2021-11-17 02:05:01,956 INFO L78 Accepts]: Start accepts. Automaton has 17632 states and 24574 transitions. Word has length 270 [2021-11-17 02:05:01,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:05:01,957 INFO L470 AbstractCegarLoop]: Abstraction has 17632 states and 24574 transitions. [2021-11-17 02:05:01,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-17 02:05:01,957 INFO L276 IsEmpty]: Start isEmpty. Operand 17632 states and 24574 transitions. [2021-11-17 02:05:01,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-17 02:05:01,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:05:01,967 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:05:01,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-17 02:05:01,967 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:05:01,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:05:01,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1669474714, now seen corresponding path program 1 times [2021-11-17 02:05:01,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:05:01,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744538160] [2021-11-17 02:05:01,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:05:01,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:05:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:05:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:05:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:05:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:05:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:05:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:05:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:05:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 02:05:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 02:05:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 02:05:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 02:05:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 02:05:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 02:05:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 02:05:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:05:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 02:05:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 02:05:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-17 02:05:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:05:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-17 02:05:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-11-17 02:05:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-17 02:05:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:05:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:02,189 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-11-17 02:05:02,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:05:02,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744538160] [2021-11-17 02:05:02,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744538160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:05:02,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:05:02,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 02:05:02,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914605785] [2021-11-17 02:05:02,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:05:02,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 02:05:02,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:05:02,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 02:05:02,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-17 02:05:02,191 INFO L87 Difference]: Start difference. First operand 17632 states and 24574 transitions. Second operand has 9 states, 9 states have (on average 17.22222222222222) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 02:05:08,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:05:08,083 INFO L93 Difference]: Finished difference Result 45704 states and 64170 transitions. [2021-11-17 02:05:08,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-17 02:05:08,083 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.22222222222222) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 284 [2021-11-17 02:05:08,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:05:08,182 INFO L225 Difference]: With dead ends: 45704 [2021-11-17 02:05:08,182 INFO L226 Difference]: Without dead ends: 28100 [2021-11-17 02:05:08,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-11-17 02:05:08,229 INFO L933 BasicCegarLoop]: 1002 mSDtfsCounter, 2955 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 1667 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3022 SdHoareTripleChecker+Valid, 2304 SdHoareTripleChecker+Invalid, 3442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1667 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-17 02:05:08,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3022 Valid, 2304 Invalid, 3442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1667 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-17 02:05:08,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28100 states. [2021-11-17 02:05:09,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28100 to 24812. [2021-11-17 02:05:09,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24812 states, 18920 states have (on average 1.325845665961945) internal successors, (25085), 19484 states have internal predecessors, (25085), 3864 states have call successors, (3864), 1692 states have call predecessors, (3864), 2027 states have return successors, (5523), 3859 states have call predecessors, (5523), 3863 states have call successors, (5523) [2021-11-17 02:05:09,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24812 states to 24812 states and 34472 transitions. [2021-11-17 02:05:09,409 INFO L78 Accepts]: Start accepts. Automaton has 24812 states and 34472 transitions. Word has length 284 [2021-11-17 02:05:09,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:05:09,410 INFO L470 AbstractCegarLoop]: Abstraction has 24812 states and 34472 transitions. [2021-11-17 02:05:09,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.22222222222222) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 02:05:09,410 INFO L276 IsEmpty]: Start isEmpty. Operand 24812 states and 34472 transitions. [2021-11-17 02:05:09,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-17 02:05:09,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:05:09,424 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 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] [2021-11-17 02:05:09,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-17 02:05:09,424 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:05:09,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:05:09,425 INFO L85 PathProgramCache]: Analyzing trace with hash -575185571, now seen corresponding path program 1 times [2021-11-17 02:05:09,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:05:09,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286268485] [2021-11-17 02:05:09,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:05:09,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:05:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:05:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:05:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:05:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:05:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:05:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:05:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:05:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 02:05:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 02:05:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 02:05:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 02:05:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 02:05:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 02:05:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 02:05:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:05:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 02:05:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 02:05:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-17 02:05:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:05:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-17 02:05:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-17 02:05:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-11-17 02:05:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-11-17 02:05:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-11-17 02:05:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:05:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:09,769 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 22 proven. 22 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-11-17 02:05:09,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:05:09,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286268485] [2021-11-17 02:05:09,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286268485] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:05:09,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029073373] [2021-11-17 02:05:09,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:05:09,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:05:09,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:05:09,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 02:05:09,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-17 02:05:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:10,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 2206 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-17 02:05:10,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:05:10,821 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-17 02:05:10,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 02:05:10,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029073373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:05:10,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 02:05:10,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 12 [2021-11-17 02:05:10,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093281063] [2021-11-17 02:05:10,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:05:10,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 02:05:10,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:05:10,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 02:05:10,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-17 02:05:10,823 INFO L87 Difference]: Start difference. First operand 24812 states and 34472 transitions. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 4 states have call successors, (31), 4 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-17 02:05:14,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:05:14,572 INFO L93 Difference]: Finished difference Result 99163 states and 137787 transitions. [2021-11-17 02:05:14,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 02:05:14,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 4 states have call successors, (31), 4 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 307 [2021-11-17 02:05:14,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:05:14,997 INFO L225 Difference]: With dead ends: 99163 [2021-11-17 02:05:14,998 INFO L226 Difference]: Without dead ends: 99155 [2021-11-17 02:05:15,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-17 02:05:15,051 INFO L933 BasicCegarLoop]: 1462 mSDtfsCounter, 2527 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2527 SdHoareTripleChecker+Valid, 3600 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-17 02:05:15,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2527 Valid, 3600 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-17 02:05:15,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99155 states. [2021-11-17 02:05:18,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99155 to 86708. [2021-11-17 02:05:18,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86708 states, 66116 states have (on average 1.3259271583277876) internal successors, (87665), 68120 states have internal predecessors, (87665), 13504 states have call successors, (13504), 5912 states have call predecessors, (13504), 7087 states have return successors, (19313), 13459 states have call predecessors, (19313), 13503 states have call successors, (19313) [2021-11-17 02:05:18,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86708 states to 86708 states and 120482 transitions. [2021-11-17 02:05:18,761 INFO L78 Accepts]: Start accepts. Automaton has 86708 states and 120482 transitions. Word has length 307 [2021-11-17 02:05:18,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:05:18,762 INFO L470 AbstractCegarLoop]: Abstraction has 86708 states and 120482 transitions. [2021-11-17 02:05:18,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 4 states have call successors, (31), 4 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-17 02:05:18,762 INFO L276 IsEmpty]: Start isEmpty. Operand 86708 states and 120482 transitions. [2021-11-17 02:05:18,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2021-11-17 02:05:18,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:05:18,817 INFO L514 BasicCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:05:18,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-17 02:05:19,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-17 02:05:19,031 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:05:19,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:05:19,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1549136553, now seen corresponding path program 1 times [2021-11-17 02:05:19,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:05:19,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397862203] [2021-11-17 02:05:19,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:05:19,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:05:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:05:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:05:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:05:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:05:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:05:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:05:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-17 02:05:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-17 02:05:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 02:05:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 02:05:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 02:05:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 02:05:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-17 02:05:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-11-17 02:05:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 02:05:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-17 02:05:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 02:05:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-17 02:05:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-17 02:05:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-17 02:05:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-11-17 02:05:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-11-17 02:05:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-11-17 02:05:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-11-17 02:05:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-11-17 02:05:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:05:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:19,373 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2021-11-17 02:05:19,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:05:19,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397862203] [2021-11-17 02:05:19,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397862203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:05:19,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:05:19,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-17 02:05:19,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70507185] [2021-11-17 02:05:19,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:05:19,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 02:05:19,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:05:19,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 02:05:19,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-17 02:05:19,375 INFO L87 Difference]: Start difference. First operand 86708 states and 120482 transitions. Second operand has 10 states, 10 states have (on average 16.5) internal successors, (165), 3 states have internal predecessors, (165), 3 states have call successors, (30), 9 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-17 02:05:22,337 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:05:29,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:05:29,798 INFO L93 Difference]: Finished difference Result 133409 states and 185915 transitions. [2021-11-17 02:05:29,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-17 02:05:29,798 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 3 states have internal predecessors, (165), 3 states have call successors, (30), 9 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 321 [2021-11-17 02:05:29,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:05:29,959 INFO L225 Difference]: With dead ends: 133409 [2021-11-17 02:05:29,960 INFO L226 Difference]: Without dead ends: 46729 [2021-11-17 02:05:30,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-11-17 02:05:30,265 INFO L933 BasicCegarLoop]: 1228 mSDtfsCounter, 2226 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 2414 mSolverCounterSat, 1370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2315 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 3784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1370 IncrementalHoareTripleChecker+Valid, 2414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-17 02:05:30,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2315 Valid, 2706 Invalid, 3784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1370 Valid, 2414 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2021-11-17 02:05:30,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46729 states. [2021-11-17 02:05:31,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46729 to 26614. [2021-11-17 02:05:31,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26614 states, 20513 states have (on average 1.3247696582654902) internal successors, (27175), 21073 states have internal predecessors, (27175), 3980 states have call successors, (3980), 1781 states have call predecessors, (3980), 2120 states have return successors, (5631), 3987 states have call predecessors, (5631), 3979 states have call successors, (5631) [2021-11-17 02:05:31,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26614 states to 26614 states and 36786 transitions. [2021-11-17 02:05:31,734 INFO L78 Accepts]: Start accepts. Automaton has 26614 states and 36786 transitions. Word has length 321 [2021-11-17 02:05:31,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:05:31,734 INFO L470 AbstractCegarLoop]: Abstraction has 26614 states and 36786 transitions. [2021-11-17 02:05:31,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 3 states have internal predecessors, (165), 3 states have call successors, (30), 9 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-17 02:05:31,735 INFO L276 IsEmpty]: Start isEmpty. Operand 26614 states and 36786 transitions. [2021-11-17 02:05:31,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-11-17 02:05:31,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:05:31,756 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:05:31,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-17 02:05:31,756 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:05:31,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:05:31,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2025296956, now seen corresponding path program 1 times [2021-11-17 02:05:31,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:05:31,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650648904] [2021-11-17 02:05:31,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:05:31,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:05:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:05:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:05:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:05:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:05:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:05:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:05:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:05:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 02:05:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 02:05:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 02:05:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 02:05:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 02:05:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 02:05:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 02:05:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:31,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:05:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:32,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 02:05:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:32,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 02:05:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:32,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-17 02:05:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:32,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:05:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:32,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:32,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:32,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-17 02:05:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:32,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-17 02:05:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:32,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-11-17 02:05:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:32,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-11-17 02:05:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:32,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-11-17 02:05:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:32,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:32,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:05:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:32,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-11-17 02:05:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:32,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:32,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:32,080 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-17 02:05:32,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:05:32,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650648904] [2021-11-17 02:05:32,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650648904] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:05:32,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:05:32,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 02:05:32,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091286888] [2021-11-17 02:05:32,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:05:32,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 02:05:32,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:05:32,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 02:05:32,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-17 02:05:32,083 INFO L87 Difference]: Start difference. First operand 26614 states and 36786 transitions. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (30), 8 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-17 02:05:38,317 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:05:39,588 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:05:42,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:05:42,923 INFO L93 Difference]: Finished difference Result 56370 states and 78399 transitions. [2021-11-17 02:05:42,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-17 02:05:42,924 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (30), 8 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 327 [2021-11-17 02:05:42,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:05:43,108 INFO L225 Difference]: With dead ends: 56370 [2021-11-17 02:05:43,108 INFO L226 Difference]: Without dead ends: 26621 [2021-11-17 02:05:43,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-11-17 02:05:43,153 INFO L933 BasicCegarLoop]: 1319 mSDtfsCounter, 1773 mSDsluCounter, 2082 mSDsCounter, 0 mSdLazyCounter, 3634 mSolverCounterSat, 1047 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1842 SdHoareTripleChecker+Valid, 3401 SdHoareTripleChecker+Invalid, 4681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1047 IncrementalHoareTripleChecker+Valid, 3634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-17 02:05:43,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1842 Valid, 3401 Invalid, 4681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1047 Valid, 3634 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2021-11-17 02:05:43,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26621 states. [2021-11-17 02:05:44,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26621 to 23828. [2021-11-17 02:05:44,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23828 states, 18362 states have (on average 1.3202810151399629) internal successors, (24243), 18860 states have internal predecessors, (24243), 3575 states have call successors, (3575), 1593 states have call predecessors, (3575), 1890 states have return successors, (5027), 3575 states have call predecessors, (5027), 3574 states have call successors, (5027) [2021-11-17 02:05:44,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23828 states to 23828 states and 32845 transitions. [2021-11-17 02:05:44,171 INFO L78 Accepts]: Start accepts. Automaton has 23828 states and 32845 transitions. Word has length 327 [2021-11-17 02:05:44,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:05:44,172 INFO L470 AbstractCegarLoop]: Abstraction has 23828 states and 32845 transitions. [2021-11-17 02:05:44,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (30), 8 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-17 02:05:44,172 INFO L276 IsEmpty]: Start isEmpty. Operand 23828 states and 32845 transitions. [2021-11-17 02:05:44,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-11-17 02:05:44,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:05:44,188 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 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] [2021-11-17 02:05:44,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-17 02:05:44,188 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:05:44,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:05:44,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1153702214, now seen corresponding path program 1 times [2021-11-17 02:05:44,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:05:44,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120328734] [2021-11-17 02:05:44,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:05:44,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:05:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:05:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:05:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:05:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:05:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:05:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:05:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:05:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 02:05:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 02:05:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 02:05:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 02:05:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 02:05:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 02:05:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 02:05:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:05:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 02:05:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 02:05:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-17 02:05:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:05:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-17 02:05:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-17 02:05:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-11-17 02:05:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-11-17 02:05:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-11-17 02:05:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:05:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-11-17 02:05:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:44,407 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-17 02:05:44,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:05:44,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120328734] [2021-11-17 02:05:44,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120328734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:05:44,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:05:44,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 02:05:44,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460316608] [2021-11-17 02:05:44,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:05:44,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 02:05:44,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:05:44,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 02:05:44,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-17 02:05:44,410 INFO L87 Difference]: Start difference. First operand 23828 states and 32845 transitions. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (30), 8 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-17 02:05:48,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:05:48,257 INFO L93 Difference]: Finished difference Result 35407 states and 49016 transitions. [2021-11-17 02:05:48,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-17 02:05:48,258 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (30), 8 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 327 [2021-11-17 02:05:48,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:05:48,292 INFO L225 Difference]: With dead ends: 35407 [2021-11-17 02:05:48,292 INFO L226 Difference]: Without dead ends: 11624 [2021-11-17 02:05:48,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-17 02:05:48,328 INFO L933 BasicCegarLoop]: 710 mSDtfsCounter, 1358 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 804 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 804 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-17 02:05:48,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1391 Valid, 1704 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [804 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-17 02:05:48,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11624 states. [2021-11-17 02:05:48,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11624 to 10423. [2021-11-17 02:05:48,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10423 states, 8033 states have (on average 1.3215486119756006) internal successors, (10616), 8251 states have internal predecessors, (10616), 1568 states have call successors, (1568), 694 states have call predecessors, (1568), 821 states have return successors, (2194), 1564 states have call predecessors, (2194), 1567 states have call successors, (2194) [2021-11-17 02:05:48,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10423 states to 10423 states and 14378 transitions. [2021-11-17 02:05:48,840 INFO L78 Accepts]: Start accepts. Automaton has 10423 states and 14378 transitions. Word has length 327 [2021-11-17 02:05:48,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:05:48,840 INFO L470 AbstractCegarLoop]: Abstraction has 10423 states and 14378 transitions. [2021-11-17 02:05:48,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (30), 8 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-17 02:05:48,840 INFO L276 IsEmpty]: Start isEmpty. Operand 10423 states and 14378 transitions. [2021-11-17 02:05:48,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-11-17 02:05:48,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:05:48,848 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:05:48,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-17 02:05:48,849 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:05:48,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:05:48,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1859480282, now seen corresponding path program 1 times [2021-11-17 02:05:48,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:05:48,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228300907] [2021-11-17 02:05:48,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:05:48,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:05:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:48,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:05:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:48,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:48,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:48,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:05:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:48,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:48,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:48,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:05:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:48,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:48,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:48,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:05:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:48,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:05:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:48,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:05:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:05:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 02:05:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 02:05:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 02:05:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 02:05:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 02:05:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 02:05:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 02:05:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:05:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 02:05:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 02:05:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-17 02:05:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:05:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-17 02:05:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-17 02:05:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-11-17 02:05:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-11-17 02:05:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-11-17 02:05:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:05:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-11-17 02:05:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:49,103 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2021-11-17 02:05:49,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:05:49,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228300907] [2021-11-17 02:05:49,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228300907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:05:49,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:05:49,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-17 02:05:49,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587649096] [2021-11-17 02:05:49,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:05:49,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 02:05:49,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:05:49,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 02:05:49,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-17 02:05:49,105 INFO L87 Difference]: Start difference. First operand 10423 states and 14378 transitions. Second operand has 10 states, 10 states have (on average 17.8) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (30), 9 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-17 02:05:54,264 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:05:56,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:05:59,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:05:59,329 INFO L93 Difference]: Finished difference Result 24276 states and 33854 transitions. [2021-11-17 02:05:59,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-17 02:05:59,330 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (30), 9 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 335 [2021-11-17 02:05:59,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:05:59,364 INFO L225 Difference]: With dead ends: 24276 [2021-11-17 02:05:59,364 INFO L226 Difference]: Without dead ends: 13922 [2021-11-17 02:05:59,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2021-11-17 02:05:59,380 INFO L933 BasicCegarLoop]: 1162 mSDtfsCounter, 2233 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 2651 mSolverCounterSat, 1412 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2300 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 4064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1412 IncrementalHoareTripleChecker+Valid, 2651 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-17 02:05:59,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2300 Valid, 2587 Invalid, 4064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1412 Valid, 2651 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2021-11-17 02:05:59,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13922 states. [2021-11-17 02:05:59,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13922 to 12493. [2021-11-17 02:05:59,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12493 states, 9578 states have (on average 1.3129045729797453) internal successors, (12575), 9859 states have internal predecessors, (12575), 1895 states have call successors, (1895), 850 states have call predecessors, (1895), 1019 states have return successors, (2812), 1900 states have call predecessors, (2812), 1894 states have call successors, (2812) [2021-11-17 02:05:59,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12493 states to 12493 states and 17282 transitions. [2021-11-17 02:05:59,845 INFO L78 Accepts]: Start accepts. Automaton has 12493 states and 17282 transitions. Word has length 335 [2021-11-17 02:05:59,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:05:59,845 INFO L470 AbstractCegarLoop]: Abstraction has 12493 states and 17282 transitions. [2021-11-17 02:05:59,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (30), 9 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-17 02:05:59,846 INFO L276 IsEmpty]: Start isEmpty. Operand 12493 states and 17282 transitions. [2021-11-17 02:05:59,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-11-17 02:05:59,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:05:59,858 INFO L514 BasicCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:05:59,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-17 02:05:59,858 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:05:59,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:05:59,859 INFO L85 PathProgramCache]: Analyzing trace with hash -463508477, now seen corresponding path program 1 times [2021-11-17 02:05:59,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:05:59,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261859677] [2021-11-17 02:05:59,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:05:59,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:05:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:59,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:05:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:59,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:59,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:59,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:05:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:59,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:59,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:59,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:05:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:59,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:59,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:59,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:05:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:59,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:05:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:59,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:05:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:59,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:05:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:59,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:05:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:05:59,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:05:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 02:06:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 02:06:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 02:06:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 02:06:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 02:06:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 02:06:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 02:06:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:06:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 02:06:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 02:06:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-17 02:06:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:06:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-17 02:06:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-17 02:06:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-11-17 02:06:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-11-17 02:06:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:06:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-11-17 02:06:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 02:06:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-17 02:06:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-11-17 02:06:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-11-17 