./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.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 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:05:46,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:05:46,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:05:46,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:05:46,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:05:46,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:05:46,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:05:46,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:05:46,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:05:46,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:05:46,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:05:46,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:05:46,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:05:46,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:05:46,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:05:46,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:05:46,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:05:46,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:05:46,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:05:46,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:05:46,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:05:46,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:05:46,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:05:46,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:05:46,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:05:46,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:05:46,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:05:46,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:05:46,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:05:46,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:05:46,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:05:46,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:05:46,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:05:46,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:05:46,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:05:46,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:05:46,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:05:46,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:05:46,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:05:46,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:05:46,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:05:46,523 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:05:46,544 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:05:46,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:05:46,545 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:05:46,545 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:05:46,546 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:05:46,546 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:05:46,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:05:46,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:05:46,547 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:05:46,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:05:46,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:05:46,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:05:46,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:05:46,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:05:46,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:05:46,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:05:46,549 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:05:46,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:05:46,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:05:46,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:05:46,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:05:46,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:05:46,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:05:46,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:05:46,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:05:46,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:05:46,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:05:46,551 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:05:46,551 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:05:46,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:05:46,551 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:05:46,551 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a [2021-12-22 14:05:46,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:05:46,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:05:46,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:05:46,721 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:05:46,721 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:05:46,722 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-12-22 14:05:46,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4361b4b62/54371442a3304bc3861c58eb09e9c50d/FLAG06e7b7b02 [2021-12-22 14:05:47,341 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:05:47,341 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-12-22 14:05:47,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4361b4b62/54371442a3304bc3861c58eb09e9c50d/FLAG06e7b7b02 [2021-12-22 14:05:47,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4361b4b62/54371442a3304bc3861c58eb09e9c50d [2021-12-22 14:05:47,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:05:47,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:05:47,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:05:47,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:05:47,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:05:47,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:05:47" (1/1) ... [2021-12-22 14:05:47,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1767b119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:47, skipping insertion in model container [2021-12-22 14:05:47,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:05:47" (1/1) ... [2021-12-22 14:05:47,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:05:47,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:05:48,353 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-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-12-22 14:05:48,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:05:48,414 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:05:48,595 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-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-12-22 14:05:48,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:05:48,691 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:05:48,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:48 WrapperNode [2021-12-22 14:05:48,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:05:48,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:05:48,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:05:48,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:05:48,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:48" (1/1) ... [2021-12-22 14:05:48,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:48" (1/1) ... [2021-12-22 14:05:48,825 INFO L137 Inliner]: procedures = 133, calls = 733, calls flagged for inlining = 54, calls inlined = 44, statements flattened = 1375 [2021-12-22 14:05:48,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:05:48,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:05:48,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:05:48,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:05:48,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:48" (1/1) ... [2021-12-22 14:05:48,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:48" (1/1) ... [2021-12-22 14:05:48,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:48" (1/1) ... [2021-12-22 14:05:48,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:48" (1/1) ... [2021-12-22 14:05:48,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:48" (1/1) ... [2021-12-22 14:05:48,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:48" (1/1) ... [2021-12-22 14:05:48,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:48" (1/1) ... [2021-12-22 14:05:48,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:05:48,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:05:48,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:05:48,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:05:48,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:48" (1/1) ... [2021-12-22 14:05:48,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:05:48,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:05:48,943 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) [2021-12-22 14:05:48,945 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 [2021-12-22 14:05:48,967 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-12-22 14:05:48,967 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-12-22 14:05:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_init [2021-12-22 14:05:48,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_init [2021-12-22 14:05:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:05:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-22 14:05:48,969 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-22 14:05:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:05:48,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:05:48,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:05:48,970 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-12-22 14:05:48,970 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-12-22 14:05:48,970 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_control_cmd [2021-12-22 14:05:48,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_control_cmd [2021-12-22 14:05:48,970 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-22 14:05:48,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-22 14:05:48,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:05:48,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:05:48,971 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_exit [2021-12-22 14:05:48,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_exit [2021-12-22 14:05:48,971 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2021-12-22 14:05:48,971 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2021-12-22 14:05:48,971 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:05:48,971 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:05:48,971 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2021-12-22 14:05:48,971 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2021-12-22 14:05:48,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:05:48,972 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-22 14:05:48,972 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-22 14:05:48,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2021-12-22 14:05:48,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2021-12-22 14:05:48,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-22 14:05:48,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-22 14:05:48,972 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-22 14:05:48,972 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-22 14:05:48,973 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_command_msg [2021-12-22 14:05:48,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_command_msg [2021-12-22 14:05:48,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:05:48,973 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2021-12-22 14:05:48,973 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2021-12-22 14:05:48,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:05:48,974 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-22 14:05:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-22 14:05:48,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:05:48,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:05:48,974 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_write_mode [2021-12-22 14:05:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_write_mode [2021-12-22 14:05:48,974 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-12-22 14:05:48,974 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-12-22 14:05:48,974 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2021-12-22 14:05:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2021-12-22 14:05:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:05:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-12-22 14:05:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-12-22 14:05:48,975 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-22 14:05:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-22 14:05:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2021-12-22 14:05:48,976 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2021-12-22 14:05:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-12-22 14:05:48,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-12-22 14:05:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:05:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:05:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-22 14:05:48,977 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-22 14:05:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-12-22 14:05:48,978 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-12-22 14:05:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-22 14:05:48,978 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-22 14:05:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2021-12-22 14:05:48,978 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2021-12-22 14:05:48,978 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-22 14:05:48,979 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-22 14:05:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-22 14:05:48,979 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-22 14:05:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2021-12-22 14:05:48,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2021-12-22 14:05:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2021-12-22 14:05:48,979 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2021-12-22 14:05:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:05:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2021-12-22 14:05:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2021-12-22 14:05:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-22 14:05:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-22 14:05:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:05:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:05:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:05:49,253 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:05:49,254 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:05:49,481 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2021-12-22 14:05:49,575 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 14:05:50,807 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2021-12-22 14:05:50,807 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2021-12-22 14:05:50,853 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:05:50,865 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:05:50,867 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-22 14:05:50,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:05:50 BoogieIcfgContainer [2021-12-22 14:05:50,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:05:50,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:05:50,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:05:50,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:05:50,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:05:47" (1/3) ... [2021-12-22 14:05:50,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3846062e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:05:50, skipping insertion in model container [2021-12-22 14:05:50,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:48" (2/3) ... [2021-12-22 14:05:50,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3846062e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:05:50, skipping insertion in model container [2021-12-22 14:05:50,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:05:50" (3/3) ... [2021-12-22 14:05:50,874 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-12-22 14:05:50,879 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:05:50,880 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:05:50,917 