./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 ff03de63 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-ff03de6 [2021-12-21 15:39:55,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:39:55,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:39:55,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:39:55,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:39:55,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:39:55,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:39:55,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:39:55,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:39:55,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:39:55,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:39:55,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:39:55,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:39:55,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:39:55,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:39:55,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:39:55,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:39:55,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:39:55,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:39:55,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:39:55,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:39:55,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:39:55,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:39:55,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:39:55,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:39:55,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:39:55,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:39:55,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:39:55,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:39:55,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:39:55,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:39:55,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:39:55,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:39:55,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:39:55,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:39:55,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:39:55,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:39:55,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:39:55,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:39:55,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:39:55,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:39:55,937 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 15:39:55,954 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:39:55,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:39:55,955 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:39:55,955 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:39:55,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:39:55,956 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:39:55,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:39:55,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:39:55,956 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:39:55,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:39:55,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:39:55,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:39:55,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:39:55,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:39:55,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:39:55,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:39:55,958 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:39:55,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:39:55,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:39:55,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:39:55,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:39:55,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:39:55,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:39:55,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:39:55,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:39:55,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:39:55,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:39:55,960 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:39:55,961 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:39:55,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:39:55,961 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:39:55,961 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a [2021-12-21 15:39:56,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:39:56,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:39:56,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:39:56,192 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:39:56,193 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:39:56,194 INFO L432 ainManager$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 [2021-12-21 15:39:56,231 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20483e222/18b6d09d8518421fa59db68f531bdf47/FLAGc993bbb93 [2021-12-21 15:39:56,817 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:39:56,818 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 [2021-12-21 15:39:56,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20483e222/18b6d09d8518421fa59db68f531bdf47/FLAGc993bbb93 [2021-12-21 15:39:57,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20483e222/18b6d09d8518421fa59db68f531bdf47 [2021-12-21 15:39:57,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:39:57,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:39:57,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:39:57,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:39:57,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:39:57,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:39:57" (1/1) ... [2021-12-21 15:39:57,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33f5f144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:39:57, skipping insertion in model container [2021-12-21 15:39:57,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:39:57" (1/1) ... [2021-12-21 15:39:57,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:39:57,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:39:58,125 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] [2021-12-21 15:39:58,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:39:58,181 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:39:58,379 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] [2021-12-21 15:39:58,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:39:58,505 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:39:58,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:39:58 WrapperNode [2021-12-21 15:39:58,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:39:58,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:39:58,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:39:58,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:39:58,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:39:58" (1/1) ... [2021-12-21 15:39:58,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:39:58" (1/1) ... [2021-12-21 15:39:58,634 INFO L137 Inliner]: procedures = 133, calls = 733, calls flagged for inlining = 54, calls inlined = 44, statements flattened = 1375 [2021-12-21 15:39:58,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:39:58,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:39:58,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:39:58,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:39:58,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:39:58" (1/1) ... [2021-12-21 15:39:58,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:39:58" (1/1) ... [2021-12-21 15:39:58,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:39:58" (1/1) ... [2021-12-21 15:39:58,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:39:58" (1/1) ... [2021-12-21 15:39:58,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:39:58" (1/1) ... [2021-12-21 15:39:58,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:39:58" (1/1) ... [2021-12-21 15:39:58,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:39:58" (1/1) ... [2021-12-21 15:39:58,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:39:58,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:39:58,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:39:58,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:39:58,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:39:58" (1/1) ... [2021-12-21 15:39:58,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:39:58,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:39:58,747 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) [2021-12-21 15:39:58,763 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 [2021-12-21 15:39:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-12-21 15:39:58,776 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-12-21 15:39:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_init [2021-12-21 15:39:58,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_init [2021-12-21 15:39:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 15:39:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-21 15:39:58,777 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-21 15:39:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-21 15:39:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-21 15:39:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:39:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-12-21 15:39:58,777 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-12-21 15:39:58,777 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_control_cmd [2021-12-21 15:39:58,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_control_cmd [2021-12-21 15:39:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-21 15:39:58,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-21 15:39:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 15:39:58,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 15:39:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_exit [2021-12-21 15:39:58,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_exit [2021-12-21 15:39:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2021-12-21 15:39:58,778 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2021-12-21 15:39:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 15:39:58,779 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 15:39:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2021-12-21 15:39:58,779 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2021-12-21 15:39:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:39:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-21 15:39:58,779 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-21 15:39:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2021-12-21 15:39:58,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2021-12-21 15:39:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-21 15:39:58,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-21 15:39:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-21 15:39:58,780 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-21 15:39:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_command_msg [2021-12-21 15:39:58,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_command_msg [2021-12-21 15:39:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 15:39:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2021-12-21 15:39:58,781 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2021-12-21 15:39:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:39:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-21 15:39:58,781 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-21 15:39:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:39:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 15:39:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_write_mode [2021-12-21 15:39:58,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_write_mode [2021-12-21 15:39:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-12-21 15:39:58,782 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-12-21 15:39:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2021-12-21 15:39:58,782 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2021-12-21 15:39:58,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 15:39:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-12-21 15:39:58,783 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-12-21 15:39:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-21 15:39:58,783 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-21 15:39:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2021-12-21 15:39:58,783 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2021-12-21 15:39:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-12-21 15:39:58,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-12-21 15:39:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:39:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 15:39:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-21 15:39:58,784 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-21 15:39:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-12-21 15:39:58,784 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-12-21 15:39:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-21 15:39:58,785 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-21 15:39:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2021-12-21 15:39:58,785 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2021-12-21 15:39:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-21 15:39:58,785 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-21 15:39:58,785 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-21 15:39:58,786 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-21 15:39:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2021-12-21 15:39:58,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2021-12-21 15:39:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2021-12-21 15:39:58,786 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2021-12-21 15:39:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:39:58,786 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2021-12-21 15:39:58,787 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2021-12-21 