02:06:00,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:06:00,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261859677] [2021-11-17 02:06:00,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261859677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:06:00,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:06:00,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-17 02:06:00,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236192045] [2021-11-17 02:06:00,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:06:00,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-17 02:06:00,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:06:00,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-17 02:06:00,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-17 02:06:00,216 INFO L87 Difference]: Start difference. First operand 12493 states and 17282 transitions. Second operand has 16 states, 15 states have (on average 12.666666666666666) internal successors, (190), 6 states have internal predecessors, (190), 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) [2021-11-17 02:06:06,129 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:06:07,739 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:06:11,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:06:11,868 INFO L93 Difference]: Finished difference Result 26529 states and 37022 transitions. [2021-11-17 02:06:11,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-17 02:06:11,869 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 12.666666666666666) internal successors, (190), 6 states have internal predecessors, (190), 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 356 [2021-11-17 02:06:11,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:06:11,928 INFO L225 Difference]: With dead ends: 26529 [2021-11-17 02:06:11,928 INFO L226 Difference]: Without dead ends: 14105 [2021-11-17 02:06:11,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=235, Invalid=635, Unknown=0, NotChecked=0, Total=870 [2021-11-17 02:06:11,956 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 1630 mSDsluCounter, 3429 mSDsCounter, 0 mSdLazyCounter, 4612 mSolverCounterSat, 962 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1664 SdHoareTripleChecker+Valid, 4135 SdHoareTripleChecker+Invalid, 5574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 962 IncrementalHoareTripleChecker+Valid, 4612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2021-11-17 02:06:11,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1664 Valid, 4135 Invalid, 5574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [962 Valid, 4612 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2021-11-17 02:06:11,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14105 states. [2021-11-17 02:06:12,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14105 to 12502. [2021-11-17 02:06:12,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12502 states, 9581 states have (on average 1.3109278780920572) internal successors, (12560), 9862 states have internal predecessors, (12560), 1910 states have call successors, (1910), 850 states have call predecessors, (1910), 1010 states have return successors, (2773), 1906 states have call predecessors, (2773), 1909 states have call successors, (2773) [2021-11-17 02:06:12,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12502 states to 12502 states and 17243 transitions. [2021-11-17 02:06:12,556 INFO L78 Accepts]: Start accepts. Automaton has 12502 states and 17243 transitions. Word has length 356 [2021-11-17 02:06:12,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:06:12,556 INFO L470 AbstractCegarLoop]: Abstraction has 12502 states and 17243 transitions. [2021-11-17 02:06:12,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 12.666666666666666) internal successors, (190), 6 states have internal predecessors, (190), 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) [2021-11-17 02:06:12,556 INFO L276 IsEmpty]: Start isEmpty. Operand 12502 states and 17243 transitions. [2021-11-17 02:06:12,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2021-11-17 02:06:12,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:06:12,570 INFO L514 BasicCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:06:12,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-17 02:06:12,571 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:06:12,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:06:12,571 INFO L85 PathProgramCache]: Analyzing trace with hash -971119431, now seen corresponding path program 1 times [2021-11-17 02:06:12,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:06:12,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825934621] [2021-11-17 02:06:12,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:06:12,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:06:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:06:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:06:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:06:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:06:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:06:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:06:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 02:06:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 02:06:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 02:06:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 02:06:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 02:06:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 02:06:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 02:06:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:06:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 02:06:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 02:06:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-17 02:06:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:06:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-17 02:06:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-17 02:06:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-11-17 02:06:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-11-17 02:06:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:06:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-11-17 02:06:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:06:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 02:06:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-11-17 02:06:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:12,924 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-11-17 02:06:12,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:06:12,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825934621] [2021-11-17 02:06:12,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825934621] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:06:12,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990771545] [2021-11-17 02:06:12,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:06:12,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:06:12,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:06:12,926 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 02:06:12,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-17 02:06:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:13,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 2430 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-17 02:06:13,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:06:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-17 02:06:13,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 02:06:13,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990771545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:06:13,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 02:06:13,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2021-11-17 02:06:13,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114079369] [2021-11-17 02:06:13,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:06:13,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 02:06:13,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:06:13,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 02:06:13,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-17 02:06:13,913 INFO L87 Difference]: Start difference. First operand 12502 states and 17243 transitions. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-17 02:06:15,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:06:15,281 INFO L93 Difference]: Finished difference Result 28129 states and 39279 transitions. [2021-11-17 02:06:15,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 02:06:15,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 357 [2021-11-17 02:06:15,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:06:15,335 INFO L225 Difference]: With dead ends: 28129 [2021-11-17 02:06:15,335 INFO L226 Difference]: Without dead ends: 15696 [2021-11-17 02:06:15,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-17 02:06:15,362 INFO L933 BasicCegarLoop]: 985 mSDtfsCounter, 973 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-17 02:06:15,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [974 Valid, 2529 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-17 02:06:15,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15696 states. [2021-11-17 02:06:15,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15696 to 12526. [2021-11-17 02:06:15,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12526 states, 9605 states have (on average 1.3101509630400834) internal successors, (12584), 9886 states have internal predecessors, (12584), 1910 states have call successors, (1910), 850 states have call predecessors, (1910), 1010 states have return successors, (2773), 1906 states have call predecessors, (2773), 1909 states have call successors, (2773) [2021-11-17 02:06:16,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12526 states to 12526 states and 17267 transitions. [2021-11-17 02:06:16,016 INFO L78 Accepts]: Start accepts. Automaton has 12526 states and 17267 transitions. Word has length 357 [2021-11-17 02:06:16,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:06:16,016 INFO L470 AbstractCegarLoop]: Abstraction has 12526 states and 17267 transitions. [2021-11-17 02:06:16,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-17 02:06:16,016 INFO L276 IsEmpty]: Start isEmpty. Operand 12526 states and 17267 transitions. [2021-11-17 02:06:16,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-11-17 02:06:16,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:06:16,033 INFO L514 BasicCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:06:16,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-17 02:06:16,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-17 02:06:16,254 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:06:16,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:06:16,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1311137554, now seen corresponding path program 1 times [2021-11-17 02:06:16,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:06:16,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875711253] [2021-11-17 02:06:16,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:06:16,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:06:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:06:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:06:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:06:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:06:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:06:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:06:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 02:06:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 02:06:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 02:06:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 02:06:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 02:06:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-17 02:06:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 02:06:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:06:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 02:06:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 02:06:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-17 02:06:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:06:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:16,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-17 02:06:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-17 02:06:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-11-17 02:06:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-11-17 02:06:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:06:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-11-17 02:06:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:06:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 02:06:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-11-17 02:06:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2021-11-17 02:06:16,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:06:16,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875711253] [2021-11-17 02:06:16,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875711253] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:06:16,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513377798] [2021-11-17 02:06:16,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:06:16,604 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:06:16,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:06:16,605 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 02:06:16,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-17 02:06:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:17,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 2439 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-17 02:06:17,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:06:17,721 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-11-17 02:06:17,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 02:06:17,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513377798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:06:17,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 02:06:17,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 16 [2021-11-17 02:06:17,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456554190] [2021-11-17 02:06:17,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:06:17,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 02:06:17,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:06:17,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 02:06:17,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-17 02:06:17,723 INFO L87 Difference]: Start difference. First operand 12526 states and 17267 transitions. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 5 states have internal predecessors, (199), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-17 02:06:18,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:06:18,621 INFO L93 Difference]: Finished difference Result 29415 states and 41250 transitions. [2021-11-17 02:06:18,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 02:06:18,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 5 states have internal predecessors, (199), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) Word has length 361 [2021-11-17 02:06:18,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:06:18,672 INFO L225 Difference]: With dead ends: 29415 [2021-11-17 02:06:18,673 INFO L226 Difference]: Without dead ends: 16958 [2021-11-17 02:06:18,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 438 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-11-17 02:06:18,693 INFO L933 BasicCegarLoop]: 1014 mSDtfsCounter, 422 mSDsluCounter, 3810 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 4824 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-17 02:06:18,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 4824 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-17 02:06:18,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16958 states. [2021-11-17 02:06:19,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16958 to 12626. [2021-11-17 02:06:19,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12626 states, 9685 states have (on average 1.307589055240062) internal successors, (12664), 9966 states have internal predecessors, (12664), 1910 states have call successors, (1910), 850 states have call predecessors, (1910), 1030 states have return successors, (2881), 1926 states have call predecessors, (2881), 1909 states have call successors, (2881) [2021-11-17 02:06:19,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12626 states to 12626 states and 17455 transitions. [2021-11-17 02:06:19,287 INFO L78 Accepts]: Start accepts. Automaton has 12626 states and 17455 transitions. Word has length 361 [2021-11-17 02:06:19,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:06:19,287 INFO L470 AbstractCegarLoop]: Abstraction has 12626 states and 17455 transitions. [2021-11-17 02:06:19,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 5 states have internal predecessors, (199), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-17 02:06:19,287 INFO L276 IsEmpty]: Start isEmpty. Operand 12626 states and 17455 transitions. [2021-11-17 02:06:19,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2021-11-17 02:06:19,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:06:19,303 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:06:19,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-17 02:06:19,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:06:19,504 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:06:19,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:06:19,504 INFO L85 PathProgramCache]: Analyzing trace with hash -671691441, now seen corresponding path program 1 times [2021-11-17 02:06:19,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:06:19,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677352351] [2021-11-17 02:06:19,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:06:19,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:06:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:06:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:06:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:06:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:06:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:06:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:06:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 02:06:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 02:06:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 02:06:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 02:06:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-17 02:06:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-17 02:06:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:06:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-11-17 02:06:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-17 02:06:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 02:06:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-17 02:06:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-11-17 02:06:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-11-17 02:06:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-11-17 02:06:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-11-17 02:06:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-11-17 02:06:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:06:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-11-17 02:06:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:06:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 02:06:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-11-17 02:06:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:19,851 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-11-17 02:06:19,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:06:19,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677352351] [2021-11-17 02:06:19,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677352351] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:06:19,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278675748] [2021-11-17 02:06:19,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:06:19,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:06:19,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:06:19,853 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 02:06:19,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-17 02:06:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:20,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 2461 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-17 02:06:20,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:06:20,897 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-11-17 02:06:20,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 02:06:20,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278675748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:06:20,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 02:06:20,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2021-11-17 02:06:20,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081169121] [2021-11-17 