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:05:50,923 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 14:05:50,923 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:05:50,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 431 states, 304 states have (on average 1.3519736842105263) internal successors, (411), 316 states have internal predecessors, (411), 91 states have call successors, (91), 35 states have call predecessors, (91), 34 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2021-12-22 14:05:50,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-22 14:05:50,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:05:50,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:05:50,948 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:05:50,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:05:50,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1517292025, now seen corresponding path program 1 times [2021-12-22 14:05:50,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:05:50,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714454002] [2021-12-22 14:05:50,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:05:50,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:05:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:51,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:05:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:51,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:05:51,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:05:51,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714454002] [2021-12-22 14:05:51,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714454002] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:05:51,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:05:51,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:05:51,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899064499] [2021-12-22 14:05:51,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:05:51,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:05:51,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:05:51,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:05:51,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:05:51,358 INFO L87 Difference]: Start difference. First operand has 431 states, 304 states have (on average 1.3519736842105263) internal successors, (411), 316 states have internal predecessors, (411), 91 states have call successors, (91), 35 states have call predecessors, (91), 34 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 14:05:51,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:05:51,511 INFO L93 Difference]: Finished difference Result 1253 states and 1768 transitions. [2021-12-22 14:05:51,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:05:51,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-12-22 14:05:51,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:05:51,532 INFO L225 Difference]: With dead ends: 1253 [2021-12-22 14:05:51,533 INFO L226 Difference]: Without dead ends: 824 [2021-12-22 14:05:51,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:05:51,542 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 545 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:05:51,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 1229 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:05:51,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2021-12-22 14:05:51,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 820. [2021-12-22 14:05:51,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 581 states have (on average 1.2581755593803787) internal successors, (731), 593 states have internal predecessors, (731), 173 states have call successors, (173), 66 states have call predecessors, (173), 65 states have return successors, (172), 165 states have call predecessors, (172), 169 states have call successors, (172) [2021-12-22 14:05:51,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1076 transitions. [2021-12-22 14:05:51,645 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1076 transitions. Word has length 16 [2021-12-22 14:05:51,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:05:51,646 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 1076 transitions. [2021-12-22 14:05:51,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 14:05:51,646 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1076 transitions. [2021-12-22 14:05:51,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 14:05:51,646 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:05:51,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:05:51,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:05:51,647 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:05:51,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:05:51,649 INFO L85 PathProgramCache]: Analyzing trace with hash 208359179, now seen corresponding path program 1 times [2021-12-22 14:05:51,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:05:51,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903665611] [2021-12-22 14:05:51,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:05:51,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:05:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:51,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:05:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:51,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:05:51,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:05:51,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903665611] [2021-12-22 14:05:51,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903665611] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:05:51,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:05:51,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:05:51,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095390389] [2021-12-22 14:05:51,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:05:51,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:05:51,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:05:51,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:05:51,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:05:51,756 INFO L87 Difference]: Start difference. First operand 820 states and 1076 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 14:05:51,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:05:51,805 INFO L93 Difference]: Finished difference Result 2433 states and 3207 transitions. [2021-12-22 14:05:51,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:05:51,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-22 14:05:51,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:05:51,812 INFO L225 Difference]: With dead ends: 2433 [2021-12-22 14:05:51,813 INFO L226 Difference]: Without dead ends: 1617 [2021-12-22 14:05:51,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:05:51,816 INFO L933 BasicCegarLoop]: 630 mSDtfsCounter, 535 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:05:51,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 1161 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:05:51,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2021-12-22 14:05:51,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1610. [2021-12-22 14:05:51,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1141 states have (on average 1.2541630148992111) internal successors, (1431), 1160 states have internal predecessors, (1431), 340 states have call successors, (340), 129 states have call predecessors, (340), 128 states have return successors, (346), 328 states have call predecessors, (346), 336 states have call successors, (346) [2021-12-22 14:05:51,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2117 transitions. [2021-12-22 14:05:51,892 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2117 transitions. Word has length 17 [2021-12-22 14:05:51,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:05:51,892 INFO L470 AbstractCegarLoop]: Abstraction has 1610 states and 2117 transitions. [2021-12-22 14:05:51,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 14:05:51,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2117 transitions. [2021-12-22 14:05:51,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-22 14:05:51,899 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:05:51,899 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 14:05:51,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:05:51,900 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:05:51,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:05:51,906 INFO L85 PathProgramCache]: Analyzing trace with hash 26582145, now seen corresponding path program 1 times [2021-12-22 14:05:51,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:05:51,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864631570] [2021-12-22 14:05:51,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:05:51,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:05:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:52,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:05:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:52,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 14:05:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:52,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 14:05:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:52,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-22 14:05:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:52,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 14:05:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:52,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:05:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:52,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:05:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:52,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-22 14:05:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:52,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-22 14:05:52,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:05:52,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864631570] [2021-12-22 14:05:52,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864631570] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:05:52,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:05:52,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:05:52,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217511897] [2021-12-22 14:05:52,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:05:52,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:05:52,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:05:52,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:05:52,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:05:52,110 INFO L87 Difference]: Start difference. First operand 1610 states and 2117 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 14:05:55,425 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:05:55,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:05:55,458 INFO L93 Difference]: Finished difference Result 3324 states and 4411 transitions. [2021-12-22 14:05:55,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 14:05:55,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2021-12-22 14:05:55,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:05:55,468 INFO L225 Difference]: With dead ends: 3324 [2021-12-22 14:05:55,468 INFO L226 Difference]: Without dead ends: 1722 [2021-12-22 14:05:55,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:05:55,472 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 235 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:05:55,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 2223 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-22 14:05:55,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2021-12-22 14:05:55,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1610. [2021-12-22 14:05:55,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1141 states have (on average 1.2532865907099036) internal successors, (1430), 1160 states have internal predecessors, (1430), 340 states have call successors, (340), 129 states have call predecessors, (340), 128 states have return successors, (346), 328 states have call predecessors, (346), 336 states have call successors, (346) [2021-12-22 14:05:55,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2116 transitions. [2021-12-22 14:05:55,532 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2116 transitions. Word has length 71 [2021-12-22 14:05:55,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:05:55,532 INFO L470 AbstractCegarLoop]: Abstraction has 1610 states and 2116 transitions. [2021-12-22 14:05:55,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 14:05:55,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2116 transitions. [2021-12-22 14:05:55,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-22 14:05:55,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:05:55,536 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 14:05:55,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:05:55,537 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:05:55,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:05:55,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2146869344, now seen corresponding path program 1 times [2021-12-22 14:05:55,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:05:55,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241878072] [2021-12-22 14:05:55,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:05:55,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:05:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:55,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:05:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:55,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 14:05:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:55,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 14:05:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:55,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-22 14:05:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:55,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 14:05:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:55,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:05:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:55,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:05:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:55,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-22 14:05:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-22 14:05:55,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:05:55,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241878072] [2021-12-22 14:05:55,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241878072] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:05:55,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:05:55,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:05:55,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125494169] [2021-12-22 14:05:55,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:05:55,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:05:55,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:05:55,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:05:55,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:05:55,707 INFO L87 Difference]: Start difference. First operand 1610 states and 2116 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 14:05:58,543 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:05:58,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:05:58,585 INFO L93 Difference]: Finished difference Result 4036 states and 5567 transitions. [2021-12-22 14:05:58,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:05:58,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2021-12-22 14:05:58,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:05:58,595 INFO L225 Difference]: With dead ends: 4036 [2021-12-22 14:05:58,596 INFO L226 Difference]: Without dead ends: 2437 [2021-12-22 14:05:58,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:05:58,608 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 437 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:05:58,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 1454 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-22 14:05:58,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2021-12-22 14:05:58,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 2313. [2021-12-22 14:05:58,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 1640 states have (on average 