15:39:58,787 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-21 15:39:58,787 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-21 15:39:58,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-21 15:39:58,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:39:58,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:39:59,073 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:39:59,075 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:39:59,406 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2021-12-21 15:39:59,538 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-21 15:40:00,824 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2021-12-21 15:40:00,825 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2021-12-21 15:40:00,852 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:40:00,859 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:40:00,859 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-21 15:40:00,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:40:00 BoogieIcfgContainer [2021-12-21 15:40:00,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:40:00,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:40:00,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:40:00,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:40:00,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:39:57" (1/3) ... [2021-12-21 15:40:00,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee422df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:40:00, skipping insertion in model container [2021-12-21 15:40:00,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:39:58" (2/3) ... [2021-12-21 15:40:00,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee422df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:40:00, skipping insertion in model container [2021-12-21 15:40:00,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:40:00" (3/3) ... [2021-12-21 15:40:00,867 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-12-21 15:40:00,870 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:40:00,870 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:40:00,901 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:40:00,905 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 [2021-12-21 15:40:00,905 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 15:40:00,920 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) [2021-12-21 15:40:00,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-21 15:40:00,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:00,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:40:00,925 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:00,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:00,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1517292025, now seen corresponding path program 1 times [2021-12-21 15:40:00,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:00,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083914497] [2021-12-21 15:40:00,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:00,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:01,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:01,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:40:01,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:01,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083914497] [2021-12-21 15:40:01,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083914497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:01,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:01,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 15:40:01,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351821925] [2021-12-21 15:40:01,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:01,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 15:40:01,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:01,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 15:40:01,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 15:40:01,282 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) [2021-12-21 15:40:01,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:01,411 INFO L93 Difference]: Finished difference Result 1253 states and 1768 transitions. [2021-12-21 15:40:01,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 15:40:01,413 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 [2021-12-21 15:40:01,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:01,428 INFO L225 Difference]: With dead ends: 1253 [2021-12-21 15:40:01,428 INFO L226 Difference]: Without dead ends: 824 [2021-12-21 15:40:01,434 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 [2021-12-21 15:40:01,436 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 [2021-12-21 15:40:01,437 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] [2021-12-21 15:40:01,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2021-12-21 15:40:01,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 820. [2021-12-21 15:40:01,558 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) [2021-12-21 15:40:01,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1076 transitions. [2021-12-21 15:40:01,569 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1076 transitions. Word has length 16 [2021-12-21 15:40:01,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:01,570 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 1076 transitions. [2021-12-21 15:40:01,570 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) [2021-12-21 15:40:01,570 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1076 transitions. [2021-12-21 15:40:01,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-21 15:40:01,571 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:01,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:40:01,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:40:01,571 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:01,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:01,572 INFO L85 PathProgramCache]: Analyzing trace with hash 208359179, now seen corresponding path program 1 times [2021-12-21 15:40:01,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:01,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845112252] [2021-12-21 15:40:01,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:01,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:01,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:40:01,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:01,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845112252] [2021-12-21 15:40:01,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845112252] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:01,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:01,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 15:40:01,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977140551] [2021-12-21 15:40:01,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:01,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 15:40:01,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:01,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 15:40:01,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 15:40:01,680 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) [2021-12-21 15:40:01,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:01,764 INFO L93 Difference]: Finished difference Result 2433 states and 3207 transitions. [2021-12-21 15:40:01,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 15:40:01,764 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 [2021-12-21 15:40:01,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:01,779 INFO L225 Difference]: With dead ends: 2433 [2021-12-21 15:40:01,780 INFO L226 Difference]: Without dead ends: 1617 [2021-12-21 15:40:01,787 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 [2021-12-21 15:40:01,807 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 [2021-12-21 15:40:01,807 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] [2021-12-21 15:40:01,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2021-12-21 15:40:01,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1610. [2021-12-21 15:40:01,873 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) [2021-12-21 15:40:01,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2117 transitions. [2021-12-21 15:40:01,885 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2117 transitions. Word has length 17 [2021-12-21 15:40:01,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:01,885 INFO L470 AbstractCegarLoop]: Abstraction has 1610 states and 2117 transitions. [2021-12-21 15:40:01,885 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) [2021-12-21 15:40:01,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2117 transitions. [2021-12-21 15:40:01,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-21 15:40:01,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:01,892 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] [2021-12-21 15:40:01,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 15:40:01,893 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:01,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:01,894 INFO L85 PathProgramCache]: Analyzing trace with hash 26582145, now seen corresponding path program 1 times [2021-12-21 15:40:01,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:01,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696439837] [2021-12-21 15:40:01,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:01,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:01,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:02,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:40:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:02,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 15:40:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:02,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 15:40:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:02,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 15:40:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:02,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:02,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:40:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:02,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 15:40:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:02,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 15:40:02,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:02,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696439837] [2021-12-21 15:40:02,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696439837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:02,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:02,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:40:02,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50995589] [2021-12-21 15:40:02,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:02,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:40:02,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:02,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:40:02,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:40:02,132 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) [2021-12-21 15:40:04,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:04,083 INFO L93 Difference]: Finished difference Result 3324 states and 4411 transitions. [2021-12-21 15:40:04,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:40:04,084 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 [2021-12-21 15:40:04,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:04,093 INFO L225 Difference]: With dead ends: 3324 [2021-12-21 15:40:04,094 INFO L226 Difference]: Without dead ends: 1722 [2021-12-21 15:40:04,098 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 [2021-12-21 15:40:04,100 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 235 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.8s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:04,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 2223 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-21 15:40:04,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2021-12-21 15:40:04,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1610. [2021-12-21 15:40:04,150 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) [2021-12-21 15:40:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2116 transitions. [2021-12-21 15:40:04,157 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2116 transitions. Word has length 71 [2021-12-21 15:40:04,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:04,157 INFO L470 AbstractCegarLoop]: Abstraction has 1610 states and 2116 transitions. [2021-12-21 15:40:04,158 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) [2021-12-21 15:40:04,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2116 transitions. [2021-12-21 15:40:04,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-21 15:40:04,159 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:04,160 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] [2021-12-21 15:40:04,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 15:40:04,160 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:04,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:04,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2146869344, now seen corresponding path program 1 times [2021-12-21 15:40:04,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:04,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730410597] [2021-12-21 15:40:04,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:04,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:04,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:04,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 15:40:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:04,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 15:40:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:04,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 15:40:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:04,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 15:40:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:04,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:04,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:40:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:04,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 