02:06:20,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:06:20,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 02:06:20,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:06:20,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 02:06:20,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-17 02:06:20,899 INFO L87 Difference]: Start difference. First operand 12626 states and 17455 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-17 02:06:21,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:06:21,523 INFO L93 Difference]: Finished difference Result 27377 states and 38168 transitions. [2021-11-17 02:06:21,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 02:06:21,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 367 [2021-11-17 02:06:21,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:06:21,575 INFO L225 Difference]: With dead ends: 27377 [2021-11-17 02:06:21,575 INFO L226 Difference]: Without dead ends: 14820 [2021-11-17 02:06:21,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-17 02:06:21,605 INFO L933 BasicCegarLoop]: 926 mSDtfsCounter, 134 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 02:06:21,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 1710 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 02:06:21,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14820 states. [2021-11-17 02:06:22,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14820 to 12986. [2021-11-17 02:06:22,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12986 states, 10045 states have (on average 1.3204579392732703) internal successors, (13264), 10326 states have internal predecessors, (13264), 1910 states have call successors, (1910), 850 states have call predecessors, (1910), 1030 states have return successors, (2881), 1926 states have call predecessors, (2881), 1909 states have call successors, (2881) [2021-11-17 02:06:22,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12986 states to 12986 states and 18055 transitions. [2021-11-17 02:06:22,215 INFO L78 Accepts]: Start accepts. Automaton has 12986 states and 18055 transitions. Word has length 367 [2021-11-17 02:06:22,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:06:22,215 INFO L470 AbstractCegarLoop]: Abstraction has 12986 states and 18055 transitions. [2021-11-17 02:06:22,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-17 02:06:22,215 INFO L276 IsEmpty]: Start isEmpty. Operand 12986 states and 18055 transitions. [2021-11-17 02:06:22,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-11-17 02:06:22,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:06:22,232 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:06:22,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-17 02:06:22,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:06:22,433 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:06:22,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:06:22,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1084826391, now seen corresponding path program 1 times [2021-11-17 02:06:22,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:06:22,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146421896] [2021-11-17 02:06:22,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:06:22,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:06:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:06:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:06:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:06:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:06:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:06:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:06:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 02:06:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 02:06:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-17 02:06:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-17 02:06:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-17 02:06:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-17 02:06:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-11-17 02:06:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 02:06:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-17 02:06:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-11-17 02:06:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-11-17 02:06:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-17 02:06:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-17 02:06:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-11-17 02:06:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-11-17 02:06:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-11-17 02:06:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:06:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-11-17 02:06:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:06:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 02:06:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2021-11-17 02:06:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:22,866 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-17 02:06:22,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:06:22,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146421896] [2021-11-17 02:06:22,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146421896] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:06:22,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51307276] [2021-11-17 02:06:22,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:06:22,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:06:22,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:06:22,868 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 02:06:22,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-17 02:06:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:23,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-17 02:06:23,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:06:24,014 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 118 proven. 3 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-11-17 02:06:24,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 02:06:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-17 02:06:24,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51307276] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 02:06:24,714 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 02:06:24,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 6] total 21 [2021-11-17 02:06:24,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294202460] [2021-11-17 02:06:24,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 02:06:24,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-17 02:06:24,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:06:24,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-17 02:06:24,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2021-11-17 02:06:24,716 INFO L87 Difference]: Start difference. First operand 12986 states and 18055 transitions. Second operand has 21 states, 21 states have (on average 14.380952380952381) internal successors, (302), 10 states have internal predecessors, (302), 3 states have call successors, (82), 10 states have call predecessors, (82), 4 states have return successors, (68), 6 states have call predecessors, (68), 3 states have call successors, (68) [2021-11-17 02:06:30,689 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:06:32,559 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:06:43,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:06:43,828 INFO L93 Difference]: Finished difference Result 37328 states and 53772 transitions. [2021-11-17 02:06:43,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-17 02:06:43,828 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 14.380952380952381) internal successors, (302), 10 states have internal predecessors, (302), 3 states have call successors, (82), 10 states have call predecessors, (82), 4 states have return successors, (68), 6 states have call predecessors, (68), 3 states have call successors, (68) Word has length 374 [2021-11-17 02:06:43,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:06:43,932 INFO L225 Difference]: With dead ends: 37328 [2021-11-17 02:06:43,932 INFO L226 Difference]: Without dead ends: 24331 [2021-11-17 02:06:43,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 861 GetRequests, 827 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=164, Invalid=1026, Unknown=0, NotChecked=0, Total=1190 [2021-11-17 02:06:43,982 INFO L933 BasicCegarLoop]: 1290 mSDtfsCounter, 2500 mSDsluCounter, 12731 mSDsCounter, 0 mSdLazyCounter, 8029 mSolverCounterSat, 1086 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2649 SdHoareTripleChecker+Valid, 14021 SdHoareTripleChecker+Invalid, 9115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1086 IncrementalHoareTripleChecker+Valid, 8029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2021-11-17 02:06:43,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2649 Valid, 14021 Invalid, 9115 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1086 Valid, 8029 Invalid, 0 Unknown, 0 Unchecked, 17.7s Time] [2021-11-17 02:06:44,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24331 states. [2021-11-17 02:06:44,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24331 to 13046. [2021-11-17 02:06:44,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13046 states, 10105 states have (on average 1.3185551707075704) internal successors, (13324), 10366 states have internal predecessors, (13324), 1910 states have call successors, (1910), 850 states have call predecessors, (1910), 1030 states have return successors, (2861), 1946 states have call predecessors, (2861), 1909 states have call successors, (2861) [2021-11-17 02:06:44,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13046 states to 13046 states and 18095 transitions. [2021-11-17 02:06:44,914 INFO L78 Accepts]: Start accepts. Automaton has 13046 states and 18095 transitions. Word has length 374 [2021-11-17 02:06:44,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:06:44,914 INFO L470 AbstractCegarLoop]: Abstraction has 13046 states and 18095 transitions. [2021-11-17 02:06:44,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 14.380952380952381) internal successors, (302), 10 states have internal predecessors, (302), 3 states have call successors, (82), 10 states have call predecessors, (82), 4 states have return successors, (68), 6 states have call predecessors, (68), 3 states have call successors, (68) [2021-11-17 02:06:44,914 INFO L276 IsEmpty]: Start isEmpty. Operand 13046 states and 18095 transitions. [2021-11-17 02:06:44,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2021-11-17 02:06:44,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:06:44,930 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:06:44,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-17 02:06:45,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-17 02:06:45,131 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:06:45,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:06:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1731257059, now seen corresponding path program 2 times [2021-11-17 02:06:45,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:06:45,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849862608] [2021-11-17 02:06:45,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:06:45,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:06:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:06:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:06:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:06:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:06:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:06:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:06:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 02:06:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 02:06:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:06:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 02:06:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-17 02:06:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-17 02:06:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 02:06:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:06:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 02:06:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-17 02:06:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-17 02:06:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-11-17 02:06:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-17 02:06:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-11-17 02:06:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-11-17 02:06:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-11-17 02:06:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:06:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2021-11-17 02:06:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:06:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 02:06:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2021-11-17 02:06:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:45,595 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-11-17 02:06:45,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:06:45,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849862608] [2021-11-17 02:06:45,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849862608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:06:45,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:06:45,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-17 02:06:45,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667174343] [2021-11-17 02:06:45,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:06:45,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-17 02:06:45,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:06:45,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-17 02:06:45,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-17 02:06:45,597 INFO L87 Difference]: Start difference. First operand 13046 states and 18095 transitions. Second operand has 13 states, 13 states have (on average 15.23076923076923) internal successors, (198), 4 states have internal predecessors, (198), 3 states have call successors, (37), 10 states have call predecessors, (37), 3 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-17 02:06:49,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:06:50,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:06:53,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:06:53,190 INFO L93 Difference]: Finished difference Result 27445 states and 38298 transitions. [2021-11-17 02:06:53,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-17 02:06:53,190 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.23076923076923) internal successors, (198), 4 states have internal predecessors, (198), 3 states have call successors, (37), 10 states have call predecessors, (37), 3 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) Word has length 386 [2021-11-17 02:06:53,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:06:53,238 INFO L225 Difference]: With dead ends: 27445 [2021-11-17 02:06:53,238 INFO L226 Difference]: Without dead ends: 14468 [2021-11-17 02:06:53,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-11-17 02:06:53,264 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 1942 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 2360 mSolverCounterSat, 1128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1975 SdHoareTripleChecker+Valid, 2442 SdHoareTripleChecker+Invalid, 3488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1128 IncrementalHoareTripleChecker+Valid, 2360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-17 02:06:53,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1975 Valid, 2442 Invalid, 3488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1128 Valid, 2360 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-11-17 02:06:53,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14468 states. [2021-11-17 02:06:53,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14468 to 13148. [2021-11-17 02:06:53,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13148 states, 10183 states have (on average 1.3178827457527251) internal successors, (13420), 10432 states have internal predecessors, (13420), 1928 states have call successors, (1928), 850 states have call predecessors, (1928), 1036 states have return successors, (2903), 1982 states have call predecessors, (2903), 1927 states have call successors, (2903) [2021-11-17 02:06:53,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13148 states to 13148 states and 18251 transitions. [2021-11-17 02:06:53,905 INFO L78 Accepts]: Start accepts. Automaton has 13148 states and 18251 transitions. Word has length 386 [2021-11-17 02:06:53,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:06:53,905 INFO L470 AbstractCegarLoop]: Abstraction has 13148 states and 18251 transitions. [2021-11-17 02:06:53,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.23076923076923) internal successors, (198), 4 states have internal predecessors, (198), 3 states have call successors, (37), 10 states have call predecessors, (37), 3 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-17 02:06:53,906 INFO L276 IsEmpty]: Start isEmpty. Operand 13148 states and 18251 transitions. [2021-11-17 02:06:53,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-17 02:06:53,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:06:53,921 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:06:53,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-17 02:06:53,921 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:06:53,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:06:53,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1883877562, now seen corresponding path program 1 times [2021-11-17 02:06:53,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:06:53,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074072576] [2021-11-17 02:06:53,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:06:53,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:06:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:06:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:06:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:06:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:06:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:06:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:06:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 02:06:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 02:06:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:06:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 02:06:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-17 02:06:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-17 02:06:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 02:06:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:06:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 02:06:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-17 02:06:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-17 02:06:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-11-17 02:06:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-17 02:06:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-11-17 02:06:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-11-17 02:06:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-11-17 02:06:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-11-17 02:06:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:06:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-11-17 02:06:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:06:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 02:06:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,238 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 53 proven. 