1.2939024390243903) internal successors, (2122), 1675 states have internal predecessors, (2122), 544 states have call successors, (544), 129 states have call predecessors, (544), 128 states have return successors, (558), 524 states have call predecessors, (558), 540 states have call successors, (558) [2021-12-22 14:05:58,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 3224 transitions. [2021-12-22 14:05:58,686 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 3224 transitions. Word has length 71 [2021-12-22 14:05:58,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:05:58,687 INFO L470 AbstractCegarLoop]: Abstraction has 2313 states and 3224 transitions. [2021-12-22 14:05:58,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-22 14:05:58,687 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 3224 transitions. [2021-12-22 14:05:58,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-22 14:05:58,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:05:58,689 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 14:05:58,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:05:58,690 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:05:58,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:05:58,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1152569613, now seen corresponding path program 1 times [2021-12-22 14:05:58,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:05:58,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522623134] [2021-12-22 14:05:58,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:05:58,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:05:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:05:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:05:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 14:05:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:05:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:05:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 14:05:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 14:05:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:05:58,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:05:58,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522623134] [2021-12-22 14:05:58,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522623134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:05:58,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:05:58,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:05:58,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103627278] [2021-12-22 14:05:58,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:05:58,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:05:58,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:05:58,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:05:58,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:05:58,842 INFO L87 Difference]: Start difference. First operand 2313 states and 3224 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-22 14:05:59,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:05:59,679 INFO L93 Difference]: Finished difference Result 6341 states and 9294 transitions. [2021-12-22 14:05:59,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:05:59,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2021-12-22 14:05:59,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:05:59,699 INFO L225 Difference]: With dead ends: 6341 [2021-12-22 14:05:59,700 INFO L226 Difference]: Without dead ends: 4040 [2021-12-22 14:05:59,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:05:59,707 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 564 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:05:59,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 2776 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 14:05:59,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-12-22 14:05:59,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 2347. [2021-12-22 14:05:59,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2347 states, 1668 states have (on average 1.290167865707434) internal successors, (2152), 1705 states have internal predecessors, (2152), 544 states have call successors, (544), 129 states have call predecessors, (544), 134 states have return successors, (580), 528 states have call predecessors, (580), 540 states have call successors, (580) [2021-12-22 14:05:59,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 3276 transitions. [2021-12-22 14:05:59,807 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 3276 transitions. Word has length 68 [2021-12-22 14:05:59,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:05:59,808 INFO L470 AbstractCegarLoop]: Abstraction has 2347 states and 3276 transitions. [2021-12-22 14:05:59,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-22 14:05:59,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 3276 transitions. [2021-12-22 14:05:59,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-22 14:05:59,811 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:05:59,811 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 14:05:59,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:05:59,811 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:05:59,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:05:59,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1776712988, now seen corresponding path program 1 times [2021-12-22 14:05:59,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:05:59,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009917572] [2021-12-22 14:05:59,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:05:59,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:05:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:59,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:05:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:05:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:59,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 14:05:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:59,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:05:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:59,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:05:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:59,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:05:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:59,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:05:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:05:59,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:05:59,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009917572] [2021-12-22 14:05:59,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009917572] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:05:59,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:05:59,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:05:59,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666291716] [2021-12-22 14:05:59,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:05:59,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:05:59,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:05:59,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:05:59,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:05:59,948 INFO L87 Difference]: Start difference. First operand 2347 states and 3276 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-22 14:06:00,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:00,704 INFO L93 Difference]: Finished difference Result 5919 states and 8590 transitions. [2021-12-22 14:06:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:06:00,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 69 [2021-12-22 14:06:00,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:00,722 INFO L225 Difference]: With dead ends: 5919 [2021-12-22 14:06:00,723 INFO L226 Difference]: Without dead ends: 3584 [2021-12-22 14:06:00,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:06:00,731 INFO L933 BasicCegarLoop]: 812 mSDtfsCounter, 453 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:00,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 2645 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 14:06:00,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2021-12-22 14:06:00,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 2363. [2021-12-22 14:06:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 1684 states have (on average 1.2874109263657958) internal successors, (2168), 1721 states have internal predecessors, (2168), 544 states have call successors, (544), 129 states have call predecessors, (544), 134 states have return successors, (580), 528 states have call predecessors, (580), 540 states have call successors, (580) [2021-12-22 14:06:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3292 transitions. [2021-12-22 14:06:00,833 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3292 transitions. Word has length 69 [2021-12-22 14:06:00,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:00,833 INFO L470 AbstractCegarLoop]: Abstraction has 2363 states and 3292 transitions. [2021-12-22 14:06:00,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-22 14:06:00,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3292 transitions. [2021-12-22 14:06:00,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-22 14:06:00,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:00,836 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 14:06:00,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 14:06:00,837 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:00,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:00,837 INFO L85 PathProgramCache]: Analyzing trace with hash 676145405, now seen corresponding path program 1 times [2021-12-22 14:06:00,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:00,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757549569] [2021-12-22 14:06:00,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:00,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:06:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 14:06:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:01,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:01,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:06:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:01,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:06:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:01,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:06:01,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:01,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757549569] [2021-12-22 14:06:01,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757549569] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:06:01,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:06:01,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 14:06:01,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671410969] [2021-12-22 14:06:01,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:06:01,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 14:06:01,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:01,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 14:06:01,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:06:01,058 INFO L87 Difference]: Start difference. First operand 2363 states and 3292 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-22 14:06:02,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:02,016 INFO L93 Difference]: Finished difference Result 3619 states and 5113 transitions. [2021-12-22 14:06:02,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 14:06:02,017 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 69 [2021-12-22 14:06:02,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:02,029 INFO L225 Difference]: With dead ends: 3619 [2021-12-22 14:06:02,029 INFO L226 Difference]: Without dead ends: 2425 [2021-12-22 14:06:02,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-12-22 14:06:02,034 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 117 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 3216 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:02,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 3216 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 14:06:02,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-12-22 14:06:02,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2377. [2021-12-22 14:06:02,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2377 states, 1694 states have (on average 1.2845336481700118) internal successors, (2176), 1731 states have internal predecessors, (2176), 544 states have call successors, (544), 129 states have call predecessors, (544), 138 states have return successors, (592), 532 states have call predecessors, (592), 540 states have call successors, (592) [2021-12-22 14:06:02,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2377 states to 2377 states and 3312 transitions. [2021-12-22 14:06:02,112 INFO L78 Accepts]: Start accepts. Automaton has 2377 states and 3312 transitions. Word has length 69 [2021-12-22 14:06:02,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:02,113 INFO L470 AbstractCegarLoop]: Abstraction has 2377 states and 3312 transitions. [2021-12-22 14:06:02,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-22 14:06:02,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2377 states and 3312 transitions. [2021-12-22 14:06:02,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-22 14:06:02,115 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:02,115 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 14:06:02,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 14:06:02,115 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:02,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:02,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1333958436, now seen corresponding path program 1 times [2021-12-22 14:06:02,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:02,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882454423] [2021-12-22 14:06:02,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:02,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:06:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 14:06:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:06:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:06:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:06:02,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:02,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882454423] [2021-12-22 14:06:02,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882454423] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:06:02,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:06:02,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 14:06:02,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687422824] [2021-12-22 14:06:02,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:06:02,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 14:06:02,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:02,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 14:06:02,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-22 14:06:02,289 INFO L87 Difference]: Start difference. First operand 2377 states and 3312 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-22 14:06:03,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:03,352 INFO L93 Difference]: Finished difference Result 5577 states and 8014 transitions. [2021-12-22 14:06:03,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 14:06:03,352 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 69 [2021-12-22 14:06:03,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:03,366 INFO L225 Difference]: With dead ends: 5577 [2021-12-22 14:06:03,367 INFO L226 Difference]: Without dead ends: 3212 [2021-12-22 14:06:03,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-22 14:06:03,373 INFO L933 BasicCegarLoop]: 906 mSDtfsCounter, 448 mSDsluCounter, 6579 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 7485 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:03,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 7485 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 14:06:03,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3212 states. [2021-12-22 14:06:03,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3212 to 2381. [2021-12-22 14:06:03,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 1698 states have (on average 1.28150765606596) internal successors, (2176), 1733 states have internal predecessors, (2176), 544 states have call successors, (544), 129 states have call predecessors, (544), 138 states have return