./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.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 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 07:57:03,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 07:57:03,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 07:57:03,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 07:57:03,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 07:57:03,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 07:57:03,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 07:57:03,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 07:57:03,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 07:57:03,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 07:57:03,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 07:57:03,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 07:57:03,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 07:57:03,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 07:57:03,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 07:57:03,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 07:57:03,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 07:57:03,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 07:57:03,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 07:57:03,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 07:57:03,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 07:57:03,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 07:57:03,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 07:57:03,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 07:57:03,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 07:57:03,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 07:57:03,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 07:57:03,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 07:57:03,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 07:57:03,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 07:57:03,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 07:57:03,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 07:57:03,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 07:57:03,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 07:57:03,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 07:57:03,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 07:57:03,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 07:57:03,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 07:57:03,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 07:57:03,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 07:57:03,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 07:57:03,668 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 07:57:03,694 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 07:57:03,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 07:57:03,694 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 07:57:03,694 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 07:57:03,695 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 07:57:03,695 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 07:57:03,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 07:57:03,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 07:57:03,696 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 07:57:03,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 07:57:03,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 07:57:03,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 07:57:03,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 07:57:03,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 07:57:03,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 07:57:03,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 07:57:03,697 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 07:57:03,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 07:57:03,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 07:57:03,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 07:57:03,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 07:57:03,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 07:57:03,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 07:57:03,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 07:57:03,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 07:57:03,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 07:57:03,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 07:57:03,699 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 07:57:03,699 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 07:57:03,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 07:57:03,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 07:57:03,699 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 [2021-12-18 07:57:03,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 07:57:03,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 07:57:03,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 07:57:03,910 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 07:57:03,910 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 07:57:03,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-12-18 07:57:03,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cc1aae70/c2385a22f71743869b16cb85ff6ebcd9/FLAGae26150cd [2021-12-18 07:57:04,542 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 07:57:04,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-12-18 07:57:04,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cc1aae70/c2385a22f71743869b16cb85ff6ebcd9/FLAGae26150cd [2021-12-18 07:57:04,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cc1aae70/c2385a22f71743869b16cb85ff6ebcd9 [2021-12-18 07:57:04,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 07:57:04,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 07:57:04,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 07:57:04,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 07:57:04,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 07:57:04,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:57:04" (1/1) ... [2021-12-18 07:57:04,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bcf9403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:57:04, skipping insertion in model container [2021-12-18 07:57:04,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:57:04" (1/1) ... [2021-12-18 07:57:04,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 07:57:05,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 07:57:06,090 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2021-12-18 07:57:06,183 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 07:57:06,202 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 07:57:06,428 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2021-12-18 07:57:06,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 07:57:06,515 INFO L208 MainTranslator]: Completed translation [2021-12-18 07:57:06,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:57:06 WrapperNode [2021-12-18 07:57:06,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 07:57:06,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 07:57:06,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 07:57:06,517 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 07:57:06,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:57:06" (1/1) ... [2021-12-18 07:57:06,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:57:06" (1/1) ... [2021-12-18 07:57:06,671 INFO L137 Inliner]: procedures = 250, calls = 1509, calls flagged for inlining = 86, calls inlined = 78, statements flattened = 3248 [2021-12-18 07:57:06,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 07:57:06,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 07:57:06,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 07:57:06,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 07:57:06,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:57:06" (1/1) ... [2021-12-18 07:57:06,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:57:06" (1/1) ... [2021-12-18 07:57:06,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:57:06" (1/1) ... [2021-12-18 07:57:06,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:57:06" (1/1) ... [2021-12-18 07:57:06,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:57:06" (1/1) ... [2021-12-18 07:57:06,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:57:06" (1/1) ... [2021-12-18 07:57:06,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:57:06" (1/1) ... [2021-12-18 07:57:06,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 07:57:06,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 07:57:06,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 07:57:06,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 07:57:06,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:57:06" (1/1) ... [2021-12-18 07:57:06,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 07:57:06,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 07:57:06,892 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) [2021-12-18 07:57:06,911 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 [2021-12-18 07:57:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-12-18 07:57:06,922 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-12-18 07:57:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-18 07:57:06,922 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-18 07:57:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure uas_zap_pending [2021-12-18 07:57:06,922 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_zap_pending [2021-12-18 07:57:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 07:57:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 07:57:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 07:57:06,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 07:57:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-18 07:57:06,923 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-18 07:57:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-12-18 07:57:06,923 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-12-18 07:57:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure uas_alloc_data_urb [2021-12-18 07:57:06,924 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_alloc_data_urb [2021-12-18 07:57:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 07:57:06,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 07:57:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-12-18 07:57:06,924 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-12-18 07:57:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-18 07:57:06,924 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-18 07:57:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 07:57:06,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 07:57:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure uas_add_work [2021-12-18 07:57:06,925 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_add_work [2021-12-18 07:57:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2021-12-18 07:57:06,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2021-12-18 07:57:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-18 07:57:06,925 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-18 07:57:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 07:57:06,925 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 07:57:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_endpoints [2021-12-18 07:57:06,926 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_endpoints [2021-12-18 07:57:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-18 07:57:06,926 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-18 07:57:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure uas_log_cmd_state [2021-12-18 07:57:06,926 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_log_cmd_state [2021-12-18 07:57:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 07:57:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-18 07:57:06,927 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-18 07:57:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2021-12-18 07:57:06,927 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2021-12-18 07:57:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_urb [2021-12-18 07:57:06,927 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_urb [2021-12-18 07:57:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 07:57:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2021-12-18 07:57:06,928 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2021-12-18 07:57:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-12-18 07:57:06,928 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-12-18 07:57:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-18 07:57:06,928 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-18 07:57:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure uas_xfer_data [2021-12-18 07:57:06,928 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_xfer_data [2021-12-18 07:57:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2021-12-18 07:57:06,929 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2021-12-18 07:57:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wait_anchor_empty_timeout [2021-12-18 07:57:06,930 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wait_anchor_empty_timeout [2021-12-18 07:57:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 07:57:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 07:57:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure uas_try_complete [2021-12-18 07:57:06,930 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_try_complete [2021-12-18 07:57:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_report_bus_reset [2021-12-18 07:57:06,931 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_report_bus_reset [2021-12-18 07:57:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-18 07:57:06,931 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-18 07:57:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-12-18 07:57:06,931 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-12-18 07:57:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-18 07:57:06,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-18 07:57:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-18 07:57:06,932 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-18 07:57:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure uas_wait_for_pending_cmnds [2021-12-18 07:57:06,932 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_wait_for_pending_cmnds [2021-12-18 07:57:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2021-12-18 07:57:06,932 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2021-12-18 07:57:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-18 07:57:06,932 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-18 07:57:06,933 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-18 07:57:06,933 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-18 07:57:06,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 07:57:06,933 INFO L130 BoogieDeclarations]: Found specification of procedure uas_data_cmplt [2021-12-18 07:57:06,933 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_data_cmplt [2021-12-18 07:57:06,933 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-18 07:57:06,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-18 07:57:06,933 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2021-12-18 07:57:06,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2021-12-18 07:57:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 07:57:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure uas_shutdown [2021-12-18 07:57:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_shutdown [2021-12-18 07:57:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 07:57:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2021-12-18 07:57:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2021-12-18 07:57:06,935 INFO L130 BoogieDeclarations]: Found specification of procedure uas_do_work [2021-12-18 07:57:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_do_work [2021-12-18 07:57:06,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-18 07:57:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-18 07:57:06,935 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-18 07:57:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-18 07:57:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-18 07:57:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-18 07:57:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure uas_disconnect [2021-12-18 07:57:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_disconnect [2021-12-18 07:57:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2021-12-18 07:57:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2021-12-18 07:57:06,937 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2021-12-18 07:57:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2021-12-18 07:57:06,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 07:57:06,937 INFO L130 BoogieDeclarations]: Found specification of procedure usb_pipe_endpoint [2021-12-18 07:57:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_pipe_endpoint [2021-12-18 07:57:06,937 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_out [2021-12-18 07:57:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_out [2021-12-18 07:57:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 07:57:06,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 07:57:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-18 07:57:06,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-18 07:57:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure uas_stat_cmplt [2021-12-18 07:57:06,939 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_stat_cmplt [2021-12-18 07:57:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 07:57:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 07:57:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2021-12-18 07:57:06,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2021-12-18 07:57:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-18 07:57:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-18 07:57:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 07:57:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 07:57:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 07:57:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2021-12-18 07:57:06,946 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2021-12-18 07:57:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure uas_configure_endpoints [2021-12-18 07:57:06,947 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_configure_endpoints [2021-12-18 07:57:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-18 07:57:06,947 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-18 