6 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-11-17 02:06:54,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:06:54,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074072576] [2021-11-17 02:06:54,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074072576] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:06:54,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361713374] [2021-11-17 02:06:54,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:06:54,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:06:54,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:06:54,240 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 02:06:54,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-17 02:06:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:54,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 2552 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 02:06:54,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:06:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-17 02:06:55,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 02:06:55,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361713374] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:06:55,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 02:06:55,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 13 [2021-11-17 02:06:55,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143494311] [2021-11-17 02:06:55,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:06:55,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 02:06:55,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:06:55,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 02:06:55,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-17 02:06:55,213 INFO L87 Difference]: Start difference. First operand 13148 states and 18251 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-17 02:06:56,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:06:56,028 INFO L93 Difference]: Finished difference Result 27473 states and 38054 transitions. [2021-11-17 02:06:56,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 02:06:56,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 392 [2021-11-17 02:06:56,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:06:56,072 INFO L225 Difference]: With dead ends: 27473 [2021-11-17 02:06:56,072 INFO L226 Difference]: Without dead ends: 14394 [2021-11-17 02:06:56,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-17 02:06:56,099 INFO L933 BasicCegarLoop]: 1002 mSDtfsCounter, 863 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-17 02:06:56,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 1210 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-17 02:06:56,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14394 states. [2021-11-17 02:06:56,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14394 to 13602. [2021-11-17 02:06:56,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13602 states, 10587 states have (on average 1.3185982809105508) internal successors, (13960), 10834 states have internal predecessors, (13960), 1950 states have call successors, (1950), 874 states have call predecessors, (1950), 1064 states have return successors, (2925), 2010 states have call predecessors, (2925), 1949 states have call successors, (2925) [2021-11-17 02:06:56,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13602 states to 13602 states and 18835 transitions. [2021-11-17 02:06:56,758 INFO L78 Accepts]: Start accepts. Automaton has 13602 states and 18835 transitions. Word has length 392 [2021-11-17 02:06:56,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:06:56,758 INFO L470 AbstractCegarLoop]: Abstraction has 13602 states and 18835 transitions. [2021-11-17 02:06:56,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-17 02:06:56,759 INFO L276 IsEmpty]: Start isEmpty. Operand 13602 states and 18835 transitions. [2021-11-17 02:06:56,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-17 02:06:56,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:06:56,774 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:06:56,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-17 02:06:56,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-17 02:06:56,976 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:06:56,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:06:56,976 INFO L85 PathProgramCache]: Analyzing trace with hash 930366278, now seen corresponding path program 2 times [2021-11-17 02:06:56,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:06:56,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602439367] [2021-11-17 02:06:56,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:06:56,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:06:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:06:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:06:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:06:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:06:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:06:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:06:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 02:06:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 02:06:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:06:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 02:06:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-17 02:06:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-17 02:06:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 02:06:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:06:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 02:06:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-17 02:06:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-17 02:06:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-11-17 02:06:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-17 02:06:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-17 02:06:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-11-17 02:06:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-11-17 02:06:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-11-17 02:06:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:06:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:06:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-11-17 02:06:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:06:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:06:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:06:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 02:06:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:06:57,431 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2021-11-17 02:06:57,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:06:57,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602439367] [2021-11-17 02:06:57,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602439367] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:06:57,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299129411] [2021-11-17 02:06:57,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-17 02:06:57,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:06:57,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:06:57,433 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 02:06:57,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-17 02:06:57,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-17 02:06:57,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-17 02:06:58,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-17 02:06:58,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:06:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-11-17 02:06:58,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 02:06:58,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299129411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:06:58,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 02:06:58,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-11-17 02:06:58,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889439180] [2021-11-17 02:06:58,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:06:58,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 02:06:58,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:06:58,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 02:06:58,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-11-17 02:06:58,644 INFO L87 Difference]: Start difference. First operand 13602 states and 18835 transitions. Second operand has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 6 states have internal predecessors, (200), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 3 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-17 02:07:00,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:07:00,741 INFO L93 Difference]: Finished difference Result 38493 states and 54671 transitions. [2021-11-17 02:07:00,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 02:07:00,742 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 6 states have internal predecessors, (200), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 3 states have call predecessors, (36), 2 states have call successors, (36) Word has length 392 [2021-11-17 02:07:00,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:07:00,812 INFO L225 Difference]: With dead ends: 38493 [2021-11-17 02:07:00,812 INFO L226 Difference]: Without dead ends: 24960 [2021-11-17 02:07:00,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2021-11-17 02:07:00,845 INFO L933 BasicCegarLoop]: 1472 mSDtfsCounter, 2411 mSDsluCounter, 7125 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2488 SdHoareTripleChecker+Valid, 8597 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-17 02:07:00,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2488 Valid, 8597 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-17 02:07:00,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24960 states. [2021-11-17 02:07:01,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24960 to 13590. [2021-11-17 02:07:01,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13590 states, 10581 states have (on average 1.318211889235422) internal successors, (13948), 10828 states have internal predecessors, (13948), 1944 states have call successors, (1944), 874 states have call predecessors, (1944), 1064 states have return successors, (2913), 2004 states have call predecessors, (2913), 1943 states have call successors, (2913) [2021-11-17 02:07:01,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13590 states to 13590 states and 18805 transitions. [2021-11-17 02:07:01,668 INFO L78 Accepts]: Start accepts. Automaton has 13590 states and 18805 transitions. Word has length 392 [2021-11-17 02:07:01,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:07:01,668 INFO L470 AbstractCegarLoop]: Abstraction has 13590 states and 18805 transitions. [2021-11-17 02:07:01,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 6 states have internal predecessors, (200), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 3 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-17 02:07:01,668 INFO L276 IsEmpty]: Start isEmpty. Operand 13590 states and 18805 transitions. [2021-11-17 02:07:01,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2021-11-17 02:07:01,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:07:01,684 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:07:01,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-17 02:07:01,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:07:01,885 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:07:01,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:07:01,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1005751635, now seen corresponding path program 1 times [2021-11-17 02:07:01,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:07:01,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137799031] [2021-11-17 02:07:01,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:07:01,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:07:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:01,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:01,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:01,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:01,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:07:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:01,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:01,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:07:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:07:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:07:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:07:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:07:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 02:07:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 02:07:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:07:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 02:07:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-17 02:07:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-17 02:07:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 02:07:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:07:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 02:07:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-17 02:07:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-17 02:07:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-11-17 02:07:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-17 02:07:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-17 02:07:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-11-17 02:07:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-11-17 02:07:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-11-17 02:07:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:07:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-11-17 02:07:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 02:07:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:07:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2021-11-17 02:07:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:02,188 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-11-17 02:07:02,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:07:02,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137799031] [2021-11-17 02:07:02,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137799031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:07:02,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:07:02,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-17 02:07:02,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42517715] [2021-11-17 02:07:02,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:07:02,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-17 02:07:02,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:07:02,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-17 02:07:02,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-17 02:07:02,190 INFO L87 Difference]: Start difference. First operand 13590 states and 18805 transitions. Second operand has 11 states, 11 states have (on average 18.818181818181817) internal successors, (207), 3 states have internal predecessors, (207), 2 states have call successors, (35), 10 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-17 02:07:08,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:07:08,809 INFO L93 Difference]: Finished difference Result 28669 states and 41006 transitions. [2021-11-17 02:07:08,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 02:07:08,810 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.818181818181817) internal successors, (207), 3 states have internal predecessors, (207), 2 states have call successors, (35), 10 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 397 [2021-11-17 02:07:08,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:07:08,862 INFO L225 Difference]: With dead ends: 28669 [2021-11-17 02:07:08,862 INFO L226 Difference]: Without dead ends: 15148 [2021-11-17 02:07:08,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-17 02:07:08,896 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 1128 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 1938 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 2601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 1938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-17 02:07:08,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1161 Valid, 2026 Invalid, 2601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 1938 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-11-17 02:07:08,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15148 states. [2021-11-17 02:07:09,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15148 to 13590. [2021-11-17 02:07:09,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13590 states, 10581 states have (on average 1.3159436726207352) internal successors, (13924), 10828 states have internal predecessors, (13924), 1944 states have call successors, (1944), 874 states have call predecessors, (1944), 1064 states have return successors, (2913), 2004 states have call predecessors, (2913), 1943 states have call successors, (2913) [2021-11-17 02:07:09,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13590 states to 13590 states and 18781 transitions. [2021-11-17 02:07:09,768 INFO L78 Accepts]: Start accepts. Automaton has 13590 states and 18781 transitions. Word has length 397 [2021-11-17 02:07:09,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:07:09,768 INFO L470 AbstractCegarLoop]: Abstraction has 13590 states and 18781 transitions. [2021-11-17 02:07:09,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.818181818181817) internal successors, (207), 3 states have internal predecessors, (207), 2 states have call successors, (35), 10 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-17 02:07:09,768 INFO L276 IsEmpty]: Start isEmpty. Operand 13590 states and 18781 transitions. [2021-11-17 02:07:09,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-11-17 02:07:09,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:07:09,784 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:07:09,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-17 02:07:09,784 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:07:09,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:07:09,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1425857829, now seen corresponding path program 1 times [2021-11-17 02:07:09,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:07:09,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536567724] [2021-11-17 02:07:09,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:07:09,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:07:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:07:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:07:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:07:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:07:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:07:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:07:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 02:07:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 02:07:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:07:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 02:07:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-17 02:07:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-17 02:07:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 02:07:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:07:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 02:07:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-17 02:07:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-17 02:07:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-11-17 02:07:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-17 02:07:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-17 02:07:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-11-17 02:07:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:09,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-11-17 02:07:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:10,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-11-17 02:07:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:10,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:10,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:10,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:07:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:10,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-11-17 02:07:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:10,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 02:07:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:10,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:07:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:10,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-11-17 02:07:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:10,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:10,065 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-11-17 02:07:10,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:07:10,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536567724] [2021-11-17 02:07:10,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536567724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:07:10,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:07:10,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-17 02:07:10,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871318375] [2021-11-17 02:07:10,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:07:10,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-17 02:07:10,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:07:10,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-17 02:07:10,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-17 02:07:10,067 INFO L87 Difference]: Start difference. First operand 13590 states and 18781 transitions. Second operand has 11 states, 11 states have (on average 19.272727272727273) internal successors, (212), 3 states have internal predecessors, (212), 2 states have call successors, (35), 10 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-17 02:07:16,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:07:16,106 INFO L93 Difference]: Finished difference Result 28165 states and 40094 transitions. [2021-11-17 02:07:16,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 02:07:16,106 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 19.272727272727273) internal successors, (212), 3 states have internal predecessors, (212), 2 states have call successors, (35), 10 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 402 [2021-11-17 02:07:16,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:07:16,151 