15:40:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 15:40:04,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:04,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730410597] [2021-12-21 15:40:04,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730410597] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:04,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:04,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 15:40:04,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174556885] [2021-12-21 15:40:04,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:04,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:40:04,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:04,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:40:04,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:40:04,281 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) [2021-12-21 15:40:06,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:06,312 INFO L93 Difference]: Finished difference Result 4036 states and 5567 transitions. [2021-12-21 15:40:06,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:40:06,312 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 [2021-12-21 15:40:06,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:06,322 INFO L225 Difference]: With dead ends: 4036 [2021-12-21 15:40:06,322 INFO L226 Difference]: Without dead ends: 2437 [2021-12-21 15:40:06,326 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 [2021-12-21 15:40:06,327 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 437 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:06,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 1457 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-21 15:40:06,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2021-12-21 15:40:06,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 2313. [2021-12-21 15:40:06,390 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) [2021-12-21 15:40:06,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 3224 transitions. [2021-12-21 15:40:06,399 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 3224 transitions. Word has length 71 [2021-12-21 15:40:06,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:06,399 INFO L470 AbstractCegarLoop]: Abstraction has 2313 states and 3224 transitions. [2021-12-21 15:40:06,399 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) [2021-12-21 15:40:06,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 3224 transitions. [2021-12-21 15:40:06,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-21 15:40:06,401 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:06,401 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] [2021-12-21 15:40:06,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 15:40:06,401 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:06,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:06,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1152569613, now seen corresponding path program 1 times [2021-12-21 15:40:06,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:06,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779987933] [2021-12-21 15:40:06,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:06,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:06,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:06,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:40:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:06,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 15:40:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:06,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:06,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:06,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 15:40:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:06,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:40:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:06,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:40:06,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:06,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779987933] [2021-12-21 15:40:06,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779987933] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:06,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:06,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:40:06,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660059043] [2021-12-21 15:40:06,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:06,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:40:06,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:06,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:40:06,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:40:06,539 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) [2021-12-21 15:40:07,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:07,362 INFO L93 Difference]: Finished difference Result 6341 states and 9294 transitions. [2021-12-21 15:40:07,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:40:07,363 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 [2021-12-21 15:40:07,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:07,380 INFO L225 Difference]: With dead ends: 6341 [2021-12-21 15:40:07,380 INFO L226 Difference]: Without dead ends: 4040 [2021-12-21 15:40:07,386 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 [2021-12-21 15:40:07,387 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 564 mSDsluCounter, 1910 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 2779 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:07,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 2779 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 15:40:07,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-12-21 15:40:07,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 2347. [2021-12-21 15:40:07,468 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) [2021-12-21 15:40:07,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 3276 transitions. [2021-12-21 15:40:07,476 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 3276 transitions. Word has length 68 [2021-12-21 15:40:07,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:07,477 INFO L470 AbstractCegarLoop]: Abstraction has 2347 states and 3276 transitions. [2021-12-21 15:40:07,477 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) [2021-12-21 15:40:07,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 3276 transitions. [2021-12-21 15:40:07,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-21 15:40:07,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:07,479 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] [2021-12-21 15:40:07,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 15:40:07,479 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:07,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:07,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1776712988, now seen corresponding path program 1 times [2021-12-21 15:40:07,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:07,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314759840] [2021-12-21 15:40:07,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:07,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:07,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:07,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:40:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:07,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:40:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:07,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:07,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:07,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:40:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:07,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 15:40:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:07,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:40:07,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:07,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314759840] [2021-12-21 15:40:07,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314759840] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:07,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:07,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:40:07,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612872496] [2021-12-21 15:40:07,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:07,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:40:07,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:07,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:40:07,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:40:07,631 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) [2021-12-21 15:40:08,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:08,519 INFO L93 Difference]: Finished difference Result 5919 states and 8590 transitions. [2021-12-21 15:40:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:40:08,519 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 [2021-12-21 15:40:08,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:08,535 INFO L225 Difference]: With dead ends: 5919 [2021-12-21 15:40:08,535 INFO L226 Difference]: Without dead ends: 3584 [2021-12-21 15:40:08,542 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 [2021-12-21 15:40:08,542 INFO L933 BasicCegarLoop]: 811 mSDtfsCounter, 453 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:08,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 2642 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 15:40:08,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2021-12-21 15:40:08,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 2363. [2021-12-21 15:40:08,664 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) [2021-12-21 15:40:08,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3292 transitions. [2021-12-21 15:40:08,670 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3292 transitions. Word has length 69 [2021-12-21 15:40:08,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:08,670 INFO L470 AbstractCegarLoop]: Abstraction has 2363 states and 3292 transitions. [2021-12-21 15:40:08,670 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) [2021-12-21 15:40:08,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3292 transitions. [2021-12-21 15:40:08,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-21 15:40:08,672 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:08,672 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] [2021-12-21 15:40:08,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 15:40:08,673 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:08,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:08,673 INFO L85 PathProgramCache]: Analyzing trace with hash 676145405, now seen corresponding path program 1 times [2021-12-21 15:40:08,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:08,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834335383] [2021-12-21 15:40:08,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:08,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:08,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:08,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:40:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:08,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:40:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:08,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:08,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:08,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:40:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:08,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 15:40:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:40:08,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:08,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834335383] [2021-12-21 15:40:08,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834335383] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:08,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:08,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 15:40:08,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691145852] [2021-12-21 15:40:08,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:08,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:40:08,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:08,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:40:08,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:40:08,904 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) [2021-12-21 15:40:09,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:09,904 INFO L93 Difference]: Finished difference Result 3619 states and 5113 transitions. [2021-12-21 15:40:09,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:40:09,905 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 [2021-12-21 15:40:09,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:09,918 INFO L225 Difference]: With dead ends: 3619 [2021-12-21 15:40:09,918 INFO L226 Difference]: Without dead ends: 2425 [2021-12-21 15:40:09,921 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 [2021-12-21 15:40:09,924 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 117 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:09,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 3216 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 15:40:09,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-12-21 15:40:10,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2377. [2021-12-21 15:40:10,006 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) [2021-12-21 15:40:10,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2377 states to 2377 states and 3312 transitions. [2021-12-21 15:40:10,013 INFO L78 Accepts]: Start accepts. Automaton has 2377 states and 3312 transitions. Word has length 69 [2021-12-21 15:40:10,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:10,014 INFO L470 AbstractCegarLoop]: Abstraction has 2377 states and 3312 transitions. [2021-12-21 15:40:10,014 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) [2021-12-21 15:40:10,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2377 states and 3312 transitions. [2021-12-21 15:40:10,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-21 15:40:10,016 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:10,016 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] [2021-12-21 