07:57:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_unsubmitted_urbs [2021-12-18 07:57:06,947 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_unsubmitted_urbs [2021-12-18 07:57:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_uas_alt_setting [2021-12-18 07:57:06,947 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_uas_alt_setting [2021-12-18 07:57:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-12-18 07:57:06,947 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-12-18 07:57:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_in [2021-12-18 07:57:06,948 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_in [2021-12-18 07:57:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-18 07:57:06,948 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-18 07:57:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-12-18 07:57:06,948 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-12-18 07:57:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure uas_submit_urbs [2021-12-18 07:57:06,948 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_submit_urbs [2021-12-18 07:57:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2021-12-18 07:57:06,948 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2021-12-18 07:57:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2021-12-18 07:57:06,949 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2021-12-18 07:57:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 07:57:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_streams [2021-12-18 07:57:06,949 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_streams [2021-12-18 07:57:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-12-18 07:57:06,949 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-12-18 07:57:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 07:57:06,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 07:57:07,442 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 07:57:07,446 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 07:57:07,653 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 07:57:09,029 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 07:57:09,044 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 07:57:09,044 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 07:57:09,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:57:09 BoogieIcfgContainer [2021-12-18 07:57:09,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 07:57:09,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 07:57:09,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 07:57:09,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 07:57:09,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 07:57:04" (1/3) ... [2021-12-18 07:57:09,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637d7da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:57:09, skipping insertion in model container [2021-12-18 07:57:09,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:57:06" (2/3) ... [2021-12-18 07:57:09,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637d7da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:57:09, skipping insertion in model container [2021-12-18 07:57:09,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:57:09" (3/3) ... [2021-12-18 07:57:09,052 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-12-18 07:57:09,056 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 07:57:09,056 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 07:57:09,096 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 07:57:09,101 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 [2021-12-18 07:57:09,102 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 07:57:09,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 1102 states, 769 states have (on average 1.340702210663199) internal successors, (1031), 808 states have internal predecessors, (1031), 261 states have call successors, (261), 71 states have call predecessors, (261), 70 states have return successors, (255), 247 states have call predecessors, (255), 255 states have call successors, (255) [2021-12-18 07:57:09,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-18 07:57:09,147 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:57:09,147 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:57:09,148 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:57:09,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:57:09,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1451204405, now seen corresponding path program 1 times [2021-12-18 07:57:09,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:57:09,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593971066] [2021-12-18 07:57:09,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:57:09,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:57:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:09,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:57:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:09,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:09,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:09,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:57:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:09,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:09,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:09,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 07:57:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:09,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:09,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:09,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 07:57:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:09,789 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-18 07:57:09,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:57:09,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593971066] [2021-12-18 07:57:09,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593971066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:57:09,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:57:09,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 07:57:09,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675354273] [2021-12-18 07:57:09,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:57:09,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 07:57:09,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:57:09,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 07:57:09,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 07:57:09,825 INFO L87 Difference]: Start difference. First operand has 1102 states, 769 states have (on average 1.340702210663199) internal successors, (1031), 808 states have internal predecessors, (1031), 261 states have call successors, (261), 71 states have call predecessors, (261), 70 states have return successors, (255), 247 states have call predecessors, (255), 255 states have call successors, (255) Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 07:57:12,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:57:12,461 INFO L93 Difference]: Finished difference Result 2518 states and 3693 transitions. [2021-12-18 07:57:12,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 07:57:12,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2021-12-18 07:57:12,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:57:12,491 INFO L225 Difference]: With dead ends: 2518 [2021-12-18 07:57:12,491 INFO L226 Difference]: Without dead ends: 1408 [2021-12-18 07:57:12,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-18 07:57:12,506 INFO L933 BasicCegarLoop]: 1407 mSDtfsCounter, 1202 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-18 07:57:12,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1225 Valid, 2540 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-18 07:57:12,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2021-12-18 07:57:12,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1089. [2021-12-18 07:57:12,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 764 states have (on average 1.331151832460733) internal successors, (1017), 795 states have internal predecessors, (1017), 255 states have call successors, (255), 70 states have call predecessors, (255), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2021-12-18 07:57:12,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1521 transitions. [2021-12-18 07:57:12,625 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1521 transitions. Word has length 72 [2021-12-18 07:57:12,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:57:12,625 INFO L470 AbstractCegarLoop]: Abstraction has 1089 states and 1521 transitions. [2021-12-18 07:57:12,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 07:57:12,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1521 transitions. [2021-12-18 07:57:12,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-18 07:57:12,634 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:57:12,634 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:57:12,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 07:57:12,634 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:57:12,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:57:12,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1504907311, now seen corresponding path program 1 times [2021-12-18 07:57:12,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:57:12,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412692518] [2021-12-18 07:57:12,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:57:12,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:57:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:12,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:57:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:12,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:12,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:12,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:57:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:12,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:12,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:12,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 07:57:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:12,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:12,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:12,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 07:57:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:12,911 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-18 07:57:12,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:57:12,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412692518] [2021-12-18 07:57:12,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412692518] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:57:12,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:57:12,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 07:57:12,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730416193] [2021-12-18 07:57:12,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:57:12,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 07:57:12,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:57:12,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 07:57:12,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 07:57:12,917 INFO L87 Difference]: Start difference. First operand 1089 states and 1521 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-18 07:57:17,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:57:17,988 INFO L93 Difference]: Finished difference Result 3860 states and 5570 transitions. [2021-12-18 07:57:17,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 07:57:17,989 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 72 [2021-12-18 07:57:17,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:57:18,003 INFO L225 Difference]: With dead ends: 3860 [2021-12-18 07:57:18,004 INFO L226 Difference]: Without dead ends: 2784 [2021-12-18 07:57:18,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 07:57:18,008 INFO L933 BasicCegarLoop]: 1562 mSDtfsCounter, 3599 mSDsluCounter, 2853 mSDsCounter, 0 mSdLazyCounter, 2735 mSolverCounterSat, 2044 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3780 SdHoareTripleChecker+Valid, 4415 SdHoareTripleChecker+Invalid, 4779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2044 IncrementalHoareTripleChecker+Valid, 2735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-18 07:57:18,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3780 Valid, 4415 Invalid, 4779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2044 Valid, 2735 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-18 07:57:18,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2021-12-18 07:57:18,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 2142. [2021-12-18 07:57:18,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2142 states, 1504 states have (on average 1.331781914893617) internal successors, (2003), 1561 states have internal predecessors, (2003), 499 states have call successors, (499), 139 states have call predecessors, (499), 138 states have return successors, (493), 477 states have call predecessors, (493), 493 states have call successors, (493) [2021-12-18 07:57:18,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 2995 transitions. [2021-12-18 07:57:18,085 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 2995 transitions. Word has length 72 [2021-12-18 07:57:18,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:57:18,086 INFO L470 AbstractCegarLoop]: Abstraction has 2142 states and 2995 transitions. [2021-12-18 07:57:18,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-18 07:57:18,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 2995 transitions. [2021-12-18 07:57:18,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-18 07:57:18,090 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:57:18,091 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:57:18,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 07:57:18,091 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:57:18,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:57:18,091 INFO L85 PathProgramCache]: Analyzing trace with hash -508395570, now seen corresponding path program 1 times [2021-12-18 07:57:18,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:57:18,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105193991] [2021-12-18 07:57:18,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:57:18,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:57:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:18,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:57:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:18,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:18,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:18,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:57:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:18,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:18,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:18,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 07:57:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:18,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:18,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:18,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 07:57:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:18,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 07:57:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-18 07:57:18,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:57:18,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105193991] [2021-12-18 07:57:18,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105193991] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:57:18,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:57:18,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 07:57:18,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554059391] [2021-12-18 07:57:18,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:57:18,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 07:57:18,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:57:18,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 07:57:18,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 07:57:18,356 INFO L87 Difference]: Start difference. First operand 2142 states and 2995 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 07:57:21,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:57:21,888 INFO L93 Difference]: Finished difference Result 7343 states and 10595 transitions. [2021-12-18 07:57:21,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 07:57:21,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 81 [2021-12-18 07:57:21,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:57:21,912 INFO L225 Difference]: With dead ends: 7343 [2021-12-18 07:57:21,913 INFO L226 Difference]: Without dead ends: 5224 [2021-12-18 07:57:21,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 07:57:21,921 INFO L933 BasicCegarLoop]: 1755 mSDtfsCounter, 4166 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 2577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4306 SdHoareTripleChecker+Valid, 3586 SdHoareTripleChecker+Invalid, 4181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2577 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-18 07:57:21,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4306 Valid, 3586 Invalid, 4181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2577 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-18 07:57:21,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5224 states. [2021-12-18 07:57:22,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5224 to 4147. [2021-12-18 07:57:22,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4147 states, 2900 states have (on average 1.3348275862068966) internal successors, (3871), 3023 states have internal predecessors, (3871), 970 states have call successors, (970), 263 states have call predecessors, (970), 276 states have return successors, (1034), 932 states have call predecessors, (1034), 964 states have call successors, (1034) [2021-12-18 07:57:22,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 5875 transitions. [2021-12-18 07:57:22,058 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 5875 transitions. Word has length 81 [2021-12-18 07:57:22,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:57:22,059 INFO L470 AbstractCegarLoop]: Abstraction has 4147 states and 5875 transitions. [2021-12-18 07:57:22,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 07:57:22,060 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 5875 transitions. [2021-12-18 07:57:22,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-18 07:57:22,062 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:57:22,062 