INFO L225 Difference]: With dead ends: 28165 [2021-11-17 02:07:16,151 INFO L226 Difference]: Without dead ends: 14644 [2021-11-17 02:07:16,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-17 02:07:16,181 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 1307 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 847 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 847 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-17 02:07:16,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1341 Valid, 2044 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [847 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-17 02:07:16,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14644 states. [2021-11-17 02:07:16,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14644 to 13086. [2021-11-17 02:07:16,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13086 states, 10077 states have (on average 1.2888756574377296) internal successors, (12988), 10324 states have internal predecessors, (12988), 1944 states have call successors, (1944), 874 states have call predecessors, (1944), 1064 states have return successors, (2913), 2004 states have call predecessors, (2913), 1943 states have call successors, (2913) [2021-11-17 02:07:16,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13086 states to 13086 states and 17845 transitions. [2021-11-17 02:07:16,911 INFO L78 Accepts]: Start accepts. Automaton has 13086 states and 17845 transitions. Word has length 402 [2021-11-17 02:07:16,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:07:16,912 INFO L470 AbstractCegarLoop]: Abstraction has 13086 states and 17845 transitions. [2021-11-17 02:07:16,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.272727272727273) internal successors, (212), 3 states have internal predecessors, (212), 2 states have call successors, (35), 10 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-17 02:07:16,912 INFO L276 IsEmpty]: Start isEmpty. Operand 13086 states and 17845 transitions. [2021-11-17 02:07:16,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-11-17 02:07:16,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:07:16,930 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:07:16,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-17 02:07:16,930 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:07:16,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:07:16,931 INFO L85 PathProgramCache]: Analyzing trace with hash 546258289, now seen corresponding path program 1 times [2021-11-17 02:07:16,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:07:16,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816641560] [2021-11-17 02:07:16,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:07:16,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:07:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:07:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:07:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:07:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:07:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:07:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:07:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 02:07:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 02:07:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:07:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 02:07:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-17 02:07:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-17 02:07:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 02:07:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:07:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 02:07:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-17 02:07:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-17 02:07:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-11-17 02:07:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-17 02:07:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-17 02:07:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-11-17 02:07:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-11-17 02:07:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-11-17 02:07:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:07:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-11-17 02:07:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 02:07:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 02:07:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2021-11-17 02:07:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-11-17 02:07:17,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:07:17,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816641560] [2021-11-17 02:07:17,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816641560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:07:17,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:07:17,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-17 02:07:17,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667295204] [2021-11-17 02:07:17,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:07:17,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-17 02:07:17,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:07:17,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-17 02:07:17,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-17 02:07:17,228 INFO L87 Difference]: Start difference. First operand 13086 states and 17845 transitions. Second operand has 11 states, 11 states have (on average 19.454545454545453) internal successors, (214), 3 states have internal predecessors, (214), 2 states have call successors, (35), 10 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-17 02:07:22,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:07:25,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:07:25,456 INFO L93 Difference]: Finished difference Result 27589 states and 38990 transitions. [2021-11-17 02:07:25,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 02:07:25,456 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 19.454545454545453) internal successors, (214), 3 states have internal predecessors, (214), 2 states have call successors, (35), 10 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 404 [2021-11-17 02:07:25,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:07:25,505 INFO L225 Difference]: With dead ends: 27589 [2021-11-17 02:07:25,505 INFO L226 Difference]: Without dead ends: 14572 [2021-11-17 02:07:25,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-11-17 02:07:25,535 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 886 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 2201 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 2201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-17 02:07:25,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [910 Valid, 2171 Invalid, 2756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 2201 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2021-11-17 02:07:25,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14572 states. [2021-11-17 02:07:26,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14572 to 13014. [2021-11-17 02:07:26,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13014 states, 10005 states have (on average 1.2861569215392303) internal successors, (12868), 10252 states have internal predecessors, (12868), 1944 states have call successors, (1944), 874 states have call predecessors, (1944), 1064 states have return successors, (2913), 2004 states have call predecessors, (2913), 1943 states have call successors, (2913) [2021-11-17 02:07:26,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13014 states to 13014 states and 17725 transitions. [2021-11-17 02:07:26,405 INFO L78 Accepts]: Start accepts. Automaton has 13014 states and 17725 transitions. Word has length 404 [2021-11-17 02:07:26,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:07:26,406 INFO L470 AbstractCegarLoop]: Abstraction has 13014 states and 17725 transitions. [2021-11-17 02:07:26,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.454545454545453) internal successors, (214), 3 states have internal predecessors, (214), 2 states have call successors, (35), 10 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-17 02:07:26,406 INFO L276 IsEmpty]: Start isEmpty. Operand 13014 states and 17725 transitions. [2021-11-17 02:07:26,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-11-17 02:07:26,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:07:26,422 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:07:26,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-17 02:07:26,423 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:07:26,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:07:26,423 INFO L85 PathProgramCache]: Analyzing trace with hash -707015047, now seen corresponding path program 1 times [2021-11-17 02:07:26,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:07:26,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328359105] [2021-11-17 02:07:26,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:07:26,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:07:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:07:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:07:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:07:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:07:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:07:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:07:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 02:07:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 02:07:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:07:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 02:07:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-17 02:07:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-17 02:07:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 02:07:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:07:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 02:07:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-17 02:07:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-17 02:07:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-11-17 02:07:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-17 02:07:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-17 02:07:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-11-17 02:07:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-11-17 02:07:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-11-17 02:07:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:07:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-11-17 02:07:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-17 02:07:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 02:07:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2021-11-17 02:07:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:26,721 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-11-17 02:07:26,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:07:26,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328359105] [2021-11-17 02:07:26,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328359105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:07:26,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:07:26,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-17 02:07:26,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641709054] [2021-11-17 02:07:26,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:07:26,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-17 02:07:26,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:07:26,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-17 02:07:26,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-17 02:07:26,723 INFO L87 Difference]: Start difference. First operand 13014 states and 17725 transitions. Second operand has 11 states, 11 states have (on average 19.454545454545453) internal successors, (214), 3 states have internal predecessors, (214), 2 states have call successors, (35), 10 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-17 02:07:30,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:07:32,790 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:07:35,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:07:35,431 INFO L93 Difference]: Finished difference Result 27541 states and 38870 transitions. [2021-11-17 02:07:35,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-17 02:07:35,432 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 19.454545454545453) internal successors, (214), 3 states have internal predecessors, (214), 2 states have call successors, (35), 10 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 404 [2021-11-17 02:07:35,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:07:35,485 INFO L225 Difference]: With dead ends: 27541 [2021-11-17 02:07:35,485 INFO L226 Difference]: Without dead ends: 14596 [2021-11-17 02:07:35,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-17 02:07:35,517 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 964 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 2258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 670 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-17 02:07:35,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [997 Valid, 1805 Invalid, 2258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [670 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2021-11-17 02:07:35,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14596 states. [2021-11-17 02:07:36,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14596 to 13014. [2021-11-17 02:07:36,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13014 states, 10005 states have (on average 1.27896051974013) internal successors, (12796), 10252 states have internal predecessors, (12796), 1944 states have call successors, (1944), 874 states have call predecessors, (1944), 1064 states have return successors, (2913), 2004 states have call predecessors, (2913), 1943 states have call successors, (2913) [2021-11-17 02:07:36,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13014 states to 13014 states and 17653 transitions. [2021-11-17 02:07:36,298 INFO L78 Accepts]: Start accepts. Automaton has 13014 states and 17653 transitions. Word has length 404 [2021-11-17 02:07:36,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:07:36,298 INFO L470 AbstractCegarLoop]: Abstraction has 13014 states and 17653 transitions. [2021-11-17 02:07:36,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.454545454545453) internal successors, (214), 3 states have internal predecessors, (214), 2 states have call successors, (35), 10 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-17 02:07:36,298 INFO L276 IsEmpty]: Start isEmpty. Operand 13014 states and 17653 transitions. [2021-11-17 02:07:36,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2021-11-17 02:07:36,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:07:36,318 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:07:36,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-17 02:07:36,318 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:07:36,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:07:36,319 INFO L85 PathProgramCache]: Analyzing trace with hash 2095980638, now seen corresponding path program 1 times [2021-11-17 02:07:36,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:07:36,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978148418] [2021-11-17 02:07:36,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:07:36,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:07:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:07:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:07:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:07:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:07:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:07:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:07:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 02:07:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 02:07:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:07:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 02:07:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-17 02:07:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-17 02:07:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 02:07:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:07:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 02:07:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-17 02:07:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-17 02:07:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-11-17 02:07:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-17 02:07:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-17 02:07:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-11-17 02:07:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-11-17 02:07:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-11-17 02:07:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:07:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-11-17 02:07:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 02:07:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-17 02:07:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-11-17 02:07:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:36,654 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-11-17 02:07:36,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:07:36,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978148418] [2021-11-17 02:07:36,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978148418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:07:36,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:07:36,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-17 02:07:36,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70764348] [2021-11-17 02:07:36,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:07:36,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-17 02:07:36,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:07:36,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-17 02:07:36,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-17 02:07:36,657 INFO L87 Difference]: Start difference. First operand 13014 states and 17653 transitions. Second operand has 12 states, 12 states have (on average 18.0) internal successors, (216), 4 states have internal predecessors, (216), 2 states have call successors, (35), 10 states have call predecessors, (35), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2021-11-17 02:07:40,146 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:07:47,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:07:47,987 INFO L93 Difference]: Finished difference Result 40119 states and 55386 transitions. [2021-11-17 02:07:47,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-17 02:07:47,992 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.0) internal successors, (216), 4 states have internal predecessors, (216), 2 states have call successors, (35), 10 states have call predecessors, (35), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 406 [2021-11-17 02:07:47,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:07:48,075 INFO L225 Difference]: With dead ends: 40119 [2021-11-17 02:07:48,076 INFO L226 Difference]: Without dead ends: 27174 [2021-11-17 02:07:48,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=512, Unknown=0, NotChecked=0, Total=702 [2021-11-17 02:07:48,104 INFO L933 BasicCegarLoop]: 898 mSDtfsCounter, 2405 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 2816 mSolverCounterSat, 1165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2502 SdHoareTripleChecker+Valid, 2981 SdHoareTripleChecker+Invalid, 3981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1165 IncrementalHoareTripleChecker+Valid, 2816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-17 02:07:48,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2502 Valid, 2981 Invalid, 3981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1165 Valid, 2816 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2021-11-17 02:07:48,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27174 states. [2021-11-17 02:07:49,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27174 to 20943. [2021-11-17 02:07:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20943 states, 16217 states have (on average 1.2842079299500524) internal successors, (20826), 16615 states have internal predecessors, (20826), 3036 states have call successors, (3036), 1386 states have call predecessors, (3036), 1689 states have return successors, (4442), 3112 states have call predecessors, (4442), 3035 states have call successors, (4442) [2021-11-17 02:07:49,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20943 states to 20943 states and 28304 transitions. [2021-11-17 02:07:49,352 INFO L78 Accepts]: Start accepts. Automaton has 20943 states and 28304 transitions. Word has length 406 [2021-11-17 02:07:49,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:07:49,353 INFO L470 AbstractCegarLoop]: Abstraction has 20943 states and 28304 transitions. [2021-11-17 02:07:49,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.0) internal successors, (216), 4 states have internal predecessors, (216), 2 states have call successors, (35), 10 states have call predecessors, (35), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2021-11-17 02:07:49,353 INFO L276 IsEmpty]: Start isEmpty. Operand 20943 states and 28304 transitions. [2021-11-17 02:07:49,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2021-11-17 02:07:49,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:07:49,380 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-17 02:07:49,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-17 02:07:49,381 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:07:49,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:07:49,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1489292832, now seen corresponding path program 1 times [2021-11-17 02:07:49,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:07:49,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865640279] [2021-11-17 02:07:49,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:07:49,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:07:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:07:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:07:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:07:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:07:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:07:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:07:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 02:07:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 02:07:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:07:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 02:07:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-17 02:07:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-17 02:07:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 02:07:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:07:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 02:07:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-17 02:07:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-17 02:07:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-11-17 02:07:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-17 02:07:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-17 02:07:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-11-17 02:07:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-11-17 02:07:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-11-17 02:07:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2021-11-17 02:07:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:07:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-11-17 02:07:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:50,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:51,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:51,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:51,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:07:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:51,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 02:07:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:51,012 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 118 proven. 