15:40:10,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 15:40:10,016 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:10,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:10,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1333958436, now seen corresponding path program 1 times [2021-12-21 15:40:10,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:10,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925418500] [2021-12-21 15:40:10,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:10,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:10,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:10,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:40:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:10,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:40:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:10,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:10,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:10,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:40:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:10,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 15:40:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:10,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:40:10,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:10,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925418500] [2021-12-21 15:40:10,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925418500] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:10,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:10,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 15:40:10,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880484702] [2021-12-21 15:40:10,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:10,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 15:40:10,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:10,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 15:40:10,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-21 15:40:10,193 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) [2021-12-21 15:40:11,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:11,306 INFO L93 Difference]: Finished difference Result 5577 states and 8014 transitions. [2021-12-21 15:40:11,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 15:40:11,307 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 [2021-12-21 15:40:11,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:11,319 INFO L225 Difference]: With dead ends: 5577 [2021-12-21 15:40:11,319 INFO L226 Difference]: Without dead ends: 3212 [2021-12-21 15:40:11,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-21 15:40:11,326 INFO L933 BasicCegarLoop]: 906 mSDtfsCounter, 448 mSDsluCounter, 6578 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 7484 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:11,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [536 Valid, 7484 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-21 15:40:11,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3212 states. [2021-12-21 15:40:11,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3212 to 2381. [2021-12-21 15:40:11,403 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) [2021-12-21 15:40:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 3312 transitions. [2021-12-21 15:40:11,411 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 3312 transitions. Word has length 69 [2021-12-21 15:40:11,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:11,411 INFO L470 AbstractCegarLoop]: Abstraction has 2381 states and 3312 transitions. [2021-12-21 15:40:11,411 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) [2021-12-21 15:40:11,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 3312 transitions. [2021-12-21 15:40:11,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-21 15:40:11,415 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:11,415 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] [2021-12-21 15:40:11,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 15:40:11,416 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:11,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:11,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1804654053, now seen corresponding path program 1 times [2021-12-21 15:40:11,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:11,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089797682] [2021-12-21 15:40:11,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:11,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:11,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:11,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:40:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:11,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:40:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:11,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:11,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:11,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:40:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:11,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:11,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-21 15:40:11,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:11,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089797682] [2021-12-21 15:40:11,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089797682] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:11,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:11,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:40:11,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320966282] [2021-12-21 15:40:11,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:11,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:40:11,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:11,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:40:11,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:40:11,608 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) [2021-12-21 15:40:12,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:12,802 INFO L93 Difference]: Finished difference Result 5739 states and 8248 transitions. [2021-12-21 15:40:12,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:40:12,802 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 [2021-12-21 15:40:12,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:12,816 INFO L225 Difference]: With dead ends: 5739 [2021-12-21 15:40:12,816 INFO L226 Difference]: Without dead ends: 3370 [2021-12-21 15:40:12,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:40:12,823 INFO L933 BasicCegarLoop]: 813 mSDtfsCounter, 397 mSDsluCounter, 3179 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 3992 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:12,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 3992 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-21 15:40:12,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2021-12-21 15:40:12,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 2179. [2021-12-21 15:40:12,919 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) [2021-12-21 15:40:12,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2179 states to 2179 states and 2996 transitions. [2021-12-21 15:40:12,925 INFO L78 Accepts]: Start accepts. Automaton has 2179 states and 2996 transitions. Word has length 75 [2021-12-21 15:40:12,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:12,926 INFO L470 AbstractCegarLoop]: Abstraction has 2179 states and 2996 transitions. [2021-12-21 15:40:12,926 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) [2021-12-21 15:40:12,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states and 2996 transitions. [2021-12-21 15:40:12,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-21 15:40:12,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:12,929 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] [2021-12-21 15:40:12,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 15:40:12,930 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:12,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:12,930 INFO L85 PathProgramCache]: Analyzing trace with hash -506709307, now seen corresponding path program 1 times [2021-12-21 15:40:12,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:12,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787185974] [2021-12-21 15:40:12,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:12,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:40:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:40:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:40:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,100 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-21 15:40:13,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:13,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787185974] [2021-12-21 15:40:13,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787185974] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:13,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:13,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 15:40:13,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162983008] [2021-12-21 15:40:13,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:13,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:40:13,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:13,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:40:13,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:40:13,102 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) [2021-12-21 15:40:15,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:15,144 INFO L93 Difference]: Finished difference Result 3452 states and 4818 transitions. [2021-12-21 15:40:15,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 15:40:15,144 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 [2021-12-21 15:40:15,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:15,169 INFO L225 Difference]: With dead ends: 3452 [2021-12-21 15:40:15,172 INFO L226 Difference]: Without dead ends: 3447 [2021-12-21 15:40:15,174 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 [2021-12-21 15:40:15,175 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 2408 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 1156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2521 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 2701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1156 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:15,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2521 Valid, 2338 Invalid, 2701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1156 Valid, 1545 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-21 15:40:15,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-12-21 15:40:15,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 3363. [2021-12-21 15:40:15,282 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) [2021-12-21 15:40:15,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 4685 transitions. [2021-12-21 15:40:15,290 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 4685 transitions. Word has length 75 [2021-12-21 15:40:15,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:15,291 INFO L470 AbstractCegarLoop]: Abstraction has 3363 states and 4685 transitions. [2021-12-21 15:40:15,292 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) [2021-12-21 15:40:15,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 4685 transitions. [2021-12-21 15:40:15,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-21 15:40:15,294 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:15,294 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] [2021-12-21 15:40:15,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 15:40:15,294 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:15,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:15,295 INFO L85 PathProgramCache]: Analyzing trace with hash -418091033, now seen corresponding path program 1 times [2021-12-21 15:40:15,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:15,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389856477] [2021-12-21 15:40:15,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:15,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 15:40:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 15:40:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:40:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 15:40:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 15:40:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-21 15:40:15,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:15,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389856477] [2021-12-21 15:40:15,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389856477] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:15,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:15,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 15:40:15,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090719073] [2021-12-21 15:40:15,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:15,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:40:15,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:15,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:40:15,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:40:15,491 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) [2021-12-21 15:40:16,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:16,480 INFO L93 Difference]: Finished difference Result 7643 states and 10959 transitions. [2021-12-21 15:40:16,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:40:16,481 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 [2021-12-21 15:40:16,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:16,494 INFO L225 Difference]: With dead ends: 7643 [2021-12-21 15:40:16,495 INFO L226 Difference]: Without dead ends: 4292 [2021-12-21 15:40:16,503 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 [2021-12-21 15:40:16,504 INFO L933 BasicCegarLoop]: 798 mSDtfsCounter, 599 mSDsluCounter, 2302 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 3100 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 [2021-12-21 15:40:16,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [669 Valid, 3100 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 15:40:16,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4292 