successors, (592), 534 states have call predecessors, (592), 540 states have call successors, (592) [2021-12-22 14:06:03,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 3312 transitions. [2021-12-22 14:06:03,465 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 3312 transitions. Word has length 69 [2021-12-22 14:06:03,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:03,465 INFO L470 AbstractCegarLoop]: Abstraction has 2381 states and 3312 transitions. [2021-12-22 14:06:03,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-22 14:06:03,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 3312 transitions. [2021-12-22 14:06:03,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-22 14:06:03,467 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:03,467 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 14:06:03,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 14:06:03,468 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:03,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:03,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1804654053, now seen corresponding path program 1 times [2021-12-22 14:06:03,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:03,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70043254] [2021-12-22 14:06:03,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:03,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:03,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:03,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:06:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:03,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 14:06:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:03,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:03,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:03,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:06:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:03,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:03,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:03,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-22 14:06:03,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:03,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70043254] [2021-12-22 14:06:03,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70043254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:06:03,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:06:03,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 14:06:03,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407049678] [2021-12-22 14:06:03,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:06:03,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 14:06:03,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:03,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 14:06:03,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:06:03,627 INFO L87 Difference]: Start difference. First operand 2381 states and 3312 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-22 14:06:04,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:04,649 INFO L93 Difference]: Finished difference Result 5739 states and 8248 transitions. [2021-12-22 14:06:04,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 14:06:04,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 75 [2021-12-22 14:06:04,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:04,664 INFO L225 Difference]: With dead ends: 5739 [2021-12-22 14:06:04,665 INFO L226 Difference]: Without dead ends: 3370 [2021-12-22 14:06:04,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:06:04,673 INFO L933 BasicCegarLoop]: 814 mSDtfsCounter, 397 mSDsluCounter, 3186 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:04,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 4000 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 14:06:04,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2021-12-22 14:06:04,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 2179. [2021-12-22 14:06:04,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2179 states, 1560 states have (on average 1.2717948717948717) internal successors, (1984), 1579 states have internal predecessors, (1984), 480 states have call successors, (480), 127 states have call predecessors, (480), 138 states have return successors, (532), 480 states have call predecessors, (532), 476 states have call successors, (532) [2021-12-22 14:06:04,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2179 states to 2179 states and 2996 transitions. [2021-12-22 14:06:04,769 INFO L78 Accepts]: Start accepts. Automaton has 2179 states and 2996 transitions. Word has length 75 [2021-12-22 14:06:04,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:04,769 INFO L470 AbstractCegarLoop]: Abstraction has 2179 states and 2996 transitions. [2021-12-22 14:06:04,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-22 14:06:04,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states and 2996 transitions. [2021-12-22 14:06:04,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-22 14:06:04,771 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:04,772 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 14:06:04,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 14:06:04,772 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:04,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:04,772 INFO L85 PathProgramCache]: Analyzing trace with hash -506709307, now seen corresponding path program 1 times [2021-12-22 14:06:04,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:04,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519974499] [2021-12-22 14:06:04,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:04,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:04,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:04,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:06:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:04,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 14:06:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:04,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:04,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:04,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:06:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:04,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:04,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-22 14:06:04,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:04,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519974499] [2021-12-22 14:06:04,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519974499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:06:04,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:06:04,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 14:06:04,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691608975] [2021-12-22 14:06:04,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:06:04,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 14:06:04,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:04,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 14:06:04,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:06:04,946 INFO L87 Difference]: Start difference. First operand 2179 states and 2996 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 6 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-22 14:06:06,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:06,934 INFO L93 Difference]: Finished difference Result 3452 states and 4818 transitions. [2021-12-22 14:06:06,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 14:06:06,935 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 6 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) Word has length 75 [2021-12-22 14:06:06,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:06,956 INFO L225 Difference]: With dead ends: 3452 [2021-12-22 14:06:06,956 INFO L226 Difference]: Without dead ends: 3447 [2021-12-22 14:06:06,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-12-22 14:06:06,958 INFO L933 BasicCegarLoop]: 919 mSDtfsCounter, 2408 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 1156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2521 SdHoareTripleChecker+Valid, 2335 SdHoareTripleChecker+Invalid, 2699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1156 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:06,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2521 Valid, 2335 Invalid, 2699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1156 Valid, 1543 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-22 14:06:06,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-12-22 14:06:07,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 3363. [2021-12-22 14:06:07,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 2405 states have (on average 1.2752598752598752) internal successors, (3067), 2440 states have internal predecessors, (3067), 748 states have call successors, (748), 189 states have call predecessors, (748), 209 states have return successors, (870), 749 states have call predecessors, (870), 744 states have call successors, (870) [2021-12-22 14:06:07,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 4685 transitions. [2021-12-22 14:06:07,091 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 4685 transitions. Word has length 75 [2021-12-22 14:06:07,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:07,092 INFO L470 AbstractCegarLoop]: Abstraction has 3363 states and 4685 transitions. [2021-12-22 14:06:07,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 6 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-22 14:06:07,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 4685 transitions. [2021-12-22 14:06:07,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-22 14:06:07,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:07,094 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 14:06:07,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 14:06:07,095 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:07,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:07,095 INFO L85 PathProgramCache]: Analyzing trace with hash -418091033, now seen corresponding path program 1 times [2021-12-22 14:06:07,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:07,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379759688] [2021-12-22 14:06:07,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:07,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:07,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:07,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:06:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:07,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 14:06:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:07,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:06:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:07,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:06:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:07,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:06:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:07,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:07,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:07,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 14:06:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:07,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:07,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:07,267 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-22 14:06:07,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:07,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379759688] [2021-12-22 14:06:07,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379759688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:06:07,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:06:07,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 14:06:07,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163000396] [2021-12-22 14:06:07,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:06:07,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 14:06:07,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:07,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 14:06:07,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:06:07,269 INFO L87 Difference]: Start difference. First operand 3363 states and 4685 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-22 14:06:08,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:08,247 INFO L93 Difference]: Finished difference Result 7643 states and 10959 transitions. [2021-12-22 14:06:08,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:06:08,248 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2021-12-22 14:06:08,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:08,259 INFO L225 Difference]: With dead ends: 7643 [2021-12-22 14:06:08,260 INFO L226 Difference]: Without dead ends: 4292 [2021-12-22 14:06:08,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-12-22 14:06:08,267 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 599 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:08,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [666 Valid, 3103 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 14:06:08,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4292 states. [2021-12-22 14:06:08,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4292 to 2826. [2021-12-22 14:06:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2826 states, 2031 states have (on average 1.2737567700640078) internal successors, (2587), 2057 states have internal predecessors, (2587), 624 states have call successors, (624), 153 states have call predecessors, (624), 170 states have return successors, (730), 631 states have call predecessors, (730), 620 states have call successors, (730) [2021-12-22 14:06:08,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 3941 transitions. [2021-12-22 14:06:08,381 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 3941 transitions. Word has length 94 [2021-12-22 14:06:08,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:08,381 INFO L470 AbstractCegarLoop]: Abstraction has 2826 states and 3941 transitions. [2021-12-22 14:06:08,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-22 14:06:08,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 3941 transitions. [2021-12-22 14:06:08,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-22 14:06:08,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:08,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:06:08,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 14:06:08,384 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:08,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:08,384 INFO L85 PathProgramCache]: Analyzing trace with hash 564700489, now seen corresponding path program 1 times [2021-12-22 14:06:08,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:08,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701393713] [2021-12-22 14:06:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:08,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:08,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:08,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:06:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:08,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 14:06:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:08,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:06:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:08,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:06:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:08,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:06:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:08,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:08,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:08,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 14:06:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:08,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 14:06:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:08,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:06:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:06:08,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:08,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701393713] [2021-12-22 14:06:08,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701393713] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:06:08,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:06:08,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-22 14:06:08,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649901464] [2021-12-22 