82 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-11-17 02:07:51,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:07:51,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865640279] [2021-11-17 02:07:51,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865640279] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:07:51,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274035063] [2021-11-17 02:07:51,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:07:51,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:07:51,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:07:51,014 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 02:07:51,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-17 02:07:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:51,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 2663 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-17 02:07:51,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:07:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-11-17 02:07:52,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 02:07:52,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274035063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:07:52,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 02:07:52,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [41] total 43 [2021-11-17 02:07:52,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708271080] [2021-11-17 02:07:52,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:07:52,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 02:07:52,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:07:52,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 02:07:52,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1664, Unknown=0, NotChecked=0, Total=1806 [2021-11-17 02:07:52,056 INFO L87 Difference]: Start difference. First operand 20943 states and 28304 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-17 02:07:53,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:07:53,420 INFO L93 Difference]: Finished difference Result 41867 states and 56579 transitions. [2021-11-17 02:07:53,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 02:07:53,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 417 [2021-11-17 02:07:53,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:07:53,487 INFO L225 Difference]: With dead ends: 41867 [2021-11-17 02:07:53,487 INFO L226 Difference]: Without dead ends: 20993 [2021-11-17 02:07:53,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=1746, Unknown=0, NotChecked=0, Total=1892 [2021-11-17 02:07:53,534 INFO L933 BasicCegarLoop]: 1346 mSDtfsCounter, 769 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 3259 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-17 02:07:53,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 3259 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-17 02:07:53,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20993 states. [2021-11-17 02:07:54,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20993 to 20943. [2021-11-17 02:07:54,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20943 states, 16217 states have (on average 1.2834679657149903) internal successors, (20814), 16615 states have internal predecessors, (20814), 3036 states have call successors, (3036), 1386 states have call predecessors, (3036), 1689 states have return successors, (4442), 3112 states have call predecessors, (4442), 3035 states have call successors, (4442) [2021-11-17 02:07:54,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20943 states to 20943 states and 28292 transitions. [2021-11-17 02:07:54,883 INFO L78 Accepts]: Start accepts. Automaton has 20943 states and 28292 transitions. Word has length 417 [2021-11-17 02:07:54,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:07:54,884 INFO L470 AbstractCegarLoop]: Abstraction has 20943 states and 28292 transitions. [2021-11-17 02:07:54,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-17 02:07:54,884 INFO L276 IsEmpty]: Start isEmpty. Operand 20943 states and 28292 transitions. [2021-11-17 02:07:54,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2021-11-17 02:07:54,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:07:54,906 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:07:54,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-17 02:07:55,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-11-17 02:07:55,106 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:07:55,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:07:55,107 INFO L85 PathProgramCache]: Analyzing trace with hash -501583641, now seen corresponding path program 1 times [2021-11-17 02:07:55,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:07:55,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146151392] [2021-11-17 02:07:55,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:07:55,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:07:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:07:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:07:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:07:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:07:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:07:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:07:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 02:07:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 02:07:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:07:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 02:07:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-17 02:07:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-17 02:07:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 02:07:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:07:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 02:07:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-17 02:07:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-17 02:07:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-11-17 02:07:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-17 02:07:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-17 02:07:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-11-17 02:07:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-11-17 02:07:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-11-17 02:07:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:07:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:07:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-11-17 02:07:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 02:07:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-17 02:07:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2021-11-17 02:07:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:07:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:07:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:07:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 02:07:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:07:55,587 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2021-11-17 02:07:55,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:07:55,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146151392] [2021-11-17 02:07:55,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146151392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:07:55,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:07:55,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-17 02:07:55,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339580650] [2021-11-17 02:07:55,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:07:55,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-17 02:07:55,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:07:55,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-17 02:07:55,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-11-17 02:07:55,590 INFO L87 Difference]: Start difference. First operand 20943 states and 28292 transitions. Second operand has 17 states, 17 states have (on average 13.352941176470589) internal successors, (227), 7 states have internal predecessors, (227), 2 states have call successors, (40), 11 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-17 02:08:06,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:08:06,380 INFO L93 Difference]: Finished difference Result 45238 states and 63754 transitions. [2021-11-17 02:08:06,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-17 02:08:06,381 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.352941176470589) internal successors, (227), 7 states have internal predecessors, (227), 2 states have call successors, (40), 11 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) Word has length 434 [2021-11-17 02:08:06,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:08:06,471 INFO L225 Difference]: With dead ends: 45238 [2021-11-17 02:08:06,471 INFO L226 Difference]: Without dead ends: 24364 [2021-11-17 02:08:06,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2021-11-17 02:08:06,528 INFO L933 BasicCegarLoop]: 644 mSDtfsCounter, 1307 mSDsluCounter, 3041 mSDsCounter, 0 mSdLazyCounter, 3661 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 3685 SdHoareTripleChecker+Invalid, 4546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 3661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-17 02:08:06,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1341 Valid, 3685 Invalid, 4546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [885 Valid, 3661 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2021-11-17 02:08:06,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24364 states. [2021-11-17 02:08:07,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24364 to 21171. [2021-11-17 02:08:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21171 states, 16439 states have (on average 1.2796398807713365) internal successors, (21036), 16807 states have internal predecessors, (21036), 3036 states have call successors, (3036), 1386 states have call predecessors, (3036), 1695 states have return successors, (4460), 3148 states have call predecessors, (4460), 3035 states have call successors, (4460) [2021-11-17 02:08:07,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21171 states to 21171 states and 28532 transitions. [2021-11-17 02:08:07,975 INFO L78 Accepts]: Start accepts. Automaton has 21171 states and 28532 transitions. Word has length 434 [2021-11-17 02:08:07,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:08:07,976 INFO L470 AbstractCegarLoop]: Abstraction has 21171 states and 28532 transitions. [2021-11-17 02:08:07,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.352941176470589) internal successors, (227), 7 states have internal predecessors, (227), 2 states have call successors, (40), 11 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-17 02:08:07,976 INFO L276 IsEmpty]: Start isEmpty. Operand 21171 states and 28532 transitions. [2021-11-17 02:08:07,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2021-11-17 02:08:07,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:08:07,999 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:08:07,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-17 02:08:07,999 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:08:08,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:08:08,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1904936793, now seen corresponding path program 1 times [2021-11-17 02:08:08,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:08:08,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029911309] [2021-11-17 02:08:08,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:08:08,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:08:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:08:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:08:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:08:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:08:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 02:08:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-17 02:08:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:08:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:08:08,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 02:08:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:08:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 02:08:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:08:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:08:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 02:08:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-17 02:08:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-17 02:08:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 02:08:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:08:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 02:08:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-17 02:08:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-17 02:08:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-11-17 02:08:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-17 02:08:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-17 02:08:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-11-17 02:08:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-11-17 02:08:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-11-17 02:08:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:08:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:08:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-11-17 02:08:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 02:08:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-17 02:08:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2021-11-17 02:08:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:08:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 02:08:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2021-11-17 02:08:08,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:08:08,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029911309] [2021-11-17 02:08:08,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029911309] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:08:08,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391979129] [2021-11-17 02:08:08,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:08:08,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:08:08,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:08:08,440 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 02:08:08,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-17 02:08:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:09,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 2848 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-17 02:08:09,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:08:10,166 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2021-11-17 02:08:10,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 02:08:10,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391979129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:08:10,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 02:08:10,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2021-11-17 02:08:10,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791268538] [2021-11-17 02:08:10,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:08:10,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 02:08:10,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:08:10,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 02:08:10,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-17 02:08:10,167 INFO L87 Difference]: Start difference. First operand 21171 states and 28532 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2021-11-17 02:08:11,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:08:11,419 INFO L93 Difference]: Finished difference Result 42322 states and 57043 transitions. [2021-11-17 02:08:11,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 02:08:11,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 434 [2021-11-17 02:08:11,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:08:11,491 INFO L225 Difference]: With dead ends: 42322 [2021-11-17 02:08:11,491 INFO L226 Difference]: Without dead ends: 21172 [2021-11-17 02:08:11,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-17 02:08:11,531 INFO L933 BasicCegarLoop]: 728 mSDtfsCounter, 3 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 02:08:11,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2179 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 02:08:11,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21172 states. [2021-11-17 02:08:12,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21172 to 21172. [2021-11-17 02:08:12,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21172 states, 16440 states have (on average 1.2796228710462287) internal successors, (21037), 16808 states have internal predecessors, (21037), 3036 states have call successors, (3036), 1386 states have call predecessors, (3036), 1695 states have return successors, (4460), 3148 states have call predecessors, (4460), 3035 states have call successors, (4460) [2021-11-17 02:08:12,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21172 states to 21172 states and 28533 transitions. [2021-11-17 02:08:12,742 INFO L78 Accepts]: Start accepts. Automaton has 21172 states and 28533 transitions. Word has length 434 [2021-11-17 02:08:12,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:08:12,743 INFO L470 AbstractCegarLoop]: Abstraction has 21172 states and 28533 transitions. [2021-11-17 02:08:12,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2021-11-17 02:08:12,743 INFO L276 IsEmpty]: Start isEmpty. Operand 21172 states and 28533 transitions. [2021-11-17 02:08:12,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2021-11-17 02:08:12,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:08:12,763 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:08:12,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-17 02:08:12,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-17 02:08:12,964 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:08:12,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:08:12,964 INFO L85 PathProgramCache]: Analyzing trace with hash -533426953, now seen corresponding path program 1 times [2021-11-17 