states. [2021-12-21 15:40:16,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4292 to 2826. [2021-12-21 15:40:16,652 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) [2021-12-21 15:40:16,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 3941 transitions. [2021-12-21 15:40:16,660 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 3941 transitions. Word has length 94 [2021-12-21 15:40:16,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:16,661 INFO L470 AbstractCegarLoop]: Abstraction has 2826 states and 3941 transitions. [2021-12-21 15:40:16,661 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) [2021-12-21 15:40:16,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 3941 transitions. [2021-12-21 15:40:16,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-21 15:40:16,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:16,663 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] [2021-12-21 15:40:16,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 15:40:16,664 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:16,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:16,664 INFO L85 PathProgramCache]: Analyzing trace with hash 564700489, now seen corresponding path program 1 times [2021-12-21 15:40:16,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:16,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400413846] [2021-12-21 15:40:16,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:16,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:16,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:16,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 15:40:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:16,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 15:40:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:16,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:16,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:40:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:16,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 15:40:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:16,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:16,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:16,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 15:40:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:16,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 15:40:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:16,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 15:40:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:16,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:40:16,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:16,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400413846] [2021-12-21 15:40:16,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400413846] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:16,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:16,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-21 15:40:16,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38548110] [2021-12-21 15:40:16,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:16,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-21 15:40:16,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:16,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-21 15:40:16,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-21 15:40:16,923 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) [2021-12-21 15:40:18,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:18,249 INFO L93 Difference]: Finished difference Result 6776 states and 9771 transitions. [2021-12-21 15:40:18,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:40:18,250 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 [2021-12-21 15:40:18,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:18,261 INFO L225 Difference]: With dead ends: 6776 [2021-12-21 15:40:18,261 INFO L226 Difference]: Without dead ends: 4370 [2021-12-21 15:40:18,266 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 [2021-12-21 15:40:18,267 INFO L933 BasicCegarLoop]: 803 mSDtfsCounter, 433 mSDsluCounter, 6168 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 6971 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:18,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [518 Valid, 6971 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 15:40:18,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4370 states. [2021-12-21 15:40:18,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4370 to 2826. [2021-12-21 15:40:18,377 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) [2021-12-21 15:40:18,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 3933 transitions. [2021-12-21 15:40:18,384 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 3933 transitions. Word has length 92 [2021-12-21 15:40:18,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:18,385 INFO L470 AbstractCegarLoop]: Abstraction has 2826 states and 3933 transitions. [2021-12-21 15:40:18,385 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) [2021-12-21 15:40:18,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 3933 transitions. [2021-12-21 15:40:18,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-21 15:40:18,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:18,387 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] [2021-12-21 15:40:18,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 15:40:18,387 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:18,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:18,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1871827029, now seen corresponding path program 1 times [2021-12-21 15:40:18,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:18,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27816064] [2021-12-21 15:40:18,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:18,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:18,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:18,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:40:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:18,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:40:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:18,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:18,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:18,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:40:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:18,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:18,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:18,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 15:40:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-21 15:40:18,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:18,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27816064] [2021-12-21 15:40:18,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27816064] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:18,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:18,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:40:18,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537363830] [2021-12-21 15:40:18,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:18,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:40:18,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:18,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:40:18,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:40:18,547 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) [2021-12-21 15:40:19,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:19,344 INFO L93 Difference]: Finished difference Result 6262 states and 9007 transitions. [2021-12-21 15:40:19,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:40:19,344 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 [2021-12-21 15:40:19,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:19,354 INFO L225 Difference]: With dead ends: 6262 [2021-12-21 15:40:19,355 INFO L226 Difference]: Without dead ends: 3856 [2021-12-21 15:40:19,361 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 [2021-12-21 15:40:19,362 INFO L933 BasicCegarLoop]: 810 mSDtfsCounter, 513 mSDsluCounter, 2326 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 3136 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 [2021-12-21 15:40:19,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 3136 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 15:40:19,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3856 states. [2021-12-21 15:40:19,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3856 to 2636. [2021-12-21 15:40:19,461 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) [2021-12-21 15:40:19,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3635 transitions. [2021-12-21 15:40:19,468 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3635 transitions. Word has length 87 [2021-12-21 15:40:19,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:19,468 INFO L470 AbstractCegarLoop]: Abstraction has 2636 states and 3635 transitions. [2021-12-21 15:40:19,468 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) [2021-12-21 15:40:19,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3635 transitions. [2021-12-21 15:40:19,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-21 15:40:19,470 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:19,470 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] [2021-12-21 15:40:19,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 15:40:19,471 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:19,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:19,471 INFO L85 PathProgramCache]: Analyzing trace with hash -205382314, now seen corresponding path program 1 times [2021-12-21 15:40:19,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:19,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117718048] [2021-12-21 15:40:19,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:19,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:40:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:40:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:40:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 15:40:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 15:40:19,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:19,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117718048] [2021-12-21 15:40:19,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117718048] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:19,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:19,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 15:40:19,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985278154] [2021-12-21 15:40:19,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:19,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 15:40:19,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:19,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 15:40:19,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:40:19,683 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) [2021-12-21 15:40:20,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:20,629 INFO L93 Difference]: Finished difference Result 3905 states and 5433 transitions. [2021-12-21 15:40:20,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:40:20,629 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 [2021-12-21 15:40:20,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:20,636 INFO L225 Difference]: With dead ends: 3905 [2021-12-21 15:40:20,636 INFO L226 Difference]: Without dead ends: 2681 [2021-12-21 15:40:20,639 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 [2021-12-21 15:40:20,639 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 340 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:20,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2910 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 15:40:20,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-12-21 15:40:20,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2644. [2021-12-21 15:40:20,732 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) [2021-12-21 15:40:20,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3643 transitions. [2021-12-21 15:40:20,738 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3643 transitions. Word has length 87 [2021-12-21 15:40:20,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:20,738 INFO L470 AbstractCegarLoop]: Abstraction has 2644 states and 3643 transitions. [2021-12-21 15:40:20,738 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) [2021-12-21 15:40:20,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3643 transitions. [2021-12-21 15:40:20,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-21 15:40:20,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:20,741 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] [2021-12-21 15:40:20,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 15:40:20,741 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:20,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:20,741 INFO L85 PathProgramCache]: Analyzing trace with hash 2079481141, now seen corresponding path program 1 times [2021-12-21 15:40:20,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:20,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460291712] [2021-12-21 15:40:20,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:20,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:20,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:20,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:40:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:20,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:40:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:20,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:20,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:20,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:40:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:20,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:20,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:20,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 15:40:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:20,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-21 15:40:20,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:20,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460291712] [2021-12-21 