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:57:22,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 07:57:22,063 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:57:22,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:57:22,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1513391935, now seen corresponding path program 1 times [2021-12-18 07:57:22,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:57:22,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303582905] [2021-12-18 07:57:22,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:57:22,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:57:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:22,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:57:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:22,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:22,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:22,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:57:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:22,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:22,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:22,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 07:57:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:22,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:22,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:22,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 07:57:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:22,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 07:57:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:22,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:22,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:22,350 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-18 07:57:22,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:57:22,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303582905] [2021-12-18 07:57:22,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303582905] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:57:22,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:57:22,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 07:57:22,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124673763] [2021-12-18 07:57:22,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:57:22,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 07:57:22,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:57:22,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 07:57:22,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 07:57:22,357 INFO L87 Difference]: Start difference. First operand 4147 states and 5875 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-18 07:57:24,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:57:24,282 INFO L93 Difference]: Finished difference Result 5205 states and 7604 transitions. [2021-12-18 07:57:24,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 07:57:24,284 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 92 [2021-12-18 07:57:24,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:57:24,311 INFO L225 Difference]: With dead ends: 5205 [2021-12-18 07:57:24,311 INFO L226 Difference]: Without dead ends: 5194 [2021-12-18 07:57:24,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 07:57:24,316 INFO L933 BasicCegarLoop]: 1388 mSDtfsCounter, 3122 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 1660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3281 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1660 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-18 07:57:24,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3281 Valid, 2038 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1660 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-18 07:57:24,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5194 states. [2021-12-18 07:57:24,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5194 to 4147. [2021-12-18 07:57:24,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4147 states, 2900 states have (on average 1.3341379310344827) internal successors, (3869), 3023 states have internal predecessors, (3869), 970 states have call successors, (970), 263 states have call predecessors, (970), 276 states have return successors, (1034), 932 states have call predecessors, (1034), 964 states have call successors, (1034) [2021-12-18 07:57:24,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 5873 transitions. [2021-12-18 07:57:24,484 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 5873 transitions. Word has length 92 [2021-12-18 07:57:24,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:57:24,486 INFO L470 AbstractCegarLoop]: Abstraction has 4147 states and 5873 transitions. [2021-12-18 07:57:24,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-18 07:57:24,487 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 5873 transitions. [2021-12-18 07:57:24,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-18 07:57:24,488 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:57:24,489 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:57:24,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 07:57:24,489 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:57:24,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:57:24,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1456133633, now seen corresponding path program 1 times [2021-12-18 07:57:24,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:57:24,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110290361] [2021-12-18 07:57:24,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:57:24,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:57:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:24,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:57:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:24,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:24,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:24,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:57:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:24,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:24,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:24,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 07:57:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:24,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:24,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:24,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 07:57:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:24,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 07:57:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:24,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:24,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-18 07:57:24,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:57:24,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110290361] [2021-12-18 07:57:24,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110290361] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:57:24,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:57:24,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 07:57:24,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549996091] [2021-12-18 07:57:24,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:57:24,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 07:57:24,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:57:24,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 07:57:24,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 07:57:24,726 INFO L87 Difference]: Start difference. First operand 4147 states and 5873 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 07:57:27,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:57:27,723 INFO L93 Difference]: Finished difference Result 5185 states and 7577 transitions. [2021-12-18 07:57:27,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 07:57:27,724 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 92 [2021-12-18 07:57:27,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:57:27,746 INFO L225 Difference]: With dead ends: 5185 [2021-12-18 07:57:27,746 INFO L226 Difference]: Without dead ends: 5182 [2021-12-18 07:57:27,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-18 07:57:27,749 INFO L933 BasicCegarLoop]: 1382 mSDtfsCounter, 2494 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 1154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2653 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1154 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-18 07:57:27,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2653 Valid, 3005 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1154 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-18 07:57:27,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5182 states. [2021-12-18 07:57:27,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5182 to 4146. [2021-12-18 07:57:27,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4146 states, 2900 states have (on average 1.333793103448276) internal successors, (3868), 3022 states have internal predecessors, (3868), 969 states have call successors, (969), 263 states have call predecessors, (969), 276 states have return successors, (1034), 932 states have call predecessors, (1034), 964 states have call successors, (1034) [2021-12-18 07:57:27,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4146 states to 4146 states and 5871 transitions. [2021-12-18 07:57:27,904 INFO L78 Accepts]: Start accepts. Automaton has 4146 states and 5871 transitions. Word has length 92 [2021-12-18 07:57:27,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:57:27,904 INFO L470 AbstractCegarLoop]: Abstraction has 4146 states and 5871 transitions. [2021-12-18 07:57:27,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 07:57:27,906 INFO L276 IsEmpty]: Start isEmpty. Operand 4146 states and 5871 transitions. [2021-12-18 07:57:27,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-18 07:57:27,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:57:27,908 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:57:27,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 07:57:27,909 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:57:27,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:57:27,909 INFO L85 PathProgramCache]: Analyzing trace with hash 2104052202, now seen corresponding path program 1 times [2021-12-18 07:57:27,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:57:27,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647003734] [2021-12-18 07:57:27,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:57:27,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:57:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:28,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:57:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:28,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:28,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:28,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:57:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:28,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:28,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:28,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 07:57:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:28,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:28,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:28,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 07:57:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:28,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 07:57:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:28,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:28,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-18 07:57:28,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:57:28,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647003734] [2021-12-18 07:57:28,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647003734] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:57:28,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:57:28,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 07:57:28,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207894492] [2021-12-18 07:57:28,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:57:28,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 07:57:28,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:57:28,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 07:57:28,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 07:57:28,157 INFO L87 Difference]: Start difference. First operand 4146 states and 5871 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 07:57:30,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:57:30,275 INFO L93 Difference]: Finished difference Result 5184 states and 7575 transitions. [2021-12-18 07:57:30,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 07:57:30,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 93 [2021-12-18 07:57:30,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:57:30,316 INFO L225 Difference]: With dead ends: 5184 [2021-12-18 07:57:30,316 INFO L226 Difference]: Without dead ends: 5181 [2021-12-18 07:57:30,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-18 07:57:30,318 INFO L933 BasicCegarLoop]: 1384 mSDtfsCounter, 2496 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 1174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2654 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 2273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1174 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-18 07:57:30,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2654 Valid, 2523 Invalid, 2273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1174 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-18 07:57:30,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5181 states. [2021-12-18 07:57:30,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5181 to 4145. [2021-12-18 07:57:30,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4145 states, 2900 states have (on average 1.333448275862069) internal successors, (3867), 3021 states have internal predecessors, (3867), 968 states have call successors, (968), 263 states have call predecessors, (968), 276 states have return successors, (1034), 932 states have call predecessors, (1034), 964 states have call successors, (1034) [2021-12-18 07:57:30,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 5869 transitions. [2021-12-18 07:57:30,476 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 5869 transitions. Word has length 93 [2021-12-18 07:57:30,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:57:30,477 INFO L470 AbstractCegarLoop]: Abstraction has 4145 states and 5869 transitions. [2021-12-18 07:57:30,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 07:57:30,478 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 5869 transitions. [2021-12-18 07:57:30,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-18 07:57:30,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:57:30,479 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:57:30,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 07:57:30,479 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:57:30,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:57:30,480 INFO L85 PathProgramCache]: Analyzing trace with hash 800668258, now seen corresponding path program 1 times [2021-12-18 07:57:30,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:57:30,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865068924] [2021-12-18 07:57:30,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:57:30,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:57:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:30,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:57:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:30,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:30,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:30,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:57:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:30,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:30,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:30,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 07:57:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:30,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:30,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:30,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 07:57:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:30,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 07:57:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:30,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:30,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:30,668 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-18 07:57:30,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:57:30,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865068924] [2021-12-18 07:57:30,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865068924] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:57:30,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:57:30,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 07:57:30,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639588138] [2021-12-18 07:57:30,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:57:30,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 07:57:30,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:57:30,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 07:57:30,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 07:57:30,670 INFO L87 Difference]: Start difference. First operand 4145 states and 5869 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 07:57:33,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:57:33,017 INFO L93 Difference]: Finished difference Result 5183 states and 7573 transitions. [2021-12-18 07:57:33,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 07:57:33,018 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 94 [2021-12-18 07:57:33,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:57:33,044 INFO L225 Difference]: With dead ends: 5183 [2021-12-18 07:57:33,044 INFO L226 Difference]: Without dead ends: 5180 [2021-12-18 07:57:33,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-18 07:57:33,048 INFO L933 BasicCegarLoop]: 1367 mSDtfsCounter, 2600 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 1227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2758 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 2314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1227 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-18 07:57:33,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2758 Valid, 2474 Invalid, 2314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1227 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-18 07:57:33,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5180 states. [2021-12-18 07:57:33,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5180 to 4144. [2021-12-18 07:57:33,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4144 states, 2900 states have (on average 1.3331034482758621) internal successors, (3866), 3020 states have internal predecessors, (3866), 967 states have call successors, (967), 263 states have call predecessors, (967), 276 states have return successors, (1034), 932 states have call predecessors, (1034), 964 states have call successors, (1034) [2021-12-18 07:57:33,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4144 states to 4144 states and 5867 transitions. [2021-12-18 07:57:33,185 INFO L78 Accepts]: Start accepts. Automaton has 4144 states and 5867 transitions. Word has length 94 [2021-12-18 07:57:33,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:57:33,185 INFO L470 AbstractCegarLoop]: Abstraction has 4144 states and 5867 transitions. [2021-12-18 07:57:33,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 07:57:33,185 INFO L276 IsEmpty]: Start isEmpty. Operand 4144 states and 5867 transitions. [2021-12-18 07:57:33,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-18 07:57:33,187 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:57:33,187 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:57:33,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 07:57:33,188 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:57:33,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:57:33,188 INFO L85 PathProgramCache]: Analyzing trace with hash -949523475, now seen corresponding path program 1 times [2021-12-18 07:57:33,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:57:33,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45222275] [2021-12-18 07:57:33,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:57:33,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:57:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:33,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:57:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:33,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:33,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:33,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:57:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:33,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:33,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:33,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 07:57:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:33,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:33,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:33,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 07:57:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:33,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 07:57:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:33,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:33,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-18 07:57:33,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:57:33,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45222275] [2021-12-18 07:57:33,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45222275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:57:33,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:57:33,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 07:57:33,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502513038] [2021-12-18 07:57:33,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:57:33,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 07:57:33,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:57:33,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 07:57:33,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 07:57:33,383 INFO L87 Difference]: Start difference. First operand 4144 states and 5867 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 07:57:38,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:57:38,016 INFO L93 Difference]: Finished difference Result 14438 states and 20932 transitions. [2021-12-18 07:57:38,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 07:57:38,017 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 95 [2021-12-18 07:57:38,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:57:38,054 INFO L225 Difference]: With dead ends: 14438 [2021-12-18 07:57:38,054 INFO L226 Difference]: Without dead ends: 10309 [2021-12-18 07:57:38,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 07:57:38,072 INFO L933 BasicCegarLoop]: 1612 mSDtfsCounter, 3577 mSDsluCounter, 2946 mSDsCounter, 0 mSdLazyCounter, 2743 mSolverCounterSat, 1990 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 4558 SdHoareTripleChecker+Invalid, 4733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1990 IncrementalHoareTripleChecker+Valid, 2743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-18 07:57:38,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3755 Valid, 4558 Invalid, 4733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1990 Valid, 2743 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-18 07:57:38,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10309 states. [2021-12-18 07:57:38,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10309 to 8231. [2021-12-18 07:57:38,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8231 states, 5757 states have (on average 1.3338544380753865) internal successors, (7679), 5996 states have internal predecessors, (7679), 1925 states have call successors, (1925), 523 states have call predecessors, (1925), 548 states have return successors, (2062), 1855 states have call predecessors, (2062), 1922 states have call successors, (2062) [2021-12-18 07:57:38,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8231 states to 8231 states and 11666 transitions. [2021-12-18 07:57:38,398 INFO L78 Accepts]: Start accepts. Automaton has 8231 states and 11666 transitions. Word has length 95 [2021-12-18 07:57:38,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:57:38,399 INFO L470 AbstractCegarLoop]: Abstraction has 8231 states and 11666 transitions. [2021-12-18 07:57:38,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 07:57:38,399 INFO L276 IsEmpty]: Start isEmpty. Operand 8231 states and 11666 transitions. [2021-12-18 07:57:38,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-18 07:57:38,408 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:57:38,409 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-18 07:57:38,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 07:57:38,409 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:57:38,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:57:38,409 INFO L85 PathProgramCache]: Analyzing trace with hash 476400148, now seen corresponding path program 1 times [2021-12-18 07:57:38,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:57:38,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672802371] [2021-12-18 07:57:38,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:57:38,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:57:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:57:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:57:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 07:57:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 07:57:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 07:57:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-18 07:57:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 07:57:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 07:57:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 07:57:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 07:57:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 07:57:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-18 07:57:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 07:57:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-18 07:57:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-18 07:57:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-18 07:57:38,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:57:38,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672802371] [2021-12-18 07:57:38,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672802371] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:57:38,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:57:38,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 07:57:38,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50023633] [2021-12-18 07:57:38,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:57:38,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 07:57:38,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:57:38,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 07:57:38,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-18 07:57:38,655 INFO L87 Difference]: Start difference. First operand 8231 states and 11666 transitions. Second operand has 9 states, 8 states have (on average 11.625) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-18 07:57:45,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:57:45,078 INFO L93 Difference]: Finished difference Result 28672 states and 42244 transitions. [2021-12-18 07:57:45,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-18 07:57:45,080 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.625) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 184 [2021-12-18 07:57:45,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:57:45,174 INFO L225 Difference]: With dead ends: 28672 [2021-12-18 07:57:45,175 INFO L226 Difference]: Without dead ends: 20464 [2021-12-18 07:57:45,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-12-18 07:57:45,210 INFO L933 BasicCegarLoop]: 1874 mSDtfsCounter, 6643 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 3914 mSolverCounterSat, 5361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6797 SdHoareTripleChecker+Valid, 3951 SdHoareTripleChecker+Invalid, 9275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5361 IncrementalHoareTripleChecker+Valid, 3914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-12-18 07:57:45,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6797 Valid, 3951 Invalid, 9275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5361 Valid, 3914 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-12-18 07:57:45,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20464 states. [2021-12-18 07:57:45,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20464 to 15567. [2021-12-18 07:57:45,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15567 states, 10790 states have (on average 1.325023169601483) internal successors, (14297), 11227 states have internal predecessors, (14297), 3725 states have call successors, (3725), 920 states have call predecessors, (3725), 1051 states have return successors, (4350), 3683 states have call predecessors, (4350), 3722 states have call successors, (4350) [2021-12-18 07:57:46,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15567 states to 15567 states and 22372 transitions. [2021-12-18 07:57:46,018 INFO L78 Accepts]: Start accepts. Automaton has 15567 states and 22372 transitions. Word has length 184 [2021-12-18 07:57:46,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:57:46,018 INFO L470 AbstractCegarLoop]: Abstraction has 15567 states and 22372 transitions. [2021-12-18 07:57:46,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.625) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-18 07:57:46,018 INFO L276 IsEmpty]: Start isEmpty. Operand 15567 states and 22372 transitions. [2021-12-18 07:57:46,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-12-18 07:57:46,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:57:46,042 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:57:46,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 07:57:46,042 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:57:46,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:57:46,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1665890952, now seen corresponding path program 1 times [2021-12-18 07:57:46,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:57:46,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123890203] [2021-12-18 07:57:46,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:57:46,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:57:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:57:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:57:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 07:57:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 07:57:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 07:57:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 07:57:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 07:57:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 07:57:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 07:57:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 07:57:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 07:57:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 07:57:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 07:57:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-18 07:57:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-18 07:57:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:46,327 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-12-18 07:57:46,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:57:46,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123890203] [2021-12-18 07:57:46,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123890203] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:57:46,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:57:46,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 07:57:46,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22103413] [2021-12-18 07:57:46,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:57:46,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 07:57:46,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:57:46,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 07:57:46,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-18 07:57:46,329 INFO L87 Difference]: Start difference. First operand 15567 states and 22372 transitions. Second operand has 10 states, 9 states have (on average 12.777777777777779) internal successors, (115), 4 states have internal predecessors, (115), 3 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-18 07:57:52,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:57:52,412 INFO L93 Difference]: Finished difference Result 40432 states and 60707 transitions. [2021-12-18 07:57:52,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 07:57:52,412 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 12.777777777777779) internal successors, (115), 4 states have internal predecessors, (115), 3 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 207 [2021-12-18 07:57:52,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:57:52,552 INFO L225 Difference]: With dead ends: 40432 [2021-12-18 07:57:52,552 INFO L226 Difference]: Without dead ends: 24892 [2021-12-18 07:57:52,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-12-18 07:57:52,613 INFO L933 BasicCegarLoop]: 1814 mSDtfsCounter, 4215 mSDsluCounter, 4460 mSDsCounter, 0 mSdLazyCounter, 5517 mSolverCounterSat, 2909 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4384 SdHoareTripleChecker+Valid, 6274 SdHoareTripleChecker+Invalid, 8426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2909 IncrementalHoareTripleChecker+Valid, 5517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-18 07:57:52,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4384 Valid, 6274 Invalid, 8426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2909 Valid, 5517 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-12-18 07:57:52,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24892 states. [2021-12-18 07:57:53,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24892 to 15583. [2021-12-18 07:57:53,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15583 states, 10806 states have (on average 1.3245419211549139) internal successors, (14313), 11243 states have internal predecessors, (14313), 3725 states have call successors, (3725), 920 states have call predecessors, (3725), 1051 states have return successors, (4350), 3683 states have call predecessors, (4350), 3722 states have call successors, (4350) [2021-12-18 07:57:53,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15583 states to 15583 states and 22388 transitions. [2021-12-18 07:57:53,675 INFO L78 Accepts]: Start accepts. Automaton has 15583 states and 22388 transitions. Word has length 207 [2021-12-18 07:57:53,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:57:53,675 INFO L470 AbstractCegarLoop]: Abstraction has 15583 states and 22388 transitions. [2021-12-18 07:57:53,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 12.777777777777779) internal successors, (115), 4 states have internal predecessors, (115), 3 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-18 07:57:53,676 INFO L276 IsEmpty]: Start isEmpty. Operand 15583 states and 22388 transitions. [2021-12-18 07:57:53,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-12-18 07:57:53,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:57:53,697 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:57:53,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 07:57:53,698 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:57:53,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:57:53,698 INFO L85 PathProgramCache]: Analyzing trace with hash -505516454, now seen corresponding path program 1 times [2021-12-18 07:57:53,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:57:53,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701863613] [2021-12-18 07:57:53,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:57:53,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:57:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:53,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:57:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:53,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:53,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:53,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:57:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:53,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:53,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:53,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 07:57:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:53,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:53,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:53,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 07:57:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:53,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 07:57:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:53,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:57:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:53,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:53,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 07:57:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:53,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 07:57:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:53,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 07:57:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:53,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 07:57:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:53,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 07:57:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:53,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-18 07:57:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:54,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-18 07:57:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:54,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 07:57:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:54,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:57:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:54,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-18 07:57:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:54,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 07:57:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:54,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-18 07:57:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:57:54,033 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-18 07:57:54,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:57:54,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701863613] [2021-12-18 07:57:54,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701863613] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:57:54,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:57:54,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 07:57:54,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775246108] [2021-12-18 07:57:54,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:57:54,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 07:57:54,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:57:54,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 07:57:54,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-18 07:57:54,035 INFO L87 Difference]: Start difference. First operand 15583 states and 22388 transitions. Second operand has 11 states, 10 states have (on average 13.5) internal successors, (135), 5 states have internal predecessors, (135), 3 states have call successors, (20), 8 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-18 07:58:01,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:58:01,609 INFO L93 Difference]: Finished difference Result 36159 states and 53622 transitions. [2021-12-18 07:58:01,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 07:58:01,615 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 13.5) internal successors, (135), 5 states have internal predecessors, (135), 3 states have call successors, (20), 8 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 230 [2021-12-18 07:58:01,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:58:01,720 INFO L225 Difference]: With dead ends: 36159 [2021-12-18 07:58:01,721 INFO L226 Difference]: Without dead ends: 20603 [2021-12-18 07:58:01,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-12-18 07:58:01,783 INFO L933 BasicCegarLoop]: 2128 mSDtfsCounter, 4002 mSDsluCounter, 7242 mSDsCounter, 0 mSdLazyCounter, 7257 mSolverCounterSat, 2744 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 9370 SdHoareTripleChecker+Invalid, 10001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2744 IncrementalHoareTripleChecker+Valid, 7257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-12-18 07:58:01,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4098 Valid, 9370 Invalid, 10001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2744 Valid, 7257 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-12-18 07:58:01,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20603 states. [2021-12-18 07:58:02,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20603 to 13583. [2021-12-18 07:58:02,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13583 states, 9296 states have (on average 1.3146514629948365) internal successors, (12221), 9707 states have internal predecessors, (12221), 3317 states have call successors, (3317), 834 states have call predecessors, (3317), 969 states have return successors, (3878), 3281 states have call predecessors, (3878), 3316 states have call successors, (3878) [2021-12-18 07:58:02,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13583 states to 13583 states and 19416 transitions. [2021-12-18 07:58:02,658 INFO L78 Accepts]: Start accepts. Automaton has 13583 states and 19416 transitions. Word has length 230 [2021-12-18 07:58:02,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:58:02,658 INFO L470 AbstractCegarLoop]: Abstraction has 13583 states and 19416 transitions. [2021-12-18 07:58:02,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 13.5) internal successors, (135), 5 states have internal predecessors, (135), 3 states have call successors, (20), 8 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-18 07:58:02,659 INFO L276 IsEmpty]: Start isEmpty. Operand 13583 states and 19416 transitions. [2021-12-18 07:58:02,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-12-18 07:58:02,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:58:02,694 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:58:02,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-18 07:58:02,694 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:58:02,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:58:02,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1122669254, now seen corresponding path program 1 times [2021-12-18 07:58:02,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:58:02,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015002050] [2021-12-18 07:58:02,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:58:02,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:58:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:58:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:58:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 07:58:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 07:58:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 07:58:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 07:58:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 07:58:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 07:58:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 07:58:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 07:58:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-18 07:58:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-18 07:58:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 07:58:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-18 07:58:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:02,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 07:58:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:03,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-18 07:58:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:03,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-18 07:58:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:03,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-18 07:58:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:03,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-18 07:58:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:03,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-18 07:58:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:03,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-12-18 07:58:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:03,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 07:58:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:03,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-18 07:58:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:03,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:03,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:03,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 07:58:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:03,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-12-18 07:58:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:03,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-18 07:58:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:03,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-12-18 07:58:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:03,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-12-18 07:58:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:03,116 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-18 07:58:03,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:58:03,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015002050] [2021-12-18 07:58:03,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015002050] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:58:03,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:58:03,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 07:58:03,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544289584] [2021-12-18 07:58:03,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:58:03,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 07:58:03,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:58:03,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 07:58:03,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-18 07:58:03,118 INFO L87 Difference]: Start difference. First operand 13583 states and 19416 transitions. Second operand has 10 states, 9 states have (on average 16.11111111111111) internal successors, (145), 3 states have internal predecessors, (145), 4 states have call successors, (34), 9 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-18 07:58:12,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:58:12,533 INFO L93 Difference]: Finished difference Result 18477 states and 27618 transitions. [2021-12-18 07:58:12,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 07:58:12,533 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 16.11111111111111) internal successors, (145), 3 states have internal predecessors, (145), 4 states have call successors, (34), 9 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) Word has length 286 [2021-12-18 07:58:12,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:58:12,595 INFO L225 Difference]: With dead ends: 18477 [2021-12-18 07:58:12,595 INFO L226 Difference]: Without dead ends: 18474 [2021-12-18 07:58:12,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2021-12-18 07:58:12,606 INFO L933 BasicCegarLoop]: 1809 mSDtfsCounter, 5002 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 6018 mSolverCounterSat, 5044 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5088 SdHoareTripleChecker+Valid, 3572 SdHoareTripleChecker+Invalid, 11062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5044 IncrementalHoareTripleChecker+Valid, 6018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-12-18 07:58:12,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5088 Valid, 3572 Invalid, 11062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5044 Valid, 6018 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2021-12-18 07:58:12,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18474 states. [2021-12-18 07:58:13,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18474 to 13583. [2021-12-18 07:58:13,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13583 states, 9296 states have (on average 1.3142211703958693) internal successors, (12217), 9707 states have internal predecessors, (12217), 3317 states have call successors, (3317), 834 states have call predecessors, (3317), 969 states have return successors, (3878), 3281 states have call predecessors, (3878), 3316 states have call successors, (3878) [2021-12-18 07:58:13,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13583 states to 13583 states and 19412 transitions. [2021-12-18 07:58:13,416 INFO L78 Accepts]: Start accepts. Automaton has 13583 states and 19412 transitions. Word has length 286 [2021-12-18 07:58:13,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:58:13,417 INFO L470 AbstractCegarLoop]: Abstraction has 13583 states and 19412 transitions. [2021-12-18 07:58:13,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 16.11111111111111) internal successors, (145), 3 states have internal predecessors, (145), 4 states have call successors, (34), 9 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-18 07:58:13,418 INFO L276 IsEmpty]: Start isEmpty. Operand 13583 states and 19412 transitions. [2021-12-18 07:58:13,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-12-18 07:58:13,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:58:13,445 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:58:13,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 07:58:13,445 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:58:13,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:58:13,445 INFO L85 PathProgramCache]: Analyzing trace with hash 2025564407, now seen corresponding path program 1 times [2021-12-18 07:58:13,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:58:13,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856214977] [2021-12-18 07:58:13,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:58:13,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:58:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:58:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:58:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 07:58:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 07:58:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 07:58:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 07:58:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 07:58:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 07:58:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 07:58:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 07:58:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-18 07:58:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-18 07:58:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 07:58:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-18 07:58:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 07:58:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-18 07:58:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-18 07:58:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-18 07:58:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-18 07:58:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2021-12-18 07:58:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-18 07:58:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-12-18 07:58:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-18 07:58:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 07:58:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-18 07:58:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-12-18 07:58:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-12-18 07:58:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-12-18 07:58:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:13,945 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-12-18 07:58:13,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:58:13,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856214977] [2021-12-18 07:58:13,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856214977] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 07:58:13,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694437600] [2021-12-18 07:58:13,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:58:13,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 07:58:13,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 07:58:13,948 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) [2021-12-18 07:58:13,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 07:58:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:14,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 3759 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 07:58:14,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 07:58:15,177 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-18 07:58:15,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 07:58:15,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694437600] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:58:15,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 07:58:15,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 11 [2021-12-18 07:58:15,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434663536] [2021-12-18 07:58:15,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:58:15,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 07:58:15,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:58:15,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 07:58:15,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-18 07:58:15,179 INFO L87 Difference]: Start difference. First operand 13583 states and 19412 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-18 07:58:15,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:58:15,906 INFO L93 Difference]: Finished difference Result 28395 states and 40811 transitions. [2021-12-18 07:58:15,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 07:58:15,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) Word has length 291 [2021-12-18 07:58:15,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:58:15,972 INFO L225 Difference]: With dead ends: 28395 [2021-12-18 07:58:15,972 INFO L226 Difference]: Without dead ends: 14839 [2021-12-18 07:58:16,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-18 07:58:16,017 INFO L933 BasicCegarLoop]: 1859 mSDtfsCounter, 254 mSDsluCounter, 5272 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 7131 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 07:58:16,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 7131 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 07:58:16,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14839 states. [2021-12-18 07:58:16,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14839 to 13599. [2021-12-18 07:58:16,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13599 states, 9308 states have (on average 1.3138160721959604) internal successors, (12229), 9719 states have internal predecessors, (12229), 3317 states have call successors, (3317), 834 states have call predecessors, (3317), 973 states have return successors, (3886), 3285 states have call predecessors, (3886), 3316 states have call successors, (3886) [2021-12-18 07:58:16,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13599 states to 13599 states and 19432 transitions. [2021-12-18 07:58:16,823 INFO L78 Accepts]: Start accepts. Automaton has 13599 states and 19432 transitions. Word has length 291 [2021-12-18 07:58:16,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:58:16,823 INFO L470 AbstractCegarLoop]: Abstraction has 13599 states and 19432 transitions. [2021-12-18 07:58:16,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-18 07:58:16,824 INFO L276 IsEmpty]: Start isEmpty. Operand 13599 states and 19432 transitions. [2021-12-18 07:58:16,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-12-18 07:58:16,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:58:16,848 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:58:16,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-18 07:58:17,063 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,SelfDestructingSolverStorable12 [2021-12-18 07:58:17,064 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:58:17,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:58:17,064 INFO L85 PathProgramCache]: Analyzing trace with hash 212431025, now seen corresponding path program 1 times [2021-12-18 07:58:17,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:58:17,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409375217] [2021-12-18 07:58:17,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:58:17,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:58:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:58:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:58:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 07:58:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 07:58:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 07:58:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 07:58:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 07:58:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 07:58:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 07:58:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 07:58:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 07:58:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 07:58:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 07:58:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 07:58:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 07:58:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-18 07:58:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-18 07:58:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-18 07:58:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-18 07:58:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-18 07:58:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-18 07:58:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-18 07:58:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-18 07:58:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 07:58:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-18 07:58:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-18 07:58:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-18 07:58:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-12-18 07:58:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:17,498 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-12-18 07:58:17,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:58:17,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409375217] [2021-12-18 07:58:17,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409375217] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:58:17,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:58:17,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 07:58:17,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823889153] [2021-12-18 07:58:17,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:58:17,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 07:58:17,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:58:17,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 07:58:17,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-18 07:58:17,502 INFO L87 Difference]: Start difference. First operand 13599 states and 19432 transitions. Second operand has 11 states, 10 states have (on average 15.7) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (35), 8 states have call predecessors, (35), 2 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-18 07:58:23,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:58:23,780 INFO L93 Difference]: Finished difference Result 33326 states and 49257 transitions. [2021-12-18 07:58:23,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 07:58:23,781 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 15.7) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (35), 8 states have call predecessors, (35), 2 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 298 [2021-12-18 07:58:23,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:58:23,861 INFO L225 Difference]: With dead ends: 33326 [2021-12-18 07:58:23,861 INFO L226 Difference]: Without dead ends: 19754 [2021-12-18 07:58:23,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-12-18 07:58:23,893 INFO L933 BasicCegarLoop]: 1726 mSDtfsCounter, 4100 mSDsluCounter, 4904 mSDsCounter, 0 mSdLazyCounter, 4156 mSolverCounterSat, 3073 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4262 SdHoareTripleChecker+Valid, 6630 SdHoareTripleChecker+Invalid, 7229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3073 IncrementalHoareTripleChecker+Valid, 4156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-18 07:58:23,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4262 Valid, 6630 Invalid, 7229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3073 Valid, 4156 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-12-18 07:58:23,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19754 states. [2021-12-18 07:58:24,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19754 to 13615. [2021-12-18 07:58:24,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13615 states, 9320 states have (on average 1.313412017167382) internal successors, (12241), 9731 states have internal predecessors, (12241), 3317 states have call successors, (3317), 834 states have call predecessors, (3317), 977 states have return successors, (3894), 3289 states have call predecessors, (3894), 3316 states have call successors, (3894) [2021-12-18 07:58:24,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13615 states to 13615 states and 19452 transitions. [2021-12-18 07:58:24,608 INFO L78 Accepts]: Start accepts. Automaton has 13615 states and 19452 transitions. Word has length 298 [2021-12-18 07:58:24,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:58:24,609 INFO L470 AbstractCegarLoop]: Abstraction has 13615 states and 19452 transitions. [2021-12-18 07:58:24,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 15.7) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (35), 8 states have call predecessors, (35), 2 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-18 07:58:24,609 INFO L276 IsEmpty]: Start isEmpty. Operand 13615 states and 19452 transitions. [2021-12-18 07:58:24,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-12-18 07:58:24,630 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:58:24,631 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:58:24,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-18 07:58:24,631 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:58:24,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:58:24,631 INFO L85 PathProgramCache]: Analyzing trace with hash -132484720, now seen corresponding path program 1 times [2021-12-18 07:58:24,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:58:24,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053816110] [2021-12-18 07:58:24,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:58:24,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:58:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:58:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:58:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 07:58:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 07:58:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 07:58:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 07:58:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 07:58:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 07:58:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 07:58:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 07:58:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 07:58:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 07:58:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 07:58:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 07:58:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 07:58:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-18 07:58:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-18 07:58:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-18 07:58:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-18 07:58:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-18 07:58:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-18 07:58:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-18 07:58:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-18 07:58:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 07:58:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-18 07:58:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-18 07:58:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-18 07:58:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-12-18 07:58:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-12-18 07:58:24,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:58:24,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053816110] [2021-12-18 07:58:24,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053816110] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:58:24,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:58:24,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 07:58:24,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761884314] [2021-12-18 07:58:24,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:58:24,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 07:58:24,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:58:24,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 07:58:24,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-18 07:58:24,948 INFO L87 Difference]: Start difference. First operand 13615 states and 19452 transitions. Second operand has 9 states, 8 states have (on average 19.625) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (35), 8 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-18 07:58:31,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:58:31,747 INFO L93 Difference]: Finished difference Result 32110 states and 47117 transitions. [2021-12-18 07:58:31,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 07:58:31,747 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 19.625) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (35), 8 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 3 states have call successors, (34) Word has length 298 [2021-12-18 07:58:31,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:58:31,909 INFO L225 Difference]: With dead ends: 32110 [2021-12-18 07:58:31,909 INFO L226 Difference]: Without dead ends: 18522 [2021-12-18 07:58:31,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-12-18 07:58:31,938 INFO L933 BasicCegarLoop]: 1377 mSDtfsCounter, 2688 mSDsluCounter, 2728 mSDsCounter, 0 mSdLazyCounter, 3618 mSolverCounterSat, 2078 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2769 SdHoareTripleChecker+Valid, 4105 SdHoareTripleChecker+Invalid, 5696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2078 IncrementalHoareTripleChecker+Valid, 3618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-18 07:58:31,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2769 Valid, 4105 Invalid, 5696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2078 Valid, 3618 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-12-18 07:58:31,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18522 states. [2021-12-18 07:58:32,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18522 to 13619. [2021-12-18 07:58:32,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13619 states, 9324 states have (on average 1.3132775632775633) internal successors, (12245), 9735 states have internal predecessors, (12245), 3317 states have call successors, (3317), 834 states have call predecessors, (3317), 977 states have return successors, (3894), 3289 states have call predecessors, (3894), 3316 states have call successors, (3894) [2021-12-18 07:58:32,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13619 states to 13619 states and 19456 transitions. [2021-12-18 07:58:32,703 INFO L78 Accepts]: Start accepts. Automaton has 13619 states and 19456 transitions. Word has length 298 [2021-12-18 07:58:32,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:58:32,703 INFO L470 AbstractCegarLoop]: Abstraction has 13619 states and 19456 transitions. [2021-12-18 07:58:32,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 19.625) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (35), 8 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-18 07:58:32,704 INFO L276 IsEmpty]: Start isEmpty. Operand 13619 states and 19456 transitions. [2021-12-18 07:58:32,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-12-18 07:58:32,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:58:32,727 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:58:32,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-18 07:58:32,728 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:58:32,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:58:32,728 INFO L85 PathProgramCache]: Analyzing trace with hash -42424430, now seen corresponding path program 1 times [2021-12-18 07:58:32,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:58:32,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911892425] [2021-12-18 07:58:32,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:58:32,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:58:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:58:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:58:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 07:58:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 07:58:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 07:58:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 07:58:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 07:58:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 07:58:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 07:58:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 07:58:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 07:58:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 07:58:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 07:58:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 07:58:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 07:58:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-18 07:58:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:32,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-18 07:58:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:33,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-18 07:58:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:33,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-18 07:58:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:33,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-18 07:58:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:33,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-18 07:58:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:33,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-18 07:58:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:33,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-18 07:58:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:33,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:33,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:33,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 07:58:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:33,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-18 07:58:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:33,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-18 07:58:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:33,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-18 07:58:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:33,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-12-18 07:58:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-12-18 07:58:33,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:58:33,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911892425] [2021-12-18 07:58:33,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911892425] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:58:33,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:58:33,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 07:58:33,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114773876] [2021-12-18 07:58:33,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:58:33,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 07:58:33,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:58:33,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 07:58:33,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-18 07:58:33,080 INFO L87 Difference]: Start difference. First operand 13619 states and 19456 transitions. Second operand has 10 states, 9 states have (on average 17.444444444444443) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (35), 8 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-18 07:58:40,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:58:40,033 INFO L93 Difference]: Finished difference Result 32138 states and 47153 transitions. [2021-12-18 07:58:40,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 07:58:40,034 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 17.444444444444443) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (35), 8 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 3 states have call successors, (34) Word has length 298 [2021-12-18 07:58:40,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:58:40,131 INFO L225 Difference]: With dead ends: 32138 [2021-12-18 07:58:40,131 INFO L226 Difference]: Without dead ends: 18546 [2021-12-18 07:58:40,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2021-12-18 07:58:40,183 INFO L933 BasicCegarLoop]: 1348 mSDtfsCounter, 2470 mSDsluCounter, 3486 mSDsCounter, 0 mSdLazyCounter, 4663 mSolverCounterSat, 1976 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2552 SdHoareTripleChecker+Valid, 4834 SdHoareTripleChecker+Invalid, 6639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1976 IncrementalHoareTripleChecker+Valid, 4663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-12-18 07:58:40,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2552 Valid, 4834 Invalid, 6639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1976 Valid, 4663 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-12-18 07:58:40,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18546 states. [2021-12-18 07:58:41,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18546 to 13627. [2021-12-18 07:58:41,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13627 states, 9332 states have (on average 1.313009001285898) internal successors, (12253), 9743 states have internal predecessors, (12253), 3317 states have call successors, (3317), 834 states have call predecessors, (3317), 977 states have return successors, (3894), 3289 states have call predecessors, (3894), 3316 states have call successors, (3894) [2021-12-18 07:58:41,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13627 states to 13627 states and 19464 transitions. [2021-12-18 07:58:41,094 INFO L78 Accepts]: Start accepts. Automaton has 13627 states and 19464 transitions. Word has length 298 [2021-12-18 07:58:41,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:58:41,094 INFO L470 AbstractCegarLoop]: Abstraction has 13627 states and 19464 transitions. [2021-12-18 07:58:41,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 17.444444444444443) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (35), 8 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-18 07:58:41,095 INFO L276 IsEmpty]: Start isEmpty. Operand 13627 states and 19464 transitions. [2021-12-18 07:58:41,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-12-18 07:58:41,116 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:58:41,116 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:58:41,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-18 07:58:41,117 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:58:41,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:58:41,117 INFO L85 PathProgramCache]: Analyzing trace with hash 606168340, now seen corresponding path program 1 times [2021-12-18 07:58:41,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:58:41,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611780623] [2021-12-18 07:58:41,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:58:41,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:58:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:58:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:58:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 07:58:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 07:58:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 07:58:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 07:58:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 07:58:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 07:58:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 07:58:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 07:58:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 07:58:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 07:58:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 07:58:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 07:58:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 07:58:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-18 07:58:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-18 07:58:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-18 07:58:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-18 07:58:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-18 07:58:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-18 07:58:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-18 07:58:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-18 07:58:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 07:58:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-18 07:58:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-18 07:58:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-18 07:58:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-12-18 07:58:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:41,446 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-12-18 07:58:41,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:58:41,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611780623] [2021-12-18 07:58:41,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611780623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:58:41,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:58:41,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 07:58:41,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19962259] [2021-12-18 07:58:41,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:58:41,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 07:58:41,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:58:41,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 07:58:41,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-18 07:58:41,449 INFO L87 Difference]: Start difference. First operand 13627 states and 19464 transitions. Second operand has 10 states, 9 states have (on average 17.444444444444443) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (35), 8 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-18 07:58:47,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:58:47,602 INFO L93 Difference]: Finished difference Result 32186 states and 47201 transitions. [2021-12-18 07:58:47,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 07:58:47,603 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 17.444444444444443) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (35), 8 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 3 states have call successors, (34) Word has length 298 [2021-12-18 07:58:47,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:58:47,693 INFO L225 Difference]: With dead ends: 32186 [2021-12-18 07:58:47,693 INFO L226 Difference]: Without dead ends: 18586 [2021-12-18 07:58:47,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2021-12-18 07:58:47,741 INFO L933 BasicCegarLoop]: 1383 mSDtfsCounter, 2375 mSDsluCounter, 3227 mSDsCounter, 0 mSdLazyCounter, 3911 mSolverCounterSat, 1698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2455 SdHoareTripleChecker+Valid, 4610 SdHoareTripleChecker+Invalid, 5609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1698 IncrementalHoareTripleChecker+Valid, 3911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-18 07:58:47,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2455 Valid, 4610 Invalid, 5609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1698 Valid, 3911 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-18 07:58:47,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18586 states. [2021-12-18 07:58:48,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18586 to 13635. [2021-12-18 07:58:48,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13635 states, 9340 states have (on average 1.3127408993576017) internal successors, (12261), 9751 states have internal predecessors, (12261), 3317 states have call successors, (3317), 834 states have call predecessors, (3317), 977 states have return successors, (3894), 3289 states have call predecessors, (3894), 3316 states have call successors, (3894) [2021-12-18 07:58:48,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13635 states to 13635 states and 19472 transitions. [2021-12-18 07:58:48,656 INFO L78 Accepts]: Start accepts. Automaton has 13635 states and 19472 transitions. Word has length 298 [2021-12-18 07:58:48,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:58:48,656 INFO L470 AbstractCegarLoop]: Abstraction has 13635 states and 19472 transitions. [2021-12-18 07:58:48,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 17.444444444444443) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (35), 8 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-18 07:58:48,656 INFO L276 IsEmpty]: Start isEmpty. Operand 13635 states and 19472 transitions. [2021-12-18 07:58:48,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-12-18 07:58:48,679 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:58:48,679 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:58:48,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-18 07:58:48,679 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:58:48,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:58:48,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1133562390, now seen corresponding path program 1 times [2021-12-18 07:58:48,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:58:48,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877720985] [2021-12-18 07:58:48,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:58:48,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:58:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:58:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:58:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 07:58:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 07:58:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 07:58:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 07:58:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 07:58:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 07:58:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 07:58:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 07:58:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 07:58:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 07:58:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 07:58:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 07:58:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 07:58:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-18 07:58:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-18 07:58:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-18 07:58:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:48,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-18 07:58:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:49,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-18 07:58:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:49,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-18 07:58:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:49,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-18 07:58:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:49,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-18 07:58:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:49,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:58:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:49,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:58:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:49,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 07:58:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:49,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-18 07:58:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:49,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-18 07:58:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:49,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-18 07:58:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:49,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-12-18 07:58:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:58:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-12-18 07:58:49,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:58:49,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877720985] [2021-12-18 07:58:49,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877720985] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:58:49,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:58:49,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 07:58:49,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016258722] [2021-12-18 07:58:49,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:58:49,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 07:58:49,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:58:49,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 07:58:49,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-18 07:58:49,069 INFO L87 Difference]: Start difference. First operand 13635 states and 19472 transitions. Second operand has 10 states, 9 states have (on average 17.444444444444443) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (35), 8 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-18 07:58:59,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:58:59,112 INFO L93 Difference]: Finished difference Result 34770 states and 51741 transitions. [2021-12-18 07:58:59,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 07:58:59,113 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 17.444444444444443) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (35), 8 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 3 states have call successors, (34) Word has length 298 [2021-12-18 07:58:59,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:58:59,199 INFO L225 Difference]: With dead ends: 34770 [2021-12-18 07:58:59,200 INFO L226 Difference]: Without dead ends: 21162 [2021-12-18 07:58:59,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-12-18 07:58:59,249 INFO L933 BasicCegarLoop]: 1852 mSDtfsCounter, 2268 mSDsluCounter, 6247 mSDsCounter, 0 mSdLazyCounter, 6803 mSolverCounterSat, 1216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2430 SdHoareTripleChecker+Valid, 8099 SdHoareTripleChecker+Invalid, 8019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 6803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-12-18 07:58:59,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2430 Valid, 8099 Invalid, 8019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1216 Valid, 6803 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2021-12-18 07:58:59,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21162 states. [2021-12-18 07:59:00,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21162 to 13643. [2021-12-18 07:59:00,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13643 states, 9348 states have (on average 1.3124732563115105) internal successors, (12269), 9759 states have internal predecessors, (12269), 3317 states have call successors, (3317), 834 states have call predecessors, (3317), 977 states have return successors, (3894), 3289 states have call predecessors, (3894), 3316 states have call successors, (3894) [2021-12-18 07:59:00,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13643 states to 13643 states and 19480 transitions. [2021-12-18 07:59:00,196 INFO L78 Accepts]: Start accepts. Automaton has 13643 states and 19480 transitions. Word has length 298 [2021-12-18 07:59:00,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:59:00,196 INFO L470 AbstractCegarLoop]: Abstraction has 13643 states and 19480 transitions. [2021-12-18 07:59:00,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 17.444444444444443) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (35), 8 states have call predecessors, (35), 1 states have return successors, (34), 2 states have call predecessors, (34), 3 states have call successors, (34) [2021-12-18 07:59:00,197 INFO L276 IsEmpty]: Start isEmpty. Operand 13643 states and 19480 transitions. [2021-12-18 07:59:00,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-12-18 07:59:00,217 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:59:00,218 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:59:00,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-18 07:59:00,218 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:59:00,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:59:00,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1497102887, now seen corresponding path program 1 times [2021-12-18 07:59:00,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:59:00,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963031818] [2021-12-18 07:59:00,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:59:00,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:59:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:59:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:59:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:59:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:59:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:59:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:59:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 07:59:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:59:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:59:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 07:59:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 07:59:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:59:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:59:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 07:59:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 07:59:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 07:59:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 07:59:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 07:59:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 07:59:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 07:59:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-18 07:59:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 07:59:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:59:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-18 07:59:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-18 07:59:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-18 07:59:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:59:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-18 07:59:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-18 07:59:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-18 07:59:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-18 07:59:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-18 07:59:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-18 07:59:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-18 07:59:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:59:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:59:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 07:59:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-18 07:59:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-18 07:59:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-12-18 07:59:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-18 07:59:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:00,581 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-18 07:59:00,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:59:00,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963031818] [2021-12-18 07:59:00,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963031818] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:59:00,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:59:00,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 07:59:00,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505736145] [2021-12-18 07:59:00,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:59:00,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 07:59:00,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:59:00,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 07:59:00,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-18 07:59:00,584 INFO L87 Difference]: Start difference. First operand 13643 states and 19480 transitions. Second operand has 11 states, 10 states have (on average 15.9) internal successors, (159), 4 states have internal predecessors, (159), 3 states have call successors, (36), 8 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-12-18 07:59:07,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:59:07,946 INFO L93 Difference]: Finished difference Result 33570 states and 49597 transitions. [2021-12-18 07:59:07,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 07:59:07,946 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 15.9) internal successors, (159), 4 states have internal predecessors, (159), 3 states have call successors, (36), 8 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 303 [2021-12-18 07:59:07,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:59:08,037 INFO L225 Difference]: With dead ends: 33570 [2021-12-18 07:59:08,037 INFO L226 Difference]: Without dead ends: 19954 [2021-12-18 07:59:08,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-12-18 07:59:08,083 INFO L933 BasicCegarLoop]: 1814 mSDtfsCounter, 3089 mSDsluCounter, 5843 mSDsCounter, 0 mSdLazyCounter, 5115 mSolverCounterSat, 2146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3250 SdHoareTripleChecker+Valid, 7657 SdHoareTripleChecker+Invalid, 7261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2146 IncrementalHoareTripleChecker+Valid, 5115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-12-18 07:59:08,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3250 Valid, 7657 Invalid, 7261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2146 Valid, 5115 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-12-18 07:59:08,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19954 states. [2021-12-18 07:59:08,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19954 to 13651. [2021-12-18 07:59:08,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13651 states, 9356 states have (on average 1.3122060709705001) internal successors, (12277), 9763 states have internal predecessors, (12277), 3317 states have call successors, (3317), 834 states have call predecessors, (3317), 977 states have return successors, (3894), 3293 states have call predecessors, (3894), 3316 states have call successors, (3894) [2021-12-18 07:59:08,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13651 states to 13651 states and 19488 transitions. [2021-12-18 07:59:08,974 INFO L78 Accepts]: Start accepts. Automaton has 13651 states and 19488 transitions. Word has length 303 [2021-12-18 07:59:08,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:59:08,975 INFO L470 AbstractCegarLoop]: Abstraction has 13651 states and 19488 transitions. [2021-12-18 07:59:08,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 15.9) internal successors, (159), 4 states have internal predecessors, (159), 3 states have call successors, (36), 8 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-12-18 07:59:08,975 INFO L276 IsEmpty]: Start isEmpty. Operand 13651 states and 19488 transitions. [2021-12-18 07:59:08,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-12-18 07:59:08,997 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:59:08,997 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:59:08,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-18 07:59:08,998 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:59:08,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:59:08,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1852676149, now seen corresponding path program 1 times [2021-12-18 07:59:08,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:59:08,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535792574] [2021-12-18 07:59:08,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:59:08,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:59:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:59:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:59:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:59:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:59:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:59:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:59:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 07:59:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:59:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:59:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 07:59:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 07:59:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:59:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:59:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 07:59:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 07:59:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 07:59:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 07:59:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 07:59:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 07:59:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-18 07:59:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-18 07:59:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 07:59:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:59:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-18 07:59:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-18 07:59:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-18 07:59:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:59:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-18 07:59:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-18 07:59:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-18 07:59:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-18 07:59:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-18 07:59:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-12-18 07:59:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-12-18 07:59:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:59:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:59:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 07:59:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2021-12-18 07:59:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-18 07:59:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-12-18 07:59:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-12-18 07:59:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:09,495 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-18 07:59:09,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:59:09,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535792574] [2021-12-18 07:59:09,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535792574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:59:09,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:59:09,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 07:59:09,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916190568] [2021-12-18 07:59:09,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:59:09,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 07:59:09,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:59:09,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 07:59:09,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-18 07:59:09,497 INFO L87 Difference]: Start difference. First operand 13651 states and 19488 transitions. Second operand has 11 states, 10 states have (on average 15.7) internal successors, (157), 5 states have internal predecessors, (157), 4 states have call successors, (36), 8 states have call predecessors, (36), 1 states have return successors, (35), 3 states have call predecessors, (35), 4 states have call successors, (35) [2021-12-18 07:59:25,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:59:25,087 INFO L93 Difference]: Finished difference Result 50790 states and 74942 transitions. [2021-12-18 07:59:25,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 07:59:25,088 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 15.7) internal successors, (157), 5 states have internal predecessors, (157), 4 states have call successors, (36), 8 states have call predecessors, (36), 1 states have return successors, (35), 3 states have call predecessors, (35), 4 states have call successors, (35) Word has length 310 [2021-12-18 07:59:25,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:59:25,349 INFO L225 Difference]: With dead ends: 50790 [2021-12-18 07:59:25,349 INFO L226 Difference]: Without dead ends: 37166 [2021-12-18 07:59:25,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2021-12-18 07:59:25,386 INFO L933 BasicCegarLoop]: 2229 mSDtfsCounter, 4483 mSDsluCounter, 6185 mSDsCounter, 0 mSdLazyCounter, 9295 mSolverCounterSat, 3263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4656 SdHoareTripleChecker+Valid, 8414 SdHoareTripleChecker+Invalid, 12558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3263 IncrementalHoareTripleChecker+Valid, 9295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-12-18 07:59:25,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4656 Valid, 8414 Invalid, 12558 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3263 Valid, 9295 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2021-12-18 07:59:25,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37166 states. [2021-12-18 07:59:27,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37166 to 27243. [2021-12-18 07:59:27,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27243 states, 18654 states have (on average 1.3131231907365712) internal successors, (24495), 19489 states have internal predecessors, (24495), 6639 states have call successors, (6639), 1662 states have call predecessors, (6639), 1949 states have return successors, (7794), 6571 states have call predecessors, (7794), 6638 states have call successors, (7794) [2021-12-18 07:59:27,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27243 states to 27243 states and 38928 transitions. [2021-12-18 07:59:27,245 INFO L78 Accepts]: Start accepts. Automaton has 27243 states and 38928 transitions. Word has length 310 [2021-12-18 07:59:27,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:59:27,245 INFO L470 AbstractCegarLoop]: Abstraction has 27243 states and 38928 transitions. [2021-12-18 07:59:27,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 15.7) internal successors, (157), 5 states have internal predecessors, (157), 4 states have call successors, (36), 8 states have call predecessors, (36), 1 states have return successors, (35), 3 states have call predecessors, (35), 4 states have call successors, (35) [2021-12-18 07:59:27,245 INFO L276 IsEmpty]: Start isEmpty. Operand 27243 states and 38928 transitions. [2021-12-18 07:59:27,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-12-18 07:59:27,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:59:27,280 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:59:27,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-18 07:59:27,280 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:59:27,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:59:27,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1229394547, now seen corresponding path program 1 times [2021-12-18 07:59:27,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:59:27,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572750355] [2021-12-18 07:59:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:59:27,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:59:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:59:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:59:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:59:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:59:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:59:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:59:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 07:59:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:59:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:59:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 07:59:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 07:59:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:59:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:59:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 07:59:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 07:59:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 07:59:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 07:59:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 07:59:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 07:59:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-18 07:59:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-18 07:59:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 07:59:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:59:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-18 07:59:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-18 07:59:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-18 07:59:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:59:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-18 07:59:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-18 07:59:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-18 07:59:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-18 07:59:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-18 07:59:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-12-18 07:59:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-12-18 07:59:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:59:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:59:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 07:59:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2021-12-18 07:59:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-18 07:59:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-12-18 07:59:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-12-18 07:59:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:59:27,763 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-12-18 07:59:27,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:59:27,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572750355] [2021-12-18 07:59:27,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572750355] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:59:27,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:59:27,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-18 07:59:27,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125623564] [2021-12-18 07:59:27,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:59:27,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-18 07:59:27,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:59:27,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-18 07:59:27,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-18 07:59:27,767 INFO L87 Difference]: Start difference. First operand 27243 states and 38928 transitions. Second operand has 14 states, 13 states have (on average 11.846153846153847) internal successors, (154), 7 states have internal predecessors, (154), 3 states have call successors, (36), 8 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-12-18 07:59:39,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:59:39,313 INFO L93 Difference]: Finished difference Result 51050 states and 76100 transitions. [2021-12-18 07:59:39,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 07:59:39,314 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 11.846153846153847) internal successors, (154), 7 states have internal predecessors, (154), 3 states have call successors, (36), 8 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 310 [2021-12-18 07:59:39,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:59:39,318 INFO L225 Difference]: With dead ends: 51050 [2021-12-18 07:59:39,318 INFO L226 Difference]: Without dead ends: 0 [2021-12-18 07:59:39,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-12-18 07:59:39,428 INFO L933 BasicCegarLoop]: 1850 mSDtfsCounter, 2723 mSDsluCounter, 9786 mSDsCounter, 0 mSdLazyCounter, 8670 mSolverCounterSat, 1469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2805 SdHoareTripleChecker+Valid, 11636 SdHoareTripleChecker+Invalid, 10139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1469 IncrementalHoareTripleChecker+Valid, 8670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-12-18 07:59:39,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2805 Valid, 11636 Invalid, 10139 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1469 Valid, 8670 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2021-12-18 07:59:39,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-18 07:59:39,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-18 07:59:39,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 07:59:39,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-18 07:59:39,438 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 310 [2021-12-18 07:59:39,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:59:39,439 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-18 07:59:39,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 11.846153846153847) internal successors, (154), 7 states have internal predecessors, (154), 3 states have call successors, (36), 8 states have call predecessors, (36), 2 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-12-18 07:59:39,439 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-18 07:59:39,440 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-18 07:59:39,442 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-18 07:59:39,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-18 07:59:39,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Killed by 15