02:08:12,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:08:12,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541921617] [2021-11-17 02:08:12,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:08:12,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:08:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:08:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:08:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:08:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:08:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-17 02:08:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-17 02:08:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-17 02:08:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:08:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-17 02:08:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:08:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-17 02:08:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:08:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-17 02:08:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-11-17 02:08:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 02:08:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-17 02:08:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-11-17 02:08:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-17 02:08:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-17 02:08:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-11-17 02:08:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-17 02:08:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-11-17 02:08:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-11-17 02:08:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-11-17 02:08:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-11-17 02:08:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-11-17 02:08:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-11-17 02:08:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:08:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:08:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-11-17 02:08:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 02:08:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-17 02:08:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2021-11-17 02:08:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:08:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 02:08:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-11-17 02:08:13,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:08:13,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541921617] [2021-11-17 02:08:13,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541921617] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:08:13,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628690585] [2021-11-17 02:08:13,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:08:13,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:08:13,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:08:13,359 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 02:08:13,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-17 02:08:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:14,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 2860 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-17 02:08:14,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:08:14,863 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 140 proven. 1 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2021-11-17 02:08:14,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 02:08:15,619 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-11-17 02:08:15,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628690585] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 02:08:15,619 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 02:08:15,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2021-11-17 02:08:15,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970434149] [2021-11-17 02:08:15,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 02:08:15,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-17 02:08:15,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:08:15,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-17 02:08:15,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-11-17 02:08:15,621 INFO L87 Difference]: Start difference. First operand 21172 states and 28533 transitions. Second operand has 19 states, 19 states have (on average 17.63157894736842) internal successors, (335), 10 states have internal predecessors, (335), 2 states have call successors, (93), 11 states have call predecessors, (93), 4 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2021-11-17 02:08:19,891 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:08:23,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:08:23,331 INFO L93 Difference]: Finished difference Result 44690 states and 60656 transitions. [2021-11-17 02:08:23,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-17 02:08:23,332 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 17.63157894736842) internal successors, (335), 10 states have internal predecessors, (335), 2 states have call successors, (93), 11 states have call predecessors, (93), 4 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) Word has length 436 [2021-11-17 02:08:23,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:08:23,397 INFO L225 Difference]: With dead ends: 44690 [2021-11-17 02:08:23,397 INFO L226 Difference]: Without dead ends: 23536 [2021-11-17 02:08:23,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 992 GetRequests, 961 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=232, Invalid=824, Unknown=0, NotChecked=0, Total=1056 [2021-11-17 02:08:23,433 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 1509 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 1066 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 2346 SdHoareTripleChecker+Invalid, 3301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1066 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-17 02:08:23,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1541 Valid, 2346 Invalid, 3301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1066 Valid, 2234 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-11-17 02:08:23,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23536 states. [2021-11-17 02:08:24,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23536 to 21187. [2021-11-17 02:08:24,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21187 states, 16449 states have (on average 1.2794698765882424) internal successors, (21046), 16817 states have internal predecessors, (21046), 3036 states have call successors, (3036), 1386 states have call predecessors, (3036), 1701 states have return successors, (4490), 3148 states have call predecessors, (4490), 3035 states have call successors, (4490) [2021-11-17 02:08:24,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21187 states to 21187 states and 28572 transitions. [2021-11-17 02:08:24,698 INFO L78 Accepts]: Start accepts. Automaton has 21187 states and 28572 transitions. Word has length 436 [2021-11-17 02:08:24,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:08:24,698 INFO L470 AbstractCegarLoop]: Abstraction has 21187 states and 28572 transitions. [2021-11-17 02:08:24,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.63157894736842) internal successors, (335), 10 states have internal predecessors, (335), 2 states have call successors, (93), 11 states have call predecessors, (93), 4 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2021-11-17 02:08:24,698 INFO L276 IsEmpty]: Start isEmpty. Operand 21187 states and 28572 transitions. [2021-11-17 02:08:24,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2021-11-17 02:08:24,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:08:24,721 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:08:24,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-17 02:08:24,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-17 02:08:24,922 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:08:24,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:08:24,922 INFO L85 PathProgramCache]: Analyzing trace with hash -572702297, now seen corresponding path program 2 times [2021-11-17 02:08:24,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:08:24,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981241915] [2021-11-17 02:08:24,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:08:24,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:08:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:08:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:08:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:08:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:08:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 02:08:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 02:08:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 02:08:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:08:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-17 02:08:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:08:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 02:08:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:08:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 02:08:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 02:08:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-17 02:08:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-11-17 02:08:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-17 02:08:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-17 02:08:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-17 02:08:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-11-17 02:08:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-11-17 02:08:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-11-17 02:08:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-17 02:08:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-11-17 02:08:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-11-17 02:08:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-11-17 02:08:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-11-17 02:08:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:08:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:08:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-11-17 02:08:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 02:08:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-17 02:08:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2021-11-17 02:08:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:08:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 02:08:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2021-11-17 02:08:25,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:08:25,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981241915] [2021-11-17 02:08:25,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981241915] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:08:25,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946297656] [2021-11-17 02:08:25,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-17 02:08:25,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:08:25,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:08:25,439 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 02:08:25,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-17 02:08:28,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-17 02:08:28,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-17 02:08:28,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 2896 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-17 02:08:28,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:08:29,359 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2021-11-17 02:08:29,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 02:08:30,175 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2021-11-17 02:08:30,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946297656] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 02:08:30,176 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 02:08:30,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 4, 6] total 22 [2021-11-17 02:08:30,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86840594] [2021-11-17 02:08:30,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 02:08:30,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-17 02:08:30,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:08:30,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-17 02:08:30,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2021-11-17 02:08:30,178 INFO L87 Difference]: Start difference. First operand 21187 states and 28572 transitions. Second operand has 22 states, 22 states have (on average 20.272727272727273) internal successors, (446), 13 states have internal predecessors, (446), 6 states have call successors, (109), 12 states have call predecessors, (109), 5 states have return successors, (105), 6 states have call predecessors, (105), 6 states have call successors, (105) [2021-11-17 02:08:34,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 02:08:41,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:08:41,731 INFO L93 Difference]: Finished difference Result 46093 states and 62867 transitions. [2021-11-17 02:08:41,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-17 02:08:41,731 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 20.272727272727273) internal successors, (446), 13 states have internal predecessors, (446), 6 states have call successors, (109), 12 states have call predecessors, (109), 5 states have return successors, (105), 6 states have call predecessors, (105), 6 states have call successors, (105) Word has length 442 [2021-11-17 02:08:41,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:08:41,829 INFO L225 Difference]: With dead ends: 46093 [2021-11-17 02:08:41,829 INFO L226 Difference]: Without dead ends: 24979 [2021-11-17 02:08:41,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1018 GetRequests, 973 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=515, Invalid=1647, Unknown=0, NotChecked=0, Total=2162 [2021-11-17 02:08:41,881 INFO L933 BasicCegarLoop]: 648 mSDtfsCounter, 2735 mSDsluCounter, 1868 mSDsCounter, 0 mSdLazyCounter, 4130 mSolverCounterSat, 1720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2768 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 5850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1720 IncrementalHoareTripleChecker+Valid, 4130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-17 02:08:41,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2768 Valid, 2516 Invalid, 5850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1720 Valid, 4130 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2021-11-17 02:08:41,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24979 states. [2021-11-17 02:08:43,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24979 to 22072. [2021-11-17 02:08:43,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22072 states, 17214 states have (on average 1.2740211455791797) internal successors, (21931), 17567 states have internal predecessors, (21931), 3156 states have call successors, (3156), 1386 states have call predecessors, (3156), 1701 states have return successors, (4655), 3283 states have call predecessors, (4655), 3155 states have call successors, (4655) [2021-11-17 02:08:43,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22072 states to 22072 states and 29742 transitions. [2021-11-17 02:08:43,428 INFO L78 Accepts]: Start accepts. Automaton has 22072 states and 29742 transitions. Word has length 442 [2021-11-17 02:08:43,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:08:43,429 INFO L470 AbstractCegarLoop]: Abstraction has 22072 states and 29742 transitions. [2021-11-17 02:08:43,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 20.272727272727273) internal successors, (446), 13 states have internal predecessors, (446), 6 states have call successors, (109), 12 states have call predecessors, (109), 5 states have return successors, (105), 6 states have call predecessors, (105), 6 states have call successors, (105) [2021-11-17 02:08:43,429 INFO L276 IsEmpty]: Start isEmpty. Operand 22072 states and 29742 transitions. [2021-11-17 02:08:43,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2021-11-17 02:08:43,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:08:43,458 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:08:43,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-17 02:08:43,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-17 02:08:43,659 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:08:43,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:08:43,659 INFO L85 PathProgramCache]: Analyzing trace with hash -695436302, now seen corresponding path program 3 times [2021-11-17 02:08:43,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:08:43,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265787130] [2021-11-17 02:08:43,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:08:43,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:08:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:08:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:08:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:08:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 02:08:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 02:08:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 02:08:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 02:08:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:08:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-17 02:08:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:08:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 02:08:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:08:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 02:08:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 02:08:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-17 02:08:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-11-17 02:08:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-17 02:08:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-17 02:08:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-17 02:08:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-11-17 02:08:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-11-17 02:08:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-11-17 02:08:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:43,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-17 02:08:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:44,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-11-17 02:08:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:44,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-11-17 02:08:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:44,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-11-17 02:08:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:44,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-11-17 02:08:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:44,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:44,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:08:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:44,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:08:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:44,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-11-17 02:08:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:44,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 02:08:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:44,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-17 02:08:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:44,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2021-11-17 02:08:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:44,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:44,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:44,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:08:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:44,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:08:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:44,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-17 02:08:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:44,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 02:08:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:08:44,256 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 42 proven. 28 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2021-11-17 02:08:44,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:08:44,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265787130] [2021-11-17 02:08:44,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265787130] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:08:44,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318501167] [2021-11-17 02:08:44,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-17 02:08:44,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:08:44,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:08:44,258 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 02:08:44,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process Killed by 15