15:40:20,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460291712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:20,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:20,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:40:20,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742160993] [2021-12-21 15:40:20,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:20,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:40:20,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:20,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:40:20,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:40:20,882 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) [2021-12-21 15:40:21,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:21,630 INFO L93 Difference]: Finished difference Result 4660 states and 6627 transitions. [2021-12-21 15:40:21,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:40:21,631 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 [2021-12-21 15:40:21,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:21,639 INFO L225 Difference]: With dead ends: 4660 [2021-12-21 15:40:21,639 INFO L226 Difference]: Without dead ends: 3432 [2021-12-21 15:40:21,643 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 [2021-12-21 15:40:21,643 INFO L933 BasicCegarLoop]: 831 mSDtfsCounter, 426 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 2181 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 [2021-12-21 15:40:21,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [505 Valid, 2181 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 15:40:21,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3432 states. [2021-12-21 15:40:21,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3432 to 2652. [2021-12-21 15:40:21,742 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) [2021-12-21 15:40:21,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3651 transitions. [2021-12-21 15:40:21,748 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3651 transitions. Word has length 87 [2021-12-21 15:40:21,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:21,748 INFO L470 AbstractCegarLoop]: Abstraction has 2652 states and 3651 transitions. [2021-12-21 15:40:21,748 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) [2021-12-21 15:40:21,748 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3651 transitions. [2021-12-21 15:40:21,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-21 15:40:21,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:21,750 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] [2021-12-21 15:40:21,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 15:40:21,751 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:21,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:21,751 INFO L85 PathProgramCache]: Analyzing trace with hash 390816807, now seen corresponding path program 1 times [2021-12-21 15:40:21,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:21,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894040490] [2021-12-21 15:40:21,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:21,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-21 15:40:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 15:40:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:40:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:40:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 15:40:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:40:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:40:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 15:40:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,852 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 15:40:21,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:21,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894040490] [2021-12-21 15:40:21,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894040490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:21,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:21,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:40:21,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770563583] [2021-12-21 15:40:21,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:21,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:40:21,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:21,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:40:21,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:40:21,855 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) [2021-12-21 15:40:23,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:23,636 INFO L93 Difference]: Finished difference Result 5424 states and 7473 transitions. [2021-12-21 15:40:23,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:40:23,637 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 [2021-12-21 15:40:23,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:23,644 INFO L225 Difference]: With dead ends: 5424 [2021-12-21 15:40:23,644 INFO L226 Difference]: Without dead ends: 2778 [2021-12-21 15:40:23,650 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 [2021-12-21 15:40:23,651 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 247 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:23,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 1813 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-21 15:40:23,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2021-12-21 15:40:23,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 2664. [2021-12-21 15:40:23,750 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) [2021-12-21 15:40:23,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 3662 transitions. [2021-12-21 15:40:23,757 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 3662 transitions. Word has length 94 [2021-12-21 15:40:23,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:23,758 INFO L470 AbstractCegarLoop]: Abstraction has 2664 states and 3662 transitions. [2021-12-21 15:40:23,758 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) [2021-12-21 15:40:23,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 3662 transitions. [2021-12-21 15:40:23,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-21 15:40:23,760 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:23,760 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] [2021-12-21 15:40:23,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 15:40:23,760 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:23,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:23,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1118734186, now seen corresponding path program 1 times [2021-12-21 15:40:23,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:23,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816971237] [2021-12-21 15:40:23,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:23,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:23,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:23,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:40:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:23,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:40:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:23,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:23,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:23,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:40:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:23,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:23,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:23,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 15:40:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:23,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-21 15:40:23,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:23,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816971237] [2021-12-21 15:40:23,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816971237] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:23,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:23,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 15:40:23,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511647267] [2021-12-21 15:40:23,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:23,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:40:23,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:23,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:40:23,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:40:23,913 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) [2021-12-21 15:40:25,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:25,920 INFO L93 Difference]: Finished difference Result 3982 states and 5507 transitions. [2021-12-21 15:40:25,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 15:40:25,921 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 [2021-12-21 15:40:25,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:25,930 INFO L225 Difference]: With dead ends: 3982 [2021-12-21 15:40:25,931 INFO L226 Difference]: Without dead ends: 3979 [2021-12-21 15:40:25,933 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 [2021-12-21 15:40:25,934 INFO L933 BasicCegarLoop]: 1001 mSDtfsCounter, 2072 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 912 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2202 SdHoareTripleChecker+Valid, 2917 SdHoareTripleChecker+Invalid, 2799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 912 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:25,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2202 Valid, 2917 Invalid, 2799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [912 Valid, 1887 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-21 15:40:25,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2021-12-21 15:40:26,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3879. [2021-12-21 15:40:26,106 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) [2021-12-21 15:40:26,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3879 states to 3879 states and 5379 transitions. [2021-12-21 15:40:26,115 INFO L78 Accepts]: Start accepts. Automaton has 3879 states and 5379 transitions. Word has length 89 [2021-12-21 15:40:26,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:26,115 INFO L470 AbstractCegarLoop]: Abstraction has 3879 states and 5379 transitions. [2021-12-21 15:40:26,115 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) [2021-12-21 15:40:26,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3879 states and 5379 transitions. [2021-12-21 15:40:26,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-21 15:40:26,117 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:26,117 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] [2021-12-21 15:40:26,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 15:40:26,118 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:26,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:26,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1748979270, now seen corresponding path program 1 times [2021-12-21 15:40:26,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:26,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549134762] [2021-12-21 15:40:26,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:26,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:26,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:26,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:40:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:26,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:40:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:26,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:26,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:26,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:40:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:26,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:26,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:26,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 15:40:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:26,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 15:40:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:26,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:40:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:26,386 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 15:40:26,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:26,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549134762] [2021-12-21 15:40:26,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549134762] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:40:26,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736887624] [2021-12-21 15:40:26,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:26,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:40:26,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:40:26,388 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) [2021-12-21 15:40:26,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 15:40:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:26,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-21 15:40:26,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:40:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 15:40:27,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:40:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 15:40:27,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736887624] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:40:27,284 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:40:27,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 26 [2021-12-21 15:40:27,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380338684] [2021-12-21 15:40:27,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:40:27,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-21 15:40:27,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:27,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-21 15:40:27,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=596, Unknown=0, NotChecked=0, Total=650 [2021-12-21 15:40:27,285 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) [2021-12-21 15:40:30,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:30,794 INFO L93 Difference]: Finished difference Result 11133 states and 16255 transitions. [2021-12-21 15:40:30,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-21 15:40:30,794 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 [2021-12-21 