14:06:08,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:06:08,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 14:06:08,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:08,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 14:06:08,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-22 14:06:08,614 INFO L87 Difference]: Start difference. First operand 2826 states and 3941 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-22 14:06:10,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:10,086 INFO L93 Difference]: Finished difference Result 6776 states and 9771 transitions. [2021-12-22 14:06:10,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 14:06:10,086 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 92 [2021-12-22 14:06:10,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:10,098 INFO L225 Difference]: With dead ends: 6776 [2021-12-22 14:06:10,099 INFO L226 Difference]: Without dead ends: 4370 [2021-12-22 14:06:10,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-12-22 14:06:10,107 INFO L933 BasicCegarLoop]: 804 mSDtfsCounter, 433 mSDsluCounter, 6179 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 6983 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:10,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [519 Valid, 6983 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 14:06:10,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4370 states. [2021-12-22 14:06:10,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4370 to 2826. [2021-12-22 14:06:10,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2826 states, 2031 states have (on average 1.2698178237321516) internal successors, (2579), 2057 states have internal predecessors, (2579), 624 states have call successors, (624), 153 states have call predecessors, (624), 170 states have return successors, (730), 631 states have call predecessors, (730), 620 states have call successors, (730) [2021-12-22 14:06:10,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 3933 transitions. [2021-12-22 14:06:10,263 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 3933 transitions. Word has length 92 [2021-12-22 14:06:10,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:10,263 INFO L470 AbstractCegarLoop]: Abstraction has 2826 states and 3933 transitions. [2021-12-22 14:06:10,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-22 14:06:10,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 3933 transitions. [2021-12-22 14:06:10,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-22 14:06:10,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:10,266 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:06:10,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 14:06:10,266 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:10,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:10,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1871827029, now seen corresponding path program 1 times [2021-12-22 14:06:10,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:10,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148239627] [2021-12-22 14:06:10,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:10,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:06:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 14:06:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:06:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 14:06:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-22 14:06:10,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:10,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148239627] [2021-12-22 14:06:10,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148239627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:06:10,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:06:10,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 14:06:10,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127778651] [2021-12-22 14:06:10,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:06:10,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 14:06:10,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:10,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 14:06:10,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:06:10,422 INFO L87 Difference]: Start difference. First operand 2826 states and 3933 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-22 14:06:11,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:11,184 INFO L93 Difference]: Finished difference Result 6262 states and 9007 transitions. [2021-12-22 14:06:11,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:06:11,184 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 87 [2021-12-22 14:06:11,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:11,195 INFO L225 Difference]: With dead ends: 6262 [2021-12-22 14:06:11,195 INFO L226 Difference]: Without dead ends: 3856 [2021-12-22 14:06:11,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:06:11,202 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 513 mSDsluCounter, 2322 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 3131 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:11,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 3131 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 14:06:11,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3856 states. [2021-12-22 14:06:11,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3856 to 2636. [2021-12-22 14:06:11,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 1899 states have (on average 1.2622432859399684) internal successors, (2397), 1911 states have internal predecessors, (2397), 568 states have call successors, (568), 151 states have call predecessors, (568), 168 states have return successors, (670), 585 states have call predecessors, (670), 564 states have call successors, (670) [2021-12-22 14:06:11,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3635 transitions. [2021-12-22 14:06:11,337 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3635 transitions. Word has length 87 [2021-12-22 14:06:11,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:11,338 INFO L470 AbstractCegarLoop]: Abstraction has 2636 states and 3635 transitions. [2021-12-22 14:06:11,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-22 14:06:11,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3635 transitions. [2021-12-22 14:06:11,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-22 14:06:11,342 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:11,342 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:06:11,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 14:06:11,343 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:11,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:11,343 INFO L85 PathProgramCache]: Analyzing trace with hash -205382314, now seen corresponding path program 1 times [2021-12-22 14:06:11,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:11,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827431607] [2021-12-22 14:06:11,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:11,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:11,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:11,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:06:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:11,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 14:06:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:11,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:11,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:11,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:06:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:11,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:11,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:11,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 14:06:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:11,544 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-22 14:06:11,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:11,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827431607] [2021-12-22 14:06:11,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827431607] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:06:11,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:06:11,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 14:06:11,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237843497] [2021-12-22 14:06:11,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:06:11,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 14:06:11,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:11,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 14:06:11,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:06:11,546 INFO L87 Difference]: Start difference. First operand 2636 states and 3635 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-22 14:06:12,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:12,438 INFO L93 Difference]: Finished difference Result 3905 states and 5433 transitions. [2021-12-22 14:06:12,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 14:06:12,438 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 87 [2021-12-22 14:06:12,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:12,445 INFO L225 Difference]: With dead ends: 3905 [2021-12-22 14:06:12,445 INFO L226 Difference]: Without dead ends: 2681 [2021-12-22 14:06:12,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-12-22 14:06:12,449 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 340 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:12,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2910 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 14:06:12,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-12-22 14:06:12,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2644. [2021-12-22 14:06:12,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 1907 states have (on average 1.261143156790771) internal successors, (2405), 1915 states have internal predecessors, (2405), 568 states have call successors, (568), 151 states have call predecessors, (568), 168 states have return successors, (670), 589 states have call predecessors, (670), 564 states have call successors, (670) [2021-12-22 14:06:12,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3643 transitions. [2021-12-22 14:06:12,570 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3643 transitions. Word has length 87 [2021-12-22 14:06:12,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:12,571 INFO L470 AbstractCegarLoop]: Abstraction has 2644 states and 3643 transitions. [2021-12-22 14:06:12,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-22 14:06:12,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3643 transitions. [2021-12-22 14:06:12,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-22 14:06:12,573 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:12,573 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 14:06:12,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 14:06:12,573 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:12,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:12,574 INFO L85 PathProgramCache]: Analyzing trace with hash 2079481141, now seen corresponding path program 1 times [2021-12-22 14:06:12,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:12,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688972841] [2021-12-22 14:06:12,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:12,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:12,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:12,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:06:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:12,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 14:06:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:12,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:12,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:12,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:06:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:12,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:12,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:12,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 14:06:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:12,688 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-22 14:06:12,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:12,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688972841] [2021-12-22 14:06:12,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688972841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:06:12,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:06:12,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:06:12,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78127119] [2021-12-22 14:06:12,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:06:12,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:06:12,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:12,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:06:12,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:06:12,690 INFO L87 Difference]: Start difference. First operand 2644 states and 3643 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-22 14:06:13,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:13,434 INFO L93 Difference]: Finished difference Result 4660 states and 6627 transitions. [2021-12-22 14:06:13,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:06:13,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 87 [2021-12-22 14:06:13,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:13,442 INFO L225 Difference]: With dead ends: 4660 [2021-12-22 14:06:13,443 INFO L226 Difference]: Without dead ends: 3432 [2021-12-22 14:06:13,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:06:13,448 INFO L933 BasicCegarLoop]: 832 mSDtfsCounter, 426 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:13,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 2186 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 14:06:13,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3432 states. [2021-12-22 14:06:13,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3432 to 2652. [2021-12-22 14:06:13,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 1915 states have (on average 1.2600522193211487) internal successors, (2413), 1923 states have internal predecessors, (2413), 568 states have call successors, (568), 151 states have call predecessors, (568), 168 states have return successors, (670), 589 states have call predecessors, (670), 564 states have call successors, (670) [2021-12-22 14:06:13,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3651 transitions. [2021-12-22 14:06:13,573 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3651 transitions. Word has length 87 [2021-12-22 14:06:13,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:13,574 INFO L470 AbstractCegarLoop]: Abstraction has 2652 states and 3651 transitions. [2021-12-22 14:06:13,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-22 14:06:13,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3651 transitions. [2021-12-22 14:06:13,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-22 14:06:13,577 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:13,577 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 14:06:13,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 14:06:13,577 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:13,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:13,578 INFO L85 PathProgramCache]: Analyzing trace with hash 390816807, now seen corresponding path program 1 times [2021-12-22 14:06:13,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:13,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820252563] [2021-12-22 14:06:13,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:13,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:13,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:13,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 14:06:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:13,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 14:06:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:13,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-22 14:06:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:13,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 14:06:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:13,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:06:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:13,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 14:06:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:13,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:13,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:06:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:13,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-22 14:06:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:13,698 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-22 14:06:13,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:13,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820252563] [2021-12-22 14:06:13,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820252563] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:06:13,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:06:13,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:06:13,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040373255] [2021-12-22 14:06:13,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:06:13,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:06:13,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:13,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:06:13,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:06:13,702 INFO L87 Difference]: Start difference. First operand 2652 states and 3651 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-22 14:06:15,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:15,575 INFO L93 Difference]: Finished difference Result 5424 states and 7473 transitions. [2021-12-22 14:06:15,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 14:06:15,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2021-12-22 14:06:15,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:15,585 INFO L225 Difference]: With dead ends: 5424 [2021-12-22 14:06:15,586 INFO L226 Difference]: Without dead ends: 2778 [2021-12-22 14:06:15,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:06:15,593 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 247 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:15,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 1821 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-22 14:06:15,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2021-12-22 14:06:15,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 2664. [2021-12-22 14:06:15,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2664 states, 1923 states have (on average 1.2584503380135206) internal successors, (2420), 1931 states have internal predecessors, (2420), 570 states have call successors, (570), 153 states have call predecessors, (570), 170 states have return successors, (672), 591 states have call predecessors, (672), 566 states have call successors, (672) [2021-12-22 14:06:15,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 3662 transitions. [2021-12-22 14:06:15,736 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 3662 transitions. Word has length 94 [2021-12-22 14:06:15,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:15,737 INFO L470 AbstractCegarLoop]: Abstraction has 2664 states and 3662 transitions. [2021-12-22 14:06:15,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-22 14:06:15,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 3662 transitions. [2021-12-22 14:06:15,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-22 14:06:15,739 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:15,739 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:06:15,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 14:06:15,739 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:15,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:15,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1118734186, now seen corresponding path program 1 times [2021-12-22 14:06:15,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:15,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205804556] [2021-12-22 14:06:15,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:15,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:15,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:15,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:06:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:15,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 14:06:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:15,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:15,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:15,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:06:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:15,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:15,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:15,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 14:06:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-22 14:06:15,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:15,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205804556] [2021-12-22 14:06:15,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205804556] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:06:15,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:06:15,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 14:06:15,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970070217] [2021-12-22 14:06:15,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:06:15,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 14:06:15,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:15,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 14:06:15,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:06:15,914 INFO L87 Difference]: Start difference. First operand 2664 states and 3662 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 6 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2021-12-22 14:06:17,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:17,786 INFO L93 Difference]: Finished difference Result 3982 states and 5507 transitions. [2021-12-22 14:06:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 14:06:17,787 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 6 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 89 [2021-12-22 14:06:17,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:17,794 INFO L225 Difference]: With dead ends: 3982 [2021-12-22 14:06:17,794 INFO L226 Difference]: Without dead ends: 3979 [2021-12-22 14:06:17,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-12-22 14:06:17,795 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 2074 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 1896 mSolverCounterSat, 910 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2202 SdHoareTripleChecker+Valid, 2923 SdHoareTripleChecker+Invalid, 2806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 910 IncrementalHoareTripleChecker+Valid, 1896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:17,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2202 Valid, 2923 Invalid, 2806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [910 Valid, 1896 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-22 14:06:17,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2021-12-22 14:06:17,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3879. [2021-12-22 14:06:17,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3879 states, 2797 states have (on average 1.2609939220593493) internal successors, (3527), 2814 states have internal predecessors, (3527), 838 states have call successors, (838), 215 states have call predecessors, (838), 243 states have return successors, (1014), 869 states have call predecessors, (1014), 834 states have call successors, (1014) [2021-12-22 14:06:17,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3879 states to 3879 states and 5379 transitions. [2021-12-22 14:06:17,942 INFO L78 Accepts]: Start accepts. Automaton has 3879 states and 5379 transitions. Word has length 89 [2021-12-22 14:06:17,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:17,942 INFO L470 AbstractCegarLoop]: Abstraction has 3879 states and 5379 transitions. [2021-12-22 14:06:17,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 6 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2021-12-22 14:06:17,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3879 states and 5379 transitions. [2021-12-22 14:06:17,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-22 14:06:17,944 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:17,944 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 14:06:17,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 14:06:17,944 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:17,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:17,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1748979270, now seen corresponding path program 1 times [2021-12-22 14:06:17,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:17,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157801704] [2021-12-22 14:06:17,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:17,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:18,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:18,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:06:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:18,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 14:06:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:18,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:18,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:18,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:06:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:18,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:18,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:18,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 14:06:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:18,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 14:06:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:18,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 14:06:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:18,198 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-22 14:06:18,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:18,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157801704] [2021-12-22 14:06:18,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157801704] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:06:18,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722334228] [2021-12-22 14:06:18,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:18,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:06:18,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:06:18,204 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) [2021-12-22 14:06:18,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 14:06:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:18,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-22 14:06:18,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:06:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-22 14:06:18,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:06:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-22 14:06:19,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722334228] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:06:19,164 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 14:06:19,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 26 [2021-12-22 14:06:19,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794581777] [2021-12-22 14:06:19,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 14:06:19,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-22 14:06:19,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:19,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-22 14:06:19,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=596, Unknown=0, NotChecked=0, Total=650 [2021-12-22 14:06:19,166 INFO L87 Difference]: Start difference. First operand 3879 states and 5379 transitions. Second operand has 26 states, 26 states have (on average 3.769230769230769) internal successors, (98), 16 states have internal predecessors, (98), 5 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (19), 10 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-22 14:06:22,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:22,535 INFO L93 Difference]: Finished difference Result 11133 states and 16255 transitions. [2021-12-22 14:06:22,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-22 14:06:22,536 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.769230769230769) internal successors, (98), 16 states have internal predecessors, (98), 5 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (19), 10 states have call predecessors, (19), 5 states have call successors, (19) Word has length 94 [2021-12-22 14:06:22,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:22,559 INFO L225 Difference]: With dead ends: 11133 [2021-12-22 14:06:22,560 INFO L226 Difference]: Without dead ends: 7266 [2021-12-22 14:06:22,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=1715, Unknown=0, NotChecked=0, Total=1892 [2021-12-22 14:06:22,571 INFO L933 BasicCegarLoop]: 932 mSDtfsCounter, 1009 mSDsluCounter, 16539 mSDsCounter, 0 mSdLazyCounter, 3952 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 17471 SdHoareTripleChecker+Invalid, 4520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 3952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:22,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 17471 Invalid, 4520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 3952 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-22 14:06:22,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7266 states. [2021-12-22 14:06:22,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7266 to 3833. [2021-12-22 14:06:22,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 2762 states have (on average 1.2617668356263576) internal successors, (3485), 2796 states have internal predecessors, (3485), 834 states have call successors, (834), 215 states have call predecessors, (834), 236 states have return successors, (952), 835 states have call predecessors, (952), 828 states have call successors, (952) [2021-12-22 14:06:22,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 5271 transitions. [2021-12-22 14:06:22,774 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 5271 transitions. Word has length 94 [2021-12-22 14:06:22,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:22,775 INFO L470 AbstractCegarLoop]: Abstraction has 3833 states and 5271 transitions. [2021-12-22 14:06:22,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.769230769230769) internal successors, (98), 16 states have internal predecessors, (98), 5 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (19), 10 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-22 14:06:22,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 5271 transitions. [2021-12-22 14:06:22,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-22 14:06:22,776 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:22,777 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 14:06:22,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 14:06:22,998 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,SelfDestructingSolverStorable17 [2021-12-22 14:06:22,998 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:22,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:22,999 INFO L85 PathProgramCache]: Analyzing trace with hash -448437055, now seen corresponding path program 1 times [2021-12-22 14:06:22,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:22,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162906100] [2021-12-22 14:06:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:22,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:23,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:23,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:06:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:23,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 14:06:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:23,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:23,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:23,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:06:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:23,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:23,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:23,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 14:06:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:23,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 14:06:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:23,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 14:06:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-22 14:06:23,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:23,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162906100] [2021-12-22 14:06:23,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162906100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:06:23,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:06:23,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 14:06:23,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918151109] [2021-12-22 14:06:23,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:06:23,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 14:06:23,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:23,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 14:06:23,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-12-22 14:06:23,226 INFO L87 Difference]: Start difference. First operand 3833 states and 5271 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 9 states have internal predecessors, (67), 6 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-22 14:06:25,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:25,696 INFO L93 Difference]: Finished difference Result 10144 states and 13936 transitions. [2021-12-22 14:06:25,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 14:06:25,697 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 9 states have internal predecessors, (67), 6 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 96 [2021-12-22 14:06:25,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:25,718 INFO L225 Difference]: With dead ends: 10144 [2021-12-22 14:06:25,718 INFO L226 Difference]: Without dead ends: 8384 [2021-12-22 14:06:25,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-12-22 14:06:25,726 INFO L933 BasicCegarLoop]: 908 mSDtfsCounter, 1947 mSDsluCounter, 2868 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 890 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2061 SdHoareTripleChecker+Valid, 3776 SdHoareTripleChecker+Invalid, 3433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 890 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:25,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2061 Valid, 3776 Invalid, 3433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [890 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-22 14:06:25,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8384 states. [2021-12-22 14:06:26,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8384 to 8132. [2021-12-22 14:06:26,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8132 states, 5885 states have (on average 1.2677994902293968) internal successors, (7461), 5936 states have internal predecessors, (7461), 1737 states have call successors, (1737), 461 states have call predecessors, (1737), 509 states have return successors, (1983), 1758 states have call predecessors, (1983), 1731 states have call successors, (1983) [2021-12-22 14:06:26,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8132 states to 8132 states and 11181 transitions. [2021-12-22 14:06:26,132 INFO L78 Accepts]: Start accepts. Automaton has 8132 states and 11181 transitions. Word has length 96 [2021-12-22 14:06:26,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:26,132 INFO L470 AbstractCegarLoop]: Abstraction has 8132 states and 11181 transitions. [2021-12-22 14:06:26,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 9 states have internal predecessors, (67), 6 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-22 14:06:26,132 INFO L276 IsEmpty]: Start isEmpty. Operand 8132 states and 11181 transitions. [2021-12-22 14:06:26,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-22 14:06:26,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:26,134 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 14:06:26,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 14:06:26,135 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:26,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:26,135 INFO L85 PathProgramCache]: Analyzing trace with hash 832679025, now seen corresponding path program 1 times [2021-12-22 14:06:26,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:26,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580566547] [2021-12-22 14:06:26,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:26,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:26,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:26,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:06:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:26,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 14:06:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:26,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:26,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:26,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:06:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:26,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:26,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:26,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 14:06:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:26,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 14:06:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:26,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 14:06:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:26,315 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-22 14:06:26,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:26,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580566547] [2021-12-22 14:06:26,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580566547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:06:26,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:06:26,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 14:06:26,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126749791] [2021-12-22 14:06:26,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:06:26,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 14:06:26,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:26,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 14:06:26,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-22 14:06:26,317 INFO L87 Difference]: Start difference. First operand 8132 states and 11181 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-22 14:06:28,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:28,321 INFO L93 Difference]: Finished difference Result 17611 states and 24834 transitions. [2021-12-22 14:06:28,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 14:06:28,322 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2021-12-22 14:06:28,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:28,345 INFO L225 Difference]: With dead ends: 17611 [2021-12-22 14:06:28,346 INFO L226 Difference]: Without dead ends: 10847 [2021-12-22 14:06:28,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2021-12-22 14:06:28,357 INFO L933 BasicCegarLoop]: 811 mSDtfsCounter, 462 mSDsluCounter, 6849 mSDsCounter, 0 mSdLazyCounter, 1914 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 7660 SdHoareTripleChecker+Invalid, 2121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:28,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 7660 Invalid, 2121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1914 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 14:06:28,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10847 states. [2021-12-22 14:06:28,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10847 to 8126. [2021-12-22 14:06:28,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8126 states, 5879 states have (on average 1.2639904745705053) internal successors, (7431), 5933 states have internal predecessors, (7431), 1737 states have call successors, (1737), 461 states have call predecessors, (1737), 509 states have return successors, (1983), 1755 states have call predecessors, (1983), 1731 states have call successors, (1983) [2021-12-22 14:06:28,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8126 states to 8126 states and 11151 transitions. [2021-12-22 14:06:28,828 INFO L78 Accepts]: Start accepts. Automaton has 8126 states and 11151 transitions. Word has length 97 [2021-12-22 14:06:28,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:28,829 INFO L470 AbstractCegarLoop]: Abstraction has 8126 states and 11151 transitions. [2021-12-22 14:06:28,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-22 14:06:28,830 INFO L276 IsEmpty]: Start isEmpty. Operand 8126 states and 11151 transitions. [2021-12-22 14:06:28,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-22 14:06:28,833 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:28,833 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 14:06:28,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-22 14:06:28,833 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:28,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:28,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1118058599, now seen corresponding path program 1 times [2021-12-22 14:06:28,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:28,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385383648] [2021-12-22 14:06:28,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:28,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:28,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:28,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 14:06:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:28,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:06:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:28,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-22 14:06:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:28,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:06:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:28,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 14:06:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:28,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 14:06:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:29,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:29,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:29,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 14:06:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:29,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 14:06:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:29,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 14:06:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:29,018 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-22 14:06:29,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:29,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385383648] [2021-12-22 14:06:29,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385383648] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:06:29,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289239789] [2021-12-22 14:06:29,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:29,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:06:29,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:06:29,021 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) [2021-12-22 14:06:29,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 14:06:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:29,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 14:06:29,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:06:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-22 14:06:29,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:06:29,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289239789] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:06:29,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:06:29,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-22 14:06:29,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444762845] [2021-12-22 14:06:29,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:06:29,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:06:29,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:29,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:06:29,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:06:29,595 INFO L87 Difference]: Start difference. First operand 8126 states and 11151 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-22 14:06:29,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:29,916 INFO L93 Difference]: Finished difference Result 16288 states and 22354 transitions. [2021-12-22 14:06:29,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:06:29,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2021-12-22 14:06:29,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:29,935 INFO L225 Difference]: With dead ends: 16288 [2021-12-22 14:06:29,935 INFO L226 Difference]: Without dead ends: 8174 [2021-12-22 14:06:29,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:06:29,950 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 1 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:29,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1083 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:06:29,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8174 states. [2021-12-22 14:06:30,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8174 to 8158. [2021-12-22 14:06:30,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8158 states, 5911 states have (on average 1.2625613263407207) internal successors, (7463), 5965 states have internal predecessors, (7463), 1737 states have call successors, (1737), 461 states have call predecessors, (1737), 509 states have return successors, (1983), 1755 states have call predecessors, (1983), 1731 states have call successors, (1983) [2021-12-22 14:06:30,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8158 states to 8158 states and 11183 transitions. [2021-12-22 14:06:30,397 INFO L78 Accepts]: Start accepts. Automaton has 8158 states and 11183 transitions. Word has length 108 [2021-12-22 14:06:30,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:30,397 INFO L470 AbstractCegarLoop]: Abstraction has 8158 states and 11183 transitions. [2021-12-22 14:06:30,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-22 14:06:30,398 INFO L276 IsEmpty]: Start isEmpty. Operand 8158 states and 11183 transitions. [2021-12-22 14:06:30,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-22 14:06:30,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:30,400 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 14:06:30,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 14:06:30,613 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 [2021-12-22 14:06:30,613 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:30,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:30,613 INFO L85 PathProgramCache]: Analyzing trace with hash 920282283, now seen corresponding path program 1 times [2021-12-22 14:06:30,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:30,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918099370] [2021-12-22 14:06:30,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:30,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:06:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 14:06:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:06:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:06:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:06:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 14:06:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 14:06:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 14:06:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 14:06:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 14:06:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 14:06:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-22 14:06:30,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:30,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918099370] [2021-12-22 14:06:30,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918099370] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:06:30,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:06:30,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 14:06:30,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188906793] [2021-12-22 14:06:30,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:06:30,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 14:06:30,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:30,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 14:06:30,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:06:30,830 INFO L87 Difference]: Start difference. First operand 8158 states and 11183 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-22 14:06:35,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:35,547 INFO L93 Difference]: Finished difference Result 18980 states and 26789 transitions. [2021-12-22 14:06:35,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 14:06:35,552 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 120 [2021-12-22 14:06:35,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:35,581 INFO L225 Difference]: With dead ends: 18980 [2021-12-22 14:06:35,581 INFO L226 Difference]: Without dead ends: 12202 [2021-12-22 14:06:35,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-12-22 14:06:35,598 INFO L933 BasicCegarLoop]: 793 mSDtfsCounter, 505 mSDsluCounter, 3295 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 4088 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:35,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 4088 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-22 14:06:35,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12202 states. [2021-12-22 14:06:36,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12202 to 7987. [2021-12-22 14:06:36,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7987 states, 5818 states have (on average 1.2619456858026814) internal successors, (7342), 5860 states have internal predecessors, (7342), 1675 states have call successors, (1675), 445 states have call predecessors, (1675), 493 states have return successors, (1921), 1705 states have call predecessors, (1921), 1669 states have call successors, (1921) [2021-12-22 14:06:36,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7987 states to 7987 states and 10938 transitions. [2021-12-22 14:06:36,092 INFO L78 Accepts]: Start accepts. Automaton has 7987 states and 10938 transitions. Word has length 120 [2021-12-22 14:06:36,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:36,095 INFO L470 AbstractCegarLoop]: Abstraction has 7987 states and 10938 transitions. [2021-12-22 14:06:36,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-22 14:06:36,096 INFO L276 IsEmpty]: Start isEmpty. Operand 7987 states and 10938 transitions. [2021-12-22 14:06:36,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-22 14:06:36,098 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:36,098 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:06:36,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-22 14:06:36,099 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:36,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:36,099 INFO L85 PathProgramCache]: Analyzing trace with hash -2053204873, now seen corresponding path program 1 times [2021-12-22 14:06:36,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:36,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419338775] [2021-12-22 14:06:36,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:36,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:36,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:36,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:06:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:36,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 14:06:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:36,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:36,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:36,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:06:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:36,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:36,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:36,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 14:06:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:36,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 14:06:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:36,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 14:06:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-22 14:06:36,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:36,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419338775] [2021-12-22 14:06:36,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419338775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:06:36,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:06:36,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-22 14:06:36,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893016279] [2021-12-22 14:06:36,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:06:36,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-22 14:06:36,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:36,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-22 14:06:36,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-22 14:06:36,354 INFO L87 Difference]: Start difference. First operand 7987 states and 10938 transitions. Second operand has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-22 14:06:38,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:38,391 INFO L93 Difference]: Finished difference Result 15028 states and 21199 transitions. [2021-12-22 14:06:38,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-22 14:06:38,392 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) Word has length 104 [2021-12-22 14:06:38,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:38,415 INFO L225 Difference]: With dead ends: 15028 [2021-12-22 14:06:38,415 INFO L226 Difference]: Without dead ends: 10127 [2021-12-22 14:06:38,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2021-12-22 14:06:38,427 INFO L933 BasicCegarLoop]: 797 mSDtfsCounter, 559 mSDsluCounter, 6630 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 7427 SdHoareTripleChecker+Invalid, 1955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:38,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 7427 Invalid, 1955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 1643 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 14:06:38,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10127 states. [2021-12-22 14:06:38,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10127 to 7133. [2021-12-22 14:06:38,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7133 states, 5203 states have (on average 1.2588891024408995) internal successors, (6550), 5251 states have internal predecessors, (6550), 1490 states have call successors, (1490), 403 states have call predecessors, (1490), 439 states have return successors, (1669), 1502 states have call predecessors, (1669), 1484 states have call successors, (1669) [2021-12-22 14:06:38,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7133 states to 7133 states and 9709 transitions. [2021-12-22 14:06:38,839 INFO L78 Accepts]: Start accepts. Automaton has 7133 states and 9709 transitions. Word has length 104 [2021-12-22 14:06:38,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:38,840 INFO L470 AbstractCegarLoop]: Abstraction has 7133 states and 9709 transitions. [2021-12-22 14:06:38,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-22 14:06:38,840 INFO L276 IsEmpty]: Start isEmpty. Operand 7133 states and 9709 transitions. [2021-12-22 14:06:38,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-22 14:06:38,843 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:38,843 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 14:06:38,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-22 14:06:38,844 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:38,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:38,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1247847667, now seen corresponding path program 1 times [2021-12-22 14:06:38,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:38,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716932679] [2021-12-22 14:06:38,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:38,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:38,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:38,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 14:06:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:38,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:06:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:38,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-22 14:06:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:38,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:06:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:38,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 14:06:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:38,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 14:06:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:38,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:39,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:39,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 14:06:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:39,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 14:06:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:39,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 14:06:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:39,012 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-22 14:06:39,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:39,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716932679] [2021-12-22 14:06:39,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716932679] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:06:39,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875100716] [2021-12-22 14:06:39,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:39,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:06:39,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:06:39,015 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) [2021-12-22 14:06:39,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 14:06:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:39,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 1567 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 14:06:39,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:06:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-22 14:06:39,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:06:39,798 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-22 14:06:39,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875100716] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:06:39,798 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 14:06:39,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 13 [2021-12-22 14:06:39,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669710095] [2021-12-22 14:06:39,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 14:06:39,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 14:06:39,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:39,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 14:06:39,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-12-22 14:06:39,800 INFO L87 Difference]: Start difference. First operand 7133 states and 9709 transitions. Second operand has 13 states, 13 states have (on average 8.538461538461538) internal successors, (111), 9 states have internal predecessors, (111), 3 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-22 14:06:43,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:43,303 INFO L93 Difference]: Finished difference Result 14665 states and 19980 transitions. [2021-12-22 14:06:43,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 14:06:43,311 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.538461538461538) internal successors, (111), 9 states have internal predecessors, (111), 3 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 111 [2021-12-22 14:06:43,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:43,328 INFO L225 Difference]: With dead ends: 14665 [2021-12-22 14:06:43,328 INFO L226 Difference]: Without dead ends: 7538 [2021-12-22 14:06:43,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-12-22 14:06:43,340 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 243 mSDsluCounter, 3200 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 3729 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:43,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 3729 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-22 14:06:43,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7538 states. [2021-12-22 14:06:43,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7538 to 7268. [2021-12-22 14:06:43,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7268 states, 5338 states have (on average 1.252341701011615) internal successors, (6685), 5383 states have internal predecessors, (6685), 1490 states have call successors, (1490), 403 states have call predecessors, (1490), 439 states have return successors, (1667), 1505 states have call predecessors, (1667), 1484 states have call successors, (1667) [2021-12-22 14:06:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7268 states to 7268 states and 9842 transitions. [2021-12-22 14:06:43,711 INFO L78 Accepts]: Start accepts. Automaton has 7268 states and 9842 transitions. Word has length 111 [2021-12-22 14:06:43,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:43,712 INFO L470 AbstractCegarLoop]: Abstraction has 7268 states and 9842 transitions. [2021-12-22 14:06:43,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.538461538461538) internal successors, (111), 9 states have internal predecessors, (111), 3 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-22 14:06:43,712 INFO L276 IsEmpty]: Start isEmpty. Operand 7268 states and 9842 transitions. [2021-12-22 14:06:43,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-22 14:06:43,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:43,714 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 14:06:43,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 14:06:43,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:06:43,927 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:43,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:43,928 INFO L85 PathProgramCache]: Analyzing trace with hash 800394672, now seen corresponding path program 1 times [2021-12-22 14:06:43,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:43,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498075549] [2021-12-22 14:06:43,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:43,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:43,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:43,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:06:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:44,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 14:06:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:44,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:06:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:44,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:06:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:44,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:06:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:44,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:44,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:44,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 14:06:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:44,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:44,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:44,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 14:06:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:44,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 14:06:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:44,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 14:06:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:44,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 14:06:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:44,161 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-22 14:06:44,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:44,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498075549] [2021-12-22 14:06:44,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498075549] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:06:44,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:06:44,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-22 14:06:44,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665284779] [2021-12-22 14:06:44,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:06:44,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-22 14:06:44,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:44,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-22 14:06:44,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-22 14:06:44,163 INFO L87 Difference]: Start difference. First operand 7268 states and 9842 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15)