15:40:30,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:30,816 INFO L225 Difference]: With dead ends: 11133 [2021-12-21 15:40:30,816 INFO L226 Difference]: Without dead ends: 7266 [2021-12-21 15:40:30,828 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 [2021-12-21 15:40:30,829 INFO L933 BasicCegarLoop]: 930 mSDtfsCounter, 1009 mSDsluCounter, 16499 mSDsCounter, 0 mSdLazyCounter, 3929 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 17429 SdHoareTripleChecker+Invalid, 4499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 3929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:30,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 17429 Invalid, 4499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 3929 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-21 15:40:30,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7266 states. [2021-12-21 15:40:31,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7266 to 3833. [2021-12-21 15:40:31,047 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) [2021-12-21 15:40:31,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 5271 transitions. [2021-12-21 15:40:31,057 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 5271 transitions. Word has length 94 [2021-12-21 15:40:31,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:31,057 INFO L470 AbstractCegarLoop]: Abstraction has 3833 states and 5271 transitions. [2021-12-21 15:40:31,058 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) [2021-12-21 15:40:31,058 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 5271 transitions. [2021-12-21 15:40:31,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-21 15:40:31,059 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:31,060 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] [2021-12-21 15:40:31,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 15:40:31,271 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 [2021-12-21 15:40:31,271 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:31,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:31,272 INFO L85 PathProgramCache]: Analyzing trace with hash -448437055, now seen corresponding path program 1 times [2021-12-21 15:40:31,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:31,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980279956] [2021-12-21 15:40:31,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:31,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:31,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:31,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:40:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:31,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:40:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:31,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:31,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:31,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:40:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:31,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:31,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:31,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 15:40:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:31,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 15:40:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:31,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 15:40:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:31,487 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-21 15:40:31,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:31,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980279956] [2021-12-21 15:40:31,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980279956] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:31,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:31,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 15:40:31,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778127120] [2021-12-21 15:40:31,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:31,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 15:40:31,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:31,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 15:40:31,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-12-21 15:40:31,490 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) [2021-12-21 15:40:33,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:33,936 INFO L93 Difference]: Finished difference Result 10144 states and 13936 transitions. [2021-12-21 15:40:33,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 15:40:33,937 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 [2021-12-21 15:40:33,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:33,957 INFO L225 Difference]: With dead ends: 10144 [2021-12-21 15:40:33,957 INFO L226 Difference]: Without dead ends: 8384 [2021-12-21 15:40:33,964 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 [2021-12-21 15:40:33,964 INFO L933 BasicCegarLoop]: 907 mSDtfsCounter, 1947 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 2529 mSolverCounterSat, 890 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2060 SdHoareTripleChecker+Valid, 3773 SdHoareTripleChecker+Invalid, 3419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 890 IncrementalHoareTripleChecker+Valid, 2529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:33,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2060 Valid, 3773 Invalid, 3419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [890 Valid, 2529 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-21 15:40:33,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8384 states. [2021-12-21 15:40:34,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8384 to 8132. [2021-12-21 15:40:34,353 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) [2021-12-21 15:40:34,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8132 states to 8132 states and 11181 transitions. [2021-12-21 15:40:34,373 INFO L78 Accepts]: Start accepts. Automaton has 8132 states and 11181 transitions. Word has length 96 [2021-12-21 15:40:34,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:34,373 INFO L470 AbstractCegarLoop]: Abstraction has 8132 states and 11181 transitions. [2021-12-21 15:40:34,373 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) [2021-12-21 15:40:34,374 INFO L276 IsEmpty]: Start isEmpty. Operand 8132 states and 11181 transitions. [2021-12-21 15:40:34,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-21 15:40:34,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:34,375 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] [2021-12-21 15:40:34,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-21 15:40:34,376 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:34,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:34,376 INFO L85 PathProgramCache]: Analyzing trace with hash 832679025, now seen corresponding path program 1 times [2021-12-21 15:40:34,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:34,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749280221] [2021-12-21 15:40:34,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:34,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:34,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:34,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:40:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:34,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:40:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:34,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:34,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:34,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:40:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:34,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:34,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:34,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 15:40:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:34,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 15:40:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:34,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 15:40:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:34,579 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 15:40:34,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:34,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749280221] [2021-12-21 15:40:34,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749280221] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:34,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:34,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-21 15:40:34,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175298751] [2021-12-21 15:40:34,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:34,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 15:40:34,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:34,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 15:40:34,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:40:34,581 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) [2021-12-21 15:40:36,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:36,694 INFO L93 Difference]: Finished difference Result 17611 states and 24834 transitions. [2021-12-21 15:40:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 15:40:36,694 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 [2021-12-21 15:40:36,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:36,749 INFO L225 Difference]: With dead ends: 17611 [2021-12-21 15:40:36,749 INFO L226 Difference]: Without dead ends: 10847 [2021-12-21 15:40:36,758 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 [2021-12-21 15:40:36,759 INFO L933 BasicCegarLoop]: 810 mSDtfsCounter, 462 mSDsluCounter, 6839 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 7649 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:36,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 7649 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 15:40:36,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10847 states. [2021-12-21 15:40:37,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10847 to 8126. [2021-12-21 15:40:37,113 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) [2021-12-21 15:40:37,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8126 states to 8126 states and 11151 transitions. [2021-12-21 15:40:37,136 INFO L78 Accepts]: Start accepts. Automaton has 8126 states and 11151 transitions. Word has length 97 [2021-12-21 15:40:37,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:37,136 INFO L470 AbstractCegarLoop]: Abstraction has 8126 states and 11151 transitions. [2021-12-21 15:40:37,136 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) [2021-12-21 15:40:37,136 INFO L276 IsEmpty]: Start isEmpty. Operand 8126 states and 11151 transitions. [2021-12-21 15:40:37,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-21 15:40:37,139 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:37,139 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] [2021-12-21 15:40:37,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-21 15:40:37,139 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:37,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:37,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1118058599, now seen corresponding path program 1 times [2021-12-21 15:40:37,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:37,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026446714] [2021-12-21 15:40:37,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:37,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:37,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:37,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-21 15:40:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:37,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 15:40:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:37,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-21 15:40:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:37,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:40:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:37,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 15:40:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:37,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 15:40:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:37,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:37,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:37,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 15:40:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:37,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 15:40:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:37,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 15:40:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-21 15:40:37,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:37,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026446714] [2021-12-21 15:40:37,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026446714] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:40:37,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484208729] [2021-12-21 15:40:37,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:37,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:40:37,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:40:37,335 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) [2021-12-21 15:40:37,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 15:40:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:37,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 15:40:37,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:40:37,894 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-21 15:40:37,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:40:37,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484208729] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:37,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:40:37,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-21 15:40:37,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300046111] [2021-12-21 15:40:37,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:37,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 15:40:37,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:37,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 15:40:37,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:40:37,896 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) [2021-12-21 15:40:38,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:38,202 INFO L93 Difference]: Finished difference Result 16288 states and 22354 transitions. [2021-12-21 15:40:38,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 15:40:38,202 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 [2021-12-21 15:40:38,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:38,219 INFO L225 Difference]: With dead ends: 16288 [2021-12-21 15:40:38,219 INFO L226 Difference]: Without dead ends: 8174 [2021-12-21 15:40:38,232 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 [2021-12-21 15:40:38,233 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 [2021-12-21 15:40:38,234 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] [2021-12-21 15:40:38,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8174 states. [2021-12-21 15:40:38,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8174 to 8158. [2021-12-21 15:40:38,599 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) [2021-12-21 15:40:38,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8158 states to 8158 states and 11183 transitions. [2021-12-21 15:40:38,620 INFO L78 Accepts]: Start accepts. Automaton has 8158 states and 11183 transitions. Word has length 108 [2021-12-21 15:40:38,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:38,621 INFO L470 AbstractCegarLoop]: Abstraction has 8158 states and 11183 transitions. [2021-12-21 15:40:38,621 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) [2021-12-21 15:40:38,621 INFO L276 IsEmpty]: Start isEmpty. Operand 8158 states and 11183 transitions. [2021-12-21 15:40:38,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-21 15:40:38,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:38,623 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] [2021-12-21 15:40:38,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 15:40:38,835 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 [2021-12-21 15:40:38,835 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:38,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:38,836 INFO L85 PathProgramCache]: Analyzing trace with hash 920282283, now seen corresponding path program 1 times [2021-12-21 15:40:38,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:38,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909411254] [2021-12-21 15:40:38,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:38,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 15:40:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 15:40:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 15:40:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 15:40:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 15:40:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:39,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:39,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:39,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 15:40:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:39,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 15:40:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:39,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 15:40:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:39,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 15:40:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:39,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 15:40:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:39,037 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-21 15:40:39,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:39,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909411254] [2021-12-21 15:40:39,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909411254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:39,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:39,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 15:40:39,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484602931] [2021-12-21 15:40:39,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:39,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 15:40:39,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:39,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 15:40:39,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:40:39,039 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) [2021-12-21 15:40:43,740 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 15:40:44,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:44,841 INFO L93 Difference]: Finished difference Result 18980 states and 26789 transitions. [2021-12-21 15:40:44,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:40:44,842 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 [2021-12-21 15:40:44,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:44,874 INFO L225 Difference]: With dead ends: 18980 [2021-12-21 15:40:44,874 INFO L226 Difference]: Without dead ends: 12202 [2021-12-21 15:40:44,892 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 [2021-12-21 15:40:44,892 INFO L933 BasicCegarLoop]: 793 mSDtfsCounter, 505 mSDsluCounter, 3295 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s 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, 5.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:44,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 4088 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-12-21 15:40:44,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12202 states. [2021-12-21 15:40:45,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12202 to 7987. [2021-12-21 15:40:45,325 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) [2021-12-21 15:40:45,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7987 states to 7987 states and 10938 transitions. [2021-12-21 15:40:45,345 INFO L78 Accepts]: Start accepts. Automaton has 7987 states and 10938 transitions. Word has length 120 [2021-12-21 15:40:45,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:45,345 INFO L470 AbstractCegarLoop]: Abstraction has 7987 states and 10938 transitions. [2021-12-21 15:40:45,346 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) [2021-12-21 15:40:45,346 INFO L276 IsEmpty]: Start isEmpty. Operand 7987 states and 10938 transitions. [2021-12-21 15:40:45,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-21 15:40:45,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:45,348 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] [2021-12-21 15:40:45,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-21 15:40:45,348 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:45,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:45,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2053204873, now seen corresponding path program 1 times [2021-12-21 15:40:45,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:45,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396822231] [2021-12-21 15:40:45,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:45,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:45,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:45,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:40:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:45,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:40:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:45,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:45,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:45,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:40:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:45,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:45,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:45,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 15:40:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:45,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:40:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:45,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 15:40:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:45,580 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 15:40:45,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:45,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396822231] [2021-12-21 15:40:45,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396822231] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:45,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:45,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-21 15:40:45,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350006064] [2021-12-21 15:40:45,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:45,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-21 15:40:45,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:45,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-21 15:40:45,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-21 15:40:45,585 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) [2021-12-21 15:40:47,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:47,651 INFO L93 Difference]: Finished difference Result 15028 states and 21199 transitions. [2021-12-21 15:40:47,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-21 15:40:47,652 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 [2021-12-21 15:40:47,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:47,672 INFO L225 Difference]: With dead ends: 15028 [2021-12-21 15:40:47,673 INFO L226 Difference]: Without dead ends: 10127 [2021-12-21 15:40:47,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2021-12-21 15:40:47,684 INFO L933 BasicCegarLoop]: 798 mSDtfsCounter, 559 mSDsluCounter, 6640 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 7438 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 [2021-12-21 15:40:47,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 7438 Invalid, 1955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 1643 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 15:40:47,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10127 states. [2021-12-21 15:40:48,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10127 to 7133. [2021-12-21 15:40:48,055 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) [2021-12-21 15:40:48,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7133 states to 7133 states and 9709 transitions. [2021-12-21 15:40:48,072 INFO L78 Accepts]: Start accepts. Automaton has 7133 states and 9709 transitions. Word has length 104 [2021-12-21 15:40:48,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:48,073 INFO L470 AbstractCegarLoop]: Abstraction has 7133 states and 9709 transitions. [2021-12-21 15:40:48,073 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) [2021-12-21 15:40:48,073 INFO L276 IsEmpty]: Start isEmpty. Operand 7133 states and 9709 transitions. [2021-12-21 15:40:48,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-21 15:40:48,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:48,075 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] [2021-12-21 15:40:48,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-21 15:40:48,076 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:48,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:48,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1247847667, now seen corresponding path program 1 times [2021-12-21 15:40:48,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:48,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716362409] [2021-12-21 15:40:48,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:48,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-21 15:40:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 15:40:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-21 15:40:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:40:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 15:40:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:40:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 15:40:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 15:40:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 15:40:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,237 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-21 15:40:48,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:48,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716362409] [2021-12-21 15:40:48,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716362409] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:40:48,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353855526] [2021-12-21 15:40:48,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:48,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:40:48,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:40:48,240 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) [2021-12-21 15:40:48,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 15:40:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 1567 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 15:40:48,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:40:48,845 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-21 15:40:48,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:40:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-21 15:40:49,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353855526] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:40:49,006 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:40:49,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 13 [2021-12-21 15:40:49,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849389754] [2021-12-21 15:40:49,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:40:49,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-21 15:40:49,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:49,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-21 15:40:49,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-12-21 15:40:49,008 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) [2021-12-21 15:40:53,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 15:40:53,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:53,630 INFO L93 Difference]: Finished difference Result 14665 states and 19980 transitions. [2021-12-21 15:40:53,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 15:40:53,630 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 [2021-12-21 15:40:53,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted.