./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.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 d62cca735e5e5c3ed49d61d09e2b8d7696fac03708570c9e23afbb5bfdcaa275 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 12:15:21,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 12:15:21,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 12:15:21,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 12:15:21,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 12:15:21,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 12:15:21,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 12:15:21,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 12:15:21,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 12:15:21,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 12:15:21,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 12:15:21,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 12:15:21,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 12:15:21,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 12:15:21,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 12:15:21,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 12:15:21,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 12:15:21,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 12:15:21,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 12:15:21,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 12:15:21,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 12:15:21,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 12:15:21,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 12:15:21,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 12:15:21,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 12:15:21,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 12:15:21,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 12:15:21,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 12:15:21,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 12:15:21,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 12:15:21,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 12:15:21,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 12:15:21,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 12:15:21,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 12:15:21,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 12:15:21,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 12:15:21,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 12:15:21,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 12:15:21,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 12:15:21,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 12:15:21,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 12:15:21,536 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 12:15:21,559 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 12:15:21,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 12:15:21,560 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 12:15:21,560 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 12:15:21,561 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 12:15:21,561 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 12:15:21,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 12:15:21,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 12:15:21,561 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 12:15:21,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 12:15:21,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 12:15:21,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 12:15:21,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 12:15:21,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 12:15:21,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 12:15:21,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 12:15:21,563 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 12:15:21,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 12:15:21,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 12:15:21,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 12:15:21,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 12:15:21,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 12:15:21,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 12:15:21,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 12:15:21,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 12:15:21,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 12:15:21,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 12:15:21,565 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 12:15:21,566 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 12:15:21,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 12:15:21,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 12:15:21,566 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d62cca735e5e5c3ed49d61d09e2b8d7696fac03708570c9e23afbb5bfdcaa275 [2021-11-17 12:15:21,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 12:15:21,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 12:15:21,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 12:15:21,781 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 12:15:21,782 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 12:15:21,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-11-17 12:15:21,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/238c40187/a368e4baf2914d0795c43ccb2874448e/FLAG4e5c34810 [2021-11-17 12:15:22,505 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 12:15:22,505 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-11-17 12:15:22,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/238c40187/a368e4baf2914d0795c43ccb2874448e/FLAG4e5c34810 [2021-11-17 12:15:22,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/238c40187/a368e4baf2914d0795c43ccb2874448e [2021-11-17 12:15:22,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 12:15:22,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 12:15:22,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 12:15:22,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 12:15:22,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 12:15:22,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:15:22" (1/1) ... [2021-11-17 12:15:22,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3684165c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:15:22, skipping insertion in model container [2021-11-17 12:15:22,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:15:22" (1/1) ... [2021-11-17 12:15:22,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 12:15:22,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 12:15:24,404 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-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[361017,361030] [2021-11-17 12:15:24,483 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 12:15:24,549 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 12:15:24,821 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-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[361017,361030] [2021-11-17 12:15:24,826 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 12:15:24,983 INFO L208 MainTranslator]: Completed translation [2021-11-17 12:15:24,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:15:24 WrapperNode [2021-11-17 12:15:24,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 12:15:24,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 12:15:24,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 12:15:24,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 12:15:24,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:15:24" (1/1) ... [2021-11-17 12:15:25,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:15:24" (1/1) ... [2021-11-17 12:15:25,371 INFO L137 Inliner]: procedures = 359, calls = 7215, calls flagged for inlining = 183, calls inlined = 137, statements flattened = 11727 [2021-11-17 12:15:25,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 12:15:25,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 12:15:25,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 12:15:25,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 12:15:25,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:15:24" (1/1) ... [2021-11-17 12:15:25,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:15:24" (1/1) ... [2021-11-17 12:15:25,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:15:24" (1/1) ... [2021-11-17 12:15:25,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:15:24" (1/1) ... [2021-11-17 12:15:25,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:15:24" (1/1) ... [2021-11-17 12:15:25,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:15:24" (1/1) ... [2021-11-17 12:15:25,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:15:24" (1/1) ... [2021-11-17 12:15:25,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 12:15:25,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 12:15:25,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 12:15:25,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 12:15:25,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:15:24" (1/1) ... [2021-11-17 12:15:25,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 12:15:25,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 12:15:25,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-17 12:15:25,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-17 12:15:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-11-17 12:15:25,967 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-11-17 12:15:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-11-17 12:15:25,967 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-11-17 12:15:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-17 12:15:25,967 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-17 12:15:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-17 12:15:25,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-17 12:15:25,983 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-17 12:15:25,983 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-17 12:15:25,983 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_recv_bulk_msg [2021-11-17 12:15:25,983 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_recv_bulk_msg [2021-11-17 12:15:25,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 12:15:25,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 12:15:25,983 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_save_screen [2021-11-17 12:15:25,983 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_save_screen [2021-11-17 12:15:25,984 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_free_buffers [2021-11-17 12:15:25,984 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_free_buffers [2021-11-17 12:15:25,984 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_disconnect [2021-11-17 12:15:25,984 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_disconnect [2021-11-17 12:15:25,984 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_deinit [2021-11-17 12:15:25,984 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_deinit [2021-11-17 12:15:25,984 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_memio_byte [2021-11-17 12:15:25,984 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_memio_byte [2021-11-17 12:15:25,984 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-17 12:15:25,984 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-17 12:15:25,984 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-11-17 12:15:25,984 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-11-17 12:15:25,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-17 12:15:25,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-17 12:15:25,985 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_set_cursor [2021-11-17 12:15:25,985 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_set_cursor [2021-11-17 12:15:25,985 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2021-11-17 12:15:25,985 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2021-11-17 12:15:25,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-11-17 12:15:25,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-11-17 12:15:25,985 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_memio_word [2021-11-17 12:15:25,985 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_memio_word [2021-11-17 12:15:25,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-17 12:15:25,986 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-17 12:15:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetReg [2021-11-17 12:15:25,986 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetReg [2021-11-17 12:15:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-17 12:15:25,986 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-17 12:15:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_get_sisusb_lock_and_check [2021-11-17 12:15:25,986 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_get_sisusb_lock_and_check [2021-11-17 12:15:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 12:15:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure take_over_console [2021-11-17 12:15:25,987 INFO L138 BoogieDeclarations]: Found implementation of procedure take_over_console [2021-11-17 12:15:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_sisusb_valid [2021-11-17 12:15:25,987 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_sisusb_valid [2021-11-17 12:15:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 12:15:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegOR [2021-11-17 12:15:25,987 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegOR [2021-11-17 12:15:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_sisusb_usb_data [2021-11-17 12:15:25,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_sisusb_usb_data [2021-11-17 12:15:25,988 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-17 12:15:25,988 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_check_rbc [2021-11-17 12:15:25,988 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_check_rbc [2021-11-17 12:15:25,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 12:15:25,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 12:15:25,988 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-17 12:15:25,989 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-17 12:15:25,989 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_outurb_available [2021-11-17 12:15:25,989 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_outurb_available [2021-11-17 12:15:25,989 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_kill_all_busy [2021-11-17 12:15:25,990 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_kill_all_busy [2021-11-17 12:15:25,990 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-17 12:15:25,990 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-17 12:15:25,990 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-17 12:15:25,990 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-17 12:15:25,990 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_getidxreg [2021-11-17 12:15:25,990 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_getidxreg [2021-11-17 12:15:25,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-17 12:15:25,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-17 12:15:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-11-17 12:15:25,991 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-11-17 12:15:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_writeb [2021-11-17 12:15:25,991 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_writeb [2021-11-17 12:15:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-17 12:15:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-17 12:15:25,991 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-17 12:15:25,992 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_set_default_mode [2021-11-17 12:15:25,992 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_set_default_mode [2021-11-17 12:15:25,992 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_memio_byte [2021-11-17 12:15:25,992 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_memio_byte [2021-11-17 12:15:25,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-17 12:15:25,992 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_DisplayOn [2021-11-17 12:15:25,992 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_DisplayOn [2021-11-17 12:15:25,992 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxregandor [2021-11-17 12:15:25,992 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxregandor [2021-11-17 12:15:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_mem_bulk [2021-11-17 12:15:25,993 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_mem_bulk [2021-11-17 12:15:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-11-17 12:15:25,993 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-11-17 12:15:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbdummycon_init [2021-11-17 12:15:25,993 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbdummycon_init [2021-11-17 12:15:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2021-11-17 12:15:25,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2021-11-17 12:15:25,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 12:15:25,994 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_GetReg [2021-11-17 12:15:25,994 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_GetReg [2021-11-17 12:15:25,994 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_do_font_op [2021-11-17 12:15:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_do_font_op [2021-11-17 12:15:26,007 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_init_gfxdevice [2021-11-17 12:15:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_init_gfxdevice [2021-11-17 12:15:26,007 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegByte [2021-11-17 12:15:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegByte [2021-11-17 12:15:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_free_urbs [2021-11-17 12:15:26,008 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_free_urbs [2021-11-17 12:15:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-17 12:15:26,008 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-17 12:15:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_send_bridge_packet [2021-11-17 12:15:26,008 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_send_bridge_packet [2021-11-17 12:15:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-17 12:15:26,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-17 12:15:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-17 12:15:26,008 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-17 12:15:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_ioctl [2021-11-17 12:15:26,009 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_ioctl [2021-11-17 12:15:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_memio_word [2021-11-17 12:15:26,009 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_memio_word [2021-11-17 12:15:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_get_sisusb [2021-11-17 12:15:26,009 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_get_sisusb [2021-11-17 12:15:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-17 12:15:26,009 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-17 12:15:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_cursor [2021-11-17 12:15:26,009 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_cursor [2021-11-17 12:15:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_is_inactive [2021-11-17 12:15:26,009 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_is_inactive [2021-11-17 12:15:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-17 12:15:26,009 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-17 12:15:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_clear_vram [2021-11-17 12:15:26,009 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_clear_vram [2021-11-17 12:15:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_pci_config [2021-11-17 12:15:26,010 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_pci_config [2021-11-17 12:15:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 12:15:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-17 12:15:26,010 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-17 12:15:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_send_bulk_msg [2021-11-17 12:15:26,010 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_send_bulk_msg [2021-11-17 12:15:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-17 12:15:26,010 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-17 12:15:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 12:15:26,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 12:15:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_readb [2021-11-17 12:15:26,010 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_readb [2021-11-17 12:15:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxregor [2021-11-17 12:15:26,010 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxregor [2021-11-17 12:15:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 12:15:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2021-11-17 12:15:26,011 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2021-11-17 12:15:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-17 12:15:26,011 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-17 12:15:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 12:15:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_send_packet [2021-11-17 12:15:26,011 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_send_packet [2021-11-17 12:15:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_memio_long [2021-11-17 12:15:26,011 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_memio_long [2021-11-17 12:15:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_reset_text_mode [2021-11-17 12:15:26,011 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_reset_text_mode [2021-11-17 12:15:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure SiSUSB_InitPtr [2021-11-17 12:15:26,011 INFO L138 BoogieDeclarations]: Found implementation of procedure SiSUSB_InitPtr [2021-11-17 12:15:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 12:15:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_pci_config [2021-11-17 12:15:26,011 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_pci_config [2021-11-17 12:15:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-17 12:15:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxreg [2021-11-17 12:15:26,012 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxreg [2021-11-17 12:15:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegANDOR [2021-11-17 12:15:26,012 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegANDOR [2021-11-17 12:15:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 12:15:26,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 12:15:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_wait_all_out_complete [2021-11-17 12:15:26,012 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_wait_all_out_complete [2021-11-17 12:15:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-17 12:15:26,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-17 12:15:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegAND [2021-11-17 12:15:26,012 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegAND [2021-11-17 12:15:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxregand [2021-11-17 12:15:26,012 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxregand [2021-11-17 12:15:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-17 12:15:26,012 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-17 12:15:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetSegmentReg [2021-11-17 12:15:26,012 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetSegmentReg [2021-11-17 12:15:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_copy_memory [2021-11-17 12:15:26,013 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_copy_memory [2021-11-17 12:15:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setreg [2021-11-17 12:15:26,013 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setreg [2021-11-17 12:15:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_sisusb_usb_data [2021-11-17 12:15:26,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_sisusb_usb_data [2021-11-17 12:15:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_set_start_address [2021-11-17 12:15:26,013 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_set_start_address [2021-11-17 12:15:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-17 12:15:26,013 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-17 12:15:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-17 12:15:26,013 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-17 12:15:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_WriteDAC [2021-11-17 12:15:26,013 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_WriteDAC [2021-11-17 12:15:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_mem_bulk [2021-11-17 12:15:26,013 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_mem_bulk [2021-11-17 12:15:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_getreg [2021-11-17 12:15:26,013 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_getreg [2021-11-17 12:15:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure SiSUSBSetMode [2021-11-17 12:15:26,014 INFO L138 BoogieDeclarations]: Found implementation of procedure SiSUSBSetMode [2021-11-17 12:15:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure vc_resize [2021-11-17 12:15:26,014 INFO L138 BoogieDeclarations]: Found implementation of procedure vc_resize [2021-11-17 12:15:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_init [2021-11-17 12:15:26,014 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_init [2021-11-17 12:15:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-11-17 12:15:26,014 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-11-17 12:15:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 12:15:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_memio_long [2021-11-17 12:15:26,014 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_memio_long [2021-11-17 12:15:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_GetRegByte [2021-11-17 12:15:26,014 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_GetRegByte [2021-11-17 12:15:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-17 12:15:26,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-17 12:15:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_triggersr16 [2021-11-17 12:15:26,014 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_triggersr16 [2021-11-17 12:15:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-17 12:15:26,015 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-17 12:15:26,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 12:15:26,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 12:15:26,015 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_all_free [2021-11-17 12:15:26,015 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_all_free [2021-11-17 12:15:26,750 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 12:15:26,753 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 12:15:54,208 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 12:15:54,223 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 12:15:54,223 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-17 12:15:54,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:15:54 BoogieIcfgContainer [2021-11-17 12:15:54,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 12:15:54,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 12:15:54,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 12:15:54,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 12:15:54,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:15:22" (1/3) ... [2021-11-17 12:15:54,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6091680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:15:54, skipping insertion in model container [2021-11-17 12:15:54,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:15:24" (2/3) ... [2021-11-17 12:15:54,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6091680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:15:54, skipping insertion in model container [2021-11-17 12:15:54,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:15:54" (3/3) ... [2021-11-17 12:15:54,231 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-11-17 12:15:54,234 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 12:15:54,235 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 12:15:54,268 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 12:15:54,272 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-17 12:15:54,272 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 12:15:54,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 2753 states, 1882 states have (on average 1.3575982996811902) internal successors, (2555), 1909 states have internal predecessors, (2555), 765 states have call successors, (765), 104 states have call predecessors, (765), 104 states have return successors, (765), 761 states have call predecessors, (765), 765 states have call successors, (765) [2021-11-17 12:15:54,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-17 12:15:54,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 12:15:54,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 12:15:54,322 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 12:15:54,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 12:15:54,341 INFO L85 PathProgramCache]: Analyzing trace with hash -674524315, now seen corresponding path program 1 times [2021-11-17 12:15:54,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 12:15:54,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443505620] [2021-11-17 12:15:54,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:15:54,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 12:15:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:15:55,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 12:15:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:15:55,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 12:15:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:15:55,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-17 12:15:55,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 12:15:55,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443505620] [2021-11-17 12:15:55,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443505620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 12:15:55,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 12:15:55,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 12:15:55,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039166882] [2021-11-17 12:15:55,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 12:15:55,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 12:15:55,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 12:15:55,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 12:15:55,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 12:15:55,051 INFO L87 Difference]: Start difference. First operand has 2753 states, 1882 states have (on average 1.3575982996811902) internal successors, (2555), 1909 states have internal predecessors, (2555), 765 states have call successors, (765), 104 states have call predecessors, (765), 104 states have return successors, (765), 761 states have call predecessors, (765), 765 states have call successors, (765) Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-17 12:16:02,806 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:16:05,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:16:10,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:16:18,977 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:16:19,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 12:16:19,810 INFO L93 Difference]: Finished difference Result 5637 states and 8475 transitions. [2021-11-17 12:16:19,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 12:16:19,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-11-17 12:16:19,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 12:16:19,848 INFO L225 Difference]: With dead ends: 5637 [2021-11-17 12:16:19,848 INFO L226 Difference]: Without dead ends: 2888 [2021-11-17 12:16:19,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 12:16:19,869 INFO L933 BasicCegarLoop]: 3528 mSDtfsCounter, 1936 mSDsluCounter, 2074 mSDsCounter, 0 mSdLazyCounter, 3605 mSolverCounterSat, 806 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2500 SdHoareTripleChecker+Valid, 5602 SdHoareTripleChecker+Invalid, 4415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 3605 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time [2021-11-17 12:16:19,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2500 Valid, 5602 Invalid, 4415 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [806 Valid, 3605 Invalid, 4 Unknown, 0 Unchecked, 24.1s Time] [2021-11-17 12:16:19,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2021-11-17 12:16:20,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2746. [2021-11-17 12:16:20,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2746 states, 1878 states have (on average 1.356762513312034) internal successors, (2548), 1903 states have internal predecessors, (2548), 765 states have call successors, (765), 104 states have call predecessors, (765), 102 states have return successors, (759), 755 states have call predecessors, (759), 759 states have call successors, (759) [2021-11-17 12:16:20,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2746 states to 2746 states and 4072 transitions. [2021-11-17 12:16:20,073 INFO L78 Accepts]: Start accepts. Automaton has 2746 states and 4072 transitions. Word has length 19 [2021-11-17 12:16:20,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 12:16:20,074 INFO L470 AbstractCegarLoop]: Abstraction has 2746 states and 4072 transitions. [2021-11-17 12:16:20,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-17 12:16:20,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2746 states and 4072 transitions. [2021-11-17 12:16:20,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-17 12:16:20,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 12:16:20,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 12:16:20,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 12:16:20,076 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 12:16:20,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 12:16:20,077 INFO L85 PathProgramCache]: Analyzing trace with hash -34172631, now seen corresponding path program 1 times [2021-11-17 12:16:20,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 12:16:20,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356972868] [2021-11-17 12:16:20,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:16:20,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 12:16:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:20,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 12:16:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:20,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 12:16:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:20,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-17 12:16:20,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 12:16:20,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356972868] [2021-11-17 12:16:20,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356972868] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 12:16:20,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698485875] [2021-11-17 12:16:20,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:16:20,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 12:16:20,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 12:16:20,442 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 12:16:20,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-17 12:16:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:21,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 8357 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 12:16:21,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 12:16:21,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-17 12:16:21,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 12:16:21,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698485875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 12:16:21,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 12:16:21,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-17 12:16:21,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478928551] [2021-11-17 12:16:21,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 12:16:21,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 12:16:21,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 12:16:21,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 12:16:21,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-17 12:16:21,977 INFO L87 Difference]: Start difference. First operand 2746 states and 4072 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-17 12:16:23,025 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:16:23,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 12:16:23,148 INFO L93 Difference]: Finished difference Result 2748 states and 4073 transitions. [2021-11-17 12:16:23,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 12:16:23,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2021-11-17 12:16:23,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 12:16:23,163 INFO L225 Difference]: With dead ends: 2748 [2021-11-17 12:16:23,163 INFO L226 Difference]: Without dead ends: 2745 [2021-11-17 12:16:23,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-17 12:16:23,169 INFO L933 BasicCegarLoop]: 4068 mSDtfsCounter, 4051 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4051 SdHoareTripleChecker+Valid, 4070 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-17 12:16:23,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4051 Valid, 4070 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-17 12:16:23,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2021-11-17 12:16:23,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2745. [2021-11-17 12:16:23,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2745 states, 1878 states have (on average 1.3562300319488818) internal successors, (2547), 1902 states have internal predecessors, (2547), 764 states have call successors, (764), 104 states have call predecessors, (764), 102 states have return successors, (759), 755 states have call predecessors, (759), 759 states have call successors, (759) [2021-11-17 12:16:23,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 4070 transitions. [2021-11-17 12:16:23,270 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 4070 transitions. Word has length 21 [2021-11-17 12:16:23,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 12:16:23,270 INFO L470 AbstractCegarLoop]: Abstraction has 2745 states and 4070 transitions. [2021-11-17 12:16:23,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-17 12:16:23,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 4070 transitions. [2021-11-17 12:16:23,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-17 12:16:23,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 12:16:23,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 12:16:23,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-17 12:16:23,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 12:16:23,473 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 12:16:23,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 12:16:23,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1061720298, now seen corresponding path program 1 times [2021-11-17 12:16:23,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 12:16:23,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957233193] [2021-11-17 12:16:23,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:16:23,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 12:16:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:23,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 12:16:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:23,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 12:16:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:23,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-17 12:16:23,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 12:16:23,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957233193] [2021-11-17 12:16:23,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957233193] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 12:16:23,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112368011] [2021-11-17 12:16:23,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:16:23,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 12:16:23,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 12:16:23,964 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 12:16:24,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-17 12:16:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:25,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 8359 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 12:16:25,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 12:16:25,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-17 12:16:25,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 12:16:25,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112368011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 12:16:25,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 12:16:25,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-17 12:16:25,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926209560] [2021-11-17 12:16:25,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 12:16:25,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 12:16:25,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 12:16:25,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 12:16:25,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-17 12:16:25,519 INFO L87 Difference]: Start difference. First operand 2745 states and 4070 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-17 12:16:26,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 12:16:26,613 INFO L93 Difference]: Finished difference Result 7212 states and 10689 transitions. [2021-11-17 12:16:26,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 12:16:26,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2021-11-17 12:16:26,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 12:16:26,639 INFO L225 Difference]: With dead ends: 7212 [2021-11-17 12:16:26,639 INFO L226 Difference]: Without dead ends: 4482 [2021-11-17 12:16:26,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-17 12:16:26,661 INFO L933 BasicCegarLoop]: 6168 mSDtfsCounter, 2758 mSDsluCounter, 3815 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2758 SdHoareTripleChecker+Valid, 9983 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-17 12:16:26,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2758 Valid, 9983 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-17 12:16:26,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4482 states. [2021-11-17 12:16:26,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4482 to 4479. [2021-11-17 12:16:26,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4479 states, 3043 states have (on average 1.341439369043707) internal successors, (4082), 3094 states have internal predecessors, (4082), 1254 states have call successors, (1254), 180 states have call predecessors, (1254), 181 states have return successors, (1261), 1230 states have call predecessors, (1261), 1236 states have call successors, (1261) [2021-11-17 12:16:26,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4479 states to 4479 states and 6597 transitions. [2021-11-17 12:16:26,866 INFO L78 Accepts]: Start accepts. Automaton has 4479 states and 6597 transitions. Word has length 22 [2021-11-17 12:16:26,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 12:16:26,869 INFO L470 AbstractCegarLoop]: Abstraction has 4479 states and 6597 transitions. [2021-11-17 12:16:26,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-17 12:16:26,869 INFO L276 IsEmpty]: Start isEmpty. Operand 4479 states and 6597 transitions. [2021-11-17 12:16:26,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-17 12:16:26,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 12:16:26,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 12:16:26,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-17 12:16:27,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-17 12:16:27,095 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 12:16:27,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 12:16:27,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1444045260, now seen corresponding path program 1 times [2021-11-17 12:16:27,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 12:16:27,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130598873] [2021-11-17 12:16:27,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:16:27,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 12:16:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:27,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 12:16:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:27,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 12:16:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:27,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-17 12:16:27,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 12:16:27,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130598873] [2021-11-17 12:16:27,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130598873] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 12:16:27,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353121038] [2021-11-17 12:16:27,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:16:27,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 12:16:27,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 12:16:27,423 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 12:16:27,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-17 12:16:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:28,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 8361 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 12:16:28,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 12:16:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-17 12:16:28,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 12:16:28,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353121038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 12:16:28,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 12:16:28,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-17 12:16:28,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300273084] [2021-11-17 12:16:28,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 12:16:28,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 12:16:28,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 12:16:28,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 12:16:28,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-17 12:16:28,906 INFO L87 Difference]: Start difference. First operand 4479 states and 6597 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-17 12:16:29,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 12:16:29,820 INFO L93 Difference]: Finished difference Result 4481 states and 6598 transitions. [2021-11-17 12:16:29,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 12:16:29,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2021-11-17 12:16:29,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 12:16:29,874 INFO L225 Difference]: With dead ends: 4481 [2021-11-17 12:16:29,874 INFO L226 Difference]: Without dead ends: 4470 [2021-11-17 12:16:29,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-17 12:16:29,877 INFO L933 BasicCegarLoop]: 4067 mSDtfsCounter, 4047 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4047 SdHoareTripleChecker+Valid, 4069 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-17 12:16:29,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4047 Valid, 4069 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-17 12:16:29,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states. [2021-11-17 12:16:30,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 4470. [2021-11-17 12:16:30,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4470 states, 3037 states have (on average 1.3398090220612446) internal successors, (4069), 3087 states have internal predecessors, (4069), 1251 states have call successors, (1251), 179 states have call predecessors, (1251), 181 states have return successors, (1260), 1229 states have call predecessors, (1260), 1235 states have call successors, (1260) [2021-11-17 12:16:30,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4470 states to 4470 states and 6580 transitions. [2021-11-17 12:16:30,068 INFO L78 Accepts]: Start accepts. Automaton has 4470 states and 6580 transitions. Word has length 23 [2021-11-17 12:16:30,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 12:16:30,068 INFO L470 AbstractCegarLoop]: Abstraction has 4470 states and 6580 transitions. [2021-11-17 12:16:30,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-17 12:16:30,069 INFO L276 IsEmpty]: Start isEmpty. Operand 4470 states and 6580 transitions. [2021-11-17 12:16:30,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-17 12:16:30,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 12:16:30,076 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-17 12:16:30,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-17 12:16:30,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 12:16:30,303 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 12:16:30,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 12:16:30,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1942876578, now seen corresponding path program 1 times [2021-11-17 12:16:30,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 12:16:30,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802751962] [2021-11-17 12:16:30,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:16:30,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 12:16:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:30,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 12:16:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:30,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 12:16:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:30,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-17 12:16:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:30,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 12:16:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:30,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 12:16:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:30,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-17 12:16:30,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 12:16:30,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802751962] [2021-11-17 12:16:30,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802751962] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 12:16:30,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839897596] [2021-11-17 12:16:30,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:16:30,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 12:16:30,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 12:16:30,756 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 12:16:30,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-17 12:16:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:32,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 8504 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 12:16:32,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 12:16:32,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-17 12:16:32,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 12:16:32,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839897596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 12:16:32,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 12:16:32,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-17 12:16:32,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457911264] [2021-11-17 12:16:32,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 12:16:32,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 12:16:32,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 12:16:32,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 12:16:32,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 12:16:32,314 INFO L87 Difference]: Start difference. First operand 4470 states and 6580 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-17 12:16:32,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 12:16:32,517 INFO L93 Difference]: Finished difference Result 9189 states and 13570 transitions. [2021-11-17 12:16:32,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 12:16:32,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2021-11-17 12:16:32,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 12:16:32,540 INFO L225 Difference]: With dead ends: 9189 [2021-11-17 12:16:32,540 INFO L226 Difference]: Without dead ends: 4734 [2021-11-17 12:16:32,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 12:16:32,561 INFO L933 BasicCegarLoop]: 4099 mSDtfsCounter, 179 mSDsluCounter, 3986 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 8085 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-17 12:16:32,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 8085 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-17 12:16:32,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4734 states. [2021-11-17 12:16:32,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4734 to 4707. [2021-11-17 12:16:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4707 states, 3212 states have (on average 1.3449564134495642) internal successors, (4320), 3269 states have internal predecessors, (4320), 1313 states have call successors, (1313), 179 states have call predecessors, (1313), 181 states have return successors, (1327), 1290 states have call predecessors, (1327), 1297 states have call successors, (1327) [2021-11-17 12:16:32,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4707 states to 4707 states and 6960 transitions. [2021-11-17 12:16:32,723 INFO L78 Accepts]: Start accepts. Automaton has 4707 states and 6960 transitions. Word has length 48 [2021-11-17 12:16:32,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 12:16:32,723 INFO L470 AbstractCegarLoop]: Abstraction has 4707 states and 6960 transitions. [2021-11-17 12:16:32,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-17 12:16:32,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4707 states and 6960 transitions. [2021-11-17 12:16:32,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-17 12:16:32,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 12:16:32,726 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-17 12:16:32,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-17 12:16:32,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 12:16:32,939 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 12:16:32,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 12:16:32,940 INFO L85 PathProgramCache]: Analyzing trace with hash -818070145, now seen corresponding path program 1 times [2021-11-17 12:16:32,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 12:16:32,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852367896] [2021-11-17 12:16:32,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:16:32,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 12:16:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:33,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 12:16:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:33,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 12:16:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:33,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-17 12:16:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:33,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 12:16:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:33,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-17 12:16:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:33,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-17 12:16:33,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 12:16:33,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852367896] [2021-11-17 12:16:33,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852367896] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 12:16:33,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368772048] [2021-11-17 12:16:33,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:16:33,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 12:16:33,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 12:16:33,300 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 12:16:33,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-17 12:16:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:16:34,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 8505 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 12:16:34,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 12:16:34,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-17 12:16:34,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 12:16:35,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-17 12:16:35,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368772048] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 12:16:35,057 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 12:16:35,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2021-11-17 12:16:35,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850194841] [2021-11-17 12:16:35,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 12:16:35,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 12:16:35,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 12:16:35,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 12:16:35,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-17 12:16:35,060 INFO L87 Difference]: Start difference. First operand 4707 states and 6960 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 12:16:38,505 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:16:44,220 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:16:50,146 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:16:58,923 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:16:59,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 12:16:59,873 INFO L93 Difference]: Finished difference Result 9608 states and 14235 transitions. [2021-11-17 12:16:59,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 12:16:59,874 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2021-11-17 12:16:59,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 12:16:59,907 INFO L225 Difference]: With dead ends: 9608 [2021-11-17 12:16:59,907 INFO L226 Difference]: Without dead ends: 4912 [2021-11-17 12:16:59,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-17 12:16:59,930 INFO L933 BasicCegarLoop]: 3513 mSDtfsCounter, 3866 mSDsluCounter, 2366 mSDsCounter, 0 mSdLazyCounter, 3288 mSolverCounterSat, 2180 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4430 SdHoareTripleChecker+Valid, 5879 SdHoareTripleChecker+Invalid, 5472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2180 IncrementalHoareTripleChecker+Valid, 3288 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2021-11-17 12:16:59,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4430 Valid, 5879 Invalid, 5472 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2180 Valid, 3288 Invalid, 4 Unknown, 0 Unchecked, 24.3s Time] [2021-11-17 12:16:59,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4912 states. [2021-11-17 12:17:00,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4912 to 4772. [2021-11-17 12:17:00,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4772 states, 3259 states have (on average 1.3445842282908869) internal successors, (4382), 3328 states have internal predecessors, (4382), 1321 states have call successors, (1321), 179 states have call predecessors, (1321), 191 states have return successors, (1361), 1296 states have call predecessors, (1361), 1305 states have call successors, (1361) [2021-11-17 12:17:00,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4772 states to 4772 states and 7064 transitions. [2021-11-17 12:17:00,089 INFO L78 Accepts]: Start accepts. Automaton has 4772 states and 7064 transitions. Word has length 54 [2021-11-17 12:17:00,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 12:17:00,090 INFO L470 AbstractCegarLoop]: Abstraction has 4772 states and 7064 transitions. [2021-11-17 12:17:00,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 12:17:00,091 INFO L276 IsEmpty]: Start isEmpty. Operand 4772 states and 7064 transitions. [2021-11-17 12:17:00,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-17 12:17:00,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 12:17:00,092 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-17 12:17:00,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-17 12:17:00,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 12:17:00,307 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 12:17:00,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 12:17:00,308 INFO L85 PathProgramCache]: Analyzing trace with hash 10363827, now seen corresponding path program 2 times [2021-11-17 12:17:00,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 12:17:00,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727383009] [2021-11-17 12:17:00,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:17:00,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 12:17:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:17:00,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 12:17:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:17:00,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 12:17:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:17:00,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 12:17:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:17:00,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-17 12:17:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:17:00,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 12:17:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:17:00,852 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-17 12:17:00,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 12:17:00,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727383009] [2021-11-17 12:17:00,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727383009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 12:17:00,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 12:17:00,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 12:17:00,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576039861] [2021-11-17 12:17:00,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 12:17:00,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 12:17:00,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 12:17:00,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 12:17:00,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-17 12:17:00,854 INFO L87 Difference]: Start difference. First operand 4772 states and 7064 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-17 12:17:07,239 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:17:13,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:17:24,725 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:17:26,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 12:17:26,176 INFO L93 Difference]: Finished difference Result 9660 states and 14341 transitions. [2021-11-17 12:17:26,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 12:17:26,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2021-11-17 12:17:26,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 12:17:26,225 INFO L225 Difference]: With dead ends: 9660 [2021-11-17 12:17:26,225 INFO L226 Difference]: Without dead ends: 4909 [2021-11-17 12:17:26,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-17 12:17:26,247 INFO L933 BasicCegarLoop]: 3795 mSDtfsCounter, 8924 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 3730 mSolverCounterSat, 5147 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9460 SdHoareTripleChecker+Valid, 5207 SdHoareTripleChecker+Invalid, 8880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5147 IncrementalHoareTripleChecker+Valid, 3730 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2021-11-17 12:17:26,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9460 Valid, 5207 Invalid, 8880 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5147 Valid, 3730 Invalid, 3 Unknown, 0 Unchecked, 24.8s Time] [2021-11-17 12:17:26,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4909 states. [2021-11-17 12:17:26,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4909 to 4750. [2021-11-17 12:17:26,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4750 states, 3244 states have (on average 1.3440197287299631) internal successors, (4360), 3310 states have internal predecessors, (4360), 1316 states have call successors, (1316), 179 states have call predecessors, (1316), 189 states have return successors, (1325), 1292 states have call predecessors, (1325), 1290 states have call successors, (1325) [2021-11-17 12:17:26,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4750 states to 4750 states and 7001 transitions. [2021-11-17 12:17:26,388 INFO L78 Accepts]: Start accepts. Automaton has 4750 states and 7001 transitions. Word has length 60 [2021-11-17 12:17:26,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 12:17:26,389 INFO L470 AbstractCegarLoop]: Abstraction has 4750 states and 7001 transitions. [2021-11-17 12:17:26,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-17 12:17:26,389 INFO L276 IsEmpty]: Start isEmpty. Operand 4750 states and 7001 transitions. [2021-11-17 12:17:26,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-17 12:17:26,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 12:17:26,397 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 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] [2021-11-17 12:17:26,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-17 12:17:26,397 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 12:17:26,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 12:17:26,398 INFO L85 PathProgramCache]: Analyzing trace with hash -736614488, now seen corresponding path program 1 times [2021-11-17 12:17:26,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 12:17:26,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641384179] [2021-11-17 12:17:26,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:17:26,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 12:17:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:17:26,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 12:17:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:17:26,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 12:17:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:17:26,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 12:17:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:17:26,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 12:17:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:17:26,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-17 12:17:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:17:26,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 12:17:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:17:26,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 12:17:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:17:26,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 12:17:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:17:26,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 12:17:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:17:26,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 12:17:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:17:26,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-17 12:17:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:17:26,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-17 12:17:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:17:26,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 12:17:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:17:27,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-17 12:17:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:17:27,004 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-17 12:17:27,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 12:17:27,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641384179] [2021-11-17 12:17:27,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641384179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 12:17:27,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 12:17:27,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 12:17:27,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517354722] [2021-11-17 12:17:27,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 12:17:27,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 12:17:27,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 12:17:27,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 12:17:27,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-17 12:17:27,007 INFO L87 Difference]: Start difference. First operand 4750 states and 7001 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-17 12:17:30,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:17:39,532 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:17:41,556 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:17:43,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:17:51,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:18:10,135 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:18:12,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:18:14,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:18:16,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 12:18:16,219 INFO L93 Difference]: Finished difference Result 9799 states and 14506 transitions. [2021-11-17 12:18:16,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 12:18:16,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 132 [2021-11-17 12:18:16,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 12:18:16,241 INFO L225 Difference]: With dead ends: 9799 [2021-11-17 12:18:16,241 INFO L226 Difference]: Without dead ends: 5064 [2021-11-17 12:18:16,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-17 12:18:16,257 INFO L933 BasicCegarLoop]: 3476 mSDtfsCounter, 4319 mSDsluCounter, 4647 mSDsCounter, 0 mSdLazyCounter, 8135 mSolverCounterSat, 3190 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4838 SdHoareTripleChecker+Valid, 8123 SdHoareTripleChecker+Invalid, 11333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3190 IncrementalHoareTripleChecker+Valid, 8135 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.5s IncrementalHoareTripleChecker+Time [2021-11-17 12:18:16,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4838 Valid, 8123 Invalid, 11333 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3190 Valid, 8135 Invalid, 8 Unknown, 0 Unchecked, 48.5s Time] [2021-11-17 12:18:16,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5064 states. [2021-11-17 12:18:16,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5064 to 4747. [2021-11-17 12:18:16,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4747 states, 3243 states have (on average 1.3428923835954363) internal successors, (4355), 3309 states have internal predecessors, (4355), 1314 states have call successors, (1314), 179 states have call predecessors, (1314), 189 states have return successors, (1323), 1290 states have call predecessors, (1323), 1288 states have call successors, (1323) [2021-11-17 12:18:16,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4747 states to 4747 states and 6992 transitions. [2021-11-17 12:18:16,400 INFO L78 Accepts]: Start accepts. Automaton has 4747 states and 6992 transitions. Word has length 132 [2021-11-17 12:18:16,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 12:18:16,400 INFO L470 AbstractCegarLoop]: Abstraction has 4747 states and 6992 transitions. [2021-11-17 12:18:16,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-17 12:18:16,400 INFO L276 IsEmpty]: Start isEmpty. Operand 4747 states and 6992 transitions. [2021-11-17 12:18:16,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-17 12:18:16,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 12:18:16,410 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 12:18:16,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-17 12:18:16,411 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 12:18:16,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 12:18:16,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1810525957, now seen corresponding path program 1 times [2021-11-17 12:18:16,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 12:18:16,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192479587] [2021-11-17 12:18:16,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:18:16,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 12:18:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:18:16,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 12:18:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:18:16,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 12:18:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:18:16,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 12:18:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:18:16,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 12:18:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:18:16,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:18:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:18:16,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-17 12:18:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:18:16,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 12:18:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:18:16,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 12:18:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:18:16,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 12:18:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:18:16,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-17 12:18:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:18:16,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-17 12:18:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:18:16,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:18:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:18:16,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 12:18:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:18:16,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-17 12:18:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:18:16,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-17 12:18:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:18:16,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-17 12:18:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:18:16,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 12:18:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:18:16,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 12:18:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:18:17,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-11-17 12:18:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:18:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-17 12:18:17,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 12:18:17,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192479587] [2021-11-17 12:18:17,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192479587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 12:18:17,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 12:18:17,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 12:18:17,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493606951] [2021-11-17 12:18:17,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 12:18:17,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 12:18:17,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 12:18:17,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 12:18:17,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 12:18:17,007 INFO L87 Difference]: Start difference. First operand 4747 states and 6992 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (26), 6 states have call predecessors, (26), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-17 12:18:19,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:18:23,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:18:30,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:18:32,938 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:18:34,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:18:40,721 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:18:57,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:18:59,932 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:19:01,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 12:19:01,430 INFO L93 Difference]: Finished difference Result 10284 states and 15303 transitions. [2021-11-17 12:19:01,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-17 12:19:01,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (26), 6 states have call predecessors, (26), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 162 [2021-11-17 12:19:01,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 12:19:01,454 INFO L225 Difference]: With dead ends: 10284 [2021-11-17 12:19:01,455 INFO L226 Difference]: Without dead ends: 5558 [2021-11-17 12:19:01,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-17 12:19:01,472 INFO L933 BasicCegarLoop]: 3644 mSDtfsCounter, 3266 mSDsluCounter, 3857 mSDsCounter, 0 mSdLazyCounter, 6571 mSolverCounterSat, 2856 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3915 SdHoareTripleChecker+Valid, 7501 SdHoareTripleChecker+Invalid, 9434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2856 IncrementalHoareTripleChecker+Valid, 6571 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.7s IncrementalHoareTripleChecker+Time [2021-11-17 12:19:01,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3915 Valid, 7501 Invalid, 9434 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2856 Valid, 6571 Invalid, 7 Unknown, 0 Unchecked, 43.7s Time] [2021-11-17 12:19:01,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2021-11-17 12:19:01,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 5153. [2021-11-17 12:19:01,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 3556 states have (on average 1.359955005624297) internal successors, (4836), 3622 states have internal predecessors, (4836), 1407 states have call successors, (1407), 179 states have call predecessors, (1407), 189 states have return successors, (1417), 1384 states have call predecessors, (1417), 1381 states have call successors, (1417) [2021-11-17 12:19:01,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 7660 transitions. [2021-11-17 12:19:01,737 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 7660 transitions. Word has length 162 [2021-11-17 12:19:01,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 12:19:01,738 INFO L470 AbstractCegarLoop]: Abstraction has 5153 states and 7660 transitions. [2021-11-17 12:19:01,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (26), 6 states have call predecessors, (26), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-17 12:19:01,738 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 7660 transitions. [2021-11-17 12:19:01,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-17 12:19:01,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 12:19:01,746 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-17 12:19:01,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-17 12:19:01,747 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 12:19:01,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 12:19:01,747 INFO L85 PathProgramCache]: Analyzing trace with hash 287156355, now seen corresponding path program 1 times [2021-11-17 12:19:01,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 12:19:01,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478570581] [2021-11-17 12:19:01,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:19:01,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 12:19:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:19:02,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 12:19:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:19:02,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 12:19:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:19:02,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 12:19:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:19:02,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-17 12:19:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:19:02,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 12:19:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:19:02,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-17 12:19:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:19:02,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:19:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:19:02,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 12:19:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:19:02,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 12:19:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:19:02,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-17 12:19:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:19:02,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:19:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:19:02,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 12:19:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:19:02,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-17 12:19:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:19:02,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:19:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:19:02,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 12:19:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:19:02,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 12:19:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:19:02,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 12:19:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:19:02,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 12:19:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:19:02,441 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-17 12:19:02,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 12:19:02,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478570581] [2021-11-17 12:19:02,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478570581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 12:19:02,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 12:19:02,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 12:19:02,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827762212] [2021-11-17 12:19:02,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 12:19:02,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 12:19:02,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 12:19:02,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 12:19:02,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-17 12:19:02,443 INFO L87 Difference]: Start difference. First operand 5153 states and 7660 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (23), 8 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 12:19:04,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:19:12,472 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:19:24,885 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:19:27,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:19:36,679 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:20:02,884 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:20:04,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:20:06,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:20:09,026 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:20:11,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 12:20:11,575 INFO L93 Difference]: Finished difference Result 10755 states and 16080 transitions. [2021-11-17 12:20:11,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-17 12:20:11,576 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (23), 8 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 164 [2021-11-17 12:20:11,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 12:20:11,594 INFO L225 Difference]: With dead ends: 10755 [2021-11-17 12:20:11,595 INFO L226 Difference]: Without dead ends: 5623 [2021-11-17 12:20:11,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-17 12:20:11,609 INFO L933 BasicCegarLoop]: 3355 mSDtfsCounter, 4884 mSDsluCounter, 3919 mSDsCounter, 0 mSdLazyCounter, 10765 mSolverCounterSat, 4222 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5406 SdHoareTripleChecker+Valid, 7274 SdHoareTripleChecker+Invalid, 14995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4222 IncrementalHoareTripleChecker+Valid, 10765 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.0s IncrementalHoareTripleChecker+Time [2021-11-17 12:20:11,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5406 Valid, 7274 Invalid, 14995 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4222 Valid, 10765 Invalid, 8 Unknown, 0 Unchecked, 68.0s Time] [2021-11-17 12:20:11,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5623 states. [2021-11-17 12:20:11,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5623 to 5156. [2021-11-17 12:20:11,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5156 states, 3558 states have (on average 1.3597526700393479) internal successors, (4838), 3625 states have internal predecessors, (4838), 1407 states have call successors, (1407), 179 states have call predecessors, (1407), 190 states have return successors, (1420), 1384 states have call predecessors, (1420), 1381 states have call successors, (1420) [2021-11-17 12:20:11,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5156 states to 5156 states and 7665 transitions. [2021-11-17 12:20:11,778 INFO L78 Accepts]: Start accepts. Automaton has 5156 states and 7665 transitions. Word has length 164 [2021-11-17 12:20:11,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 12:20:11,779 INFO L470 AbstractCegarLoop]: Abstraction has 5156 states and 7665 transitions. [2021-11-17 12:20:11,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (23), 8 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 12:20:11,779 INFO L276 IsEmpty]: Start isEmpty. Operand 5156 states and 7665 transitions. [2021-11-17 12:20:11,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-17 12:20:11,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 12:20:11,790 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 12:20:11,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-17 12:20:11,791 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 12:20:11,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 12:20:11,791 INFO L85 PathProgramCache]: Analyzing trace with hash 510318449, now seen corresponding path program 1 times [2021-11-17 12:20:11,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 12:20:11,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676218821] [2021-11-17 12:20:11,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:20:11,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 12:20:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 12:20:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 12:20:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 12:20:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:20:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 12:20:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:20:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 12:20:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:20:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-17 12:20:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:20:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 12:20:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-17 12:20:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 12:20:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-17 12:20:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 12:20:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:20:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 12:20:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-17 12:20:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:20:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-11-17 12:20:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 12:20:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 12:20:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 12:20:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:20:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-17 12:20:12,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 12:20:12,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676218821] [2021-11-17 12:20:12,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676218821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 12:20:12,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 12:20:12,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 12:20:12,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663461147] [2021-11-17 12:20:12,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 12:20:12,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 12:20:12,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 12:20:12,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 12:20:12,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-17 12:20:12,507 INFO L87 Difference]: Start difference. First operand 5156 states and 7665 transitions. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 12:20:15,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:20:17,974 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:20:22,618 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:20:36,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:20:38,944 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:20:48,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:21:03,899 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:21:20,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:21:22,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:21:24,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:21:26,361 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:21:28,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:21:30,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 12:21:30,896 INFO L93 Difference]: Finished difference Result 11863 states and 17958 transitions. [2021-11-17 12:21:30,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-17 12:21:30,897 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 203 [2021-11-17 12:21:30,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 12:21:30,923 INFO L225 Difference]: With dead ends: 11863 [2021-11-17 12:21:30,923 INFO L226 Difference]: Without dead ends: 6728 [2021-11-17 12:21:30,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-17 12:21:30,940 INFO L933 BasicCegarLoop]: 3878 mSDtfsCounter, 3358 mSDsluCounter, 6053 mSDsCounter, 0 mSdLazyCounter, 12002 mSolverCounterSat, 2843 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4002 SdHoareTripleChecker+Valid, 9931 SdHoareTripleChecker+Invalid, 14854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2843 IncrementalHoareTripleChecker+Valid, 12002 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.3s IncrementalHoareTripleChecker+Time [2021-11-17 12:21:30,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4002 Valid, 9931 Invalid, 14854 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2843 Valid, 12002 Invalid, 9 Unknown, 0 Unchecked, 77.3s Time] [2021-11-17 12:21:30,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6728 states. [2021-11-17 12:21:31,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6728 to 5176. [2021-11-17 12:21:31,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 3574 states have (on average 1.3592613318410744) internal successors, (4858), 3641 states have internal predecessors, (4858), 1411 states have call successors, (1411), 179 states have call predecessors, (1411), 190 states have return successors, (1424), 1388 states have call predecessors, (1424), 1385 states have call successors, (1424) [2021-11-17 12:21:31,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 7693 transitions. [2021-11-17 12:21:31,110 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 7693 transitions. Word has length 203 [2021-11-17 12:21:31,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 12:21:31,111 INFO L470 AbstractCegarLoop]: Abstraction has 5176 states and 7693 transitions. [2021-11-17 12:21:31,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 12:21:31,112 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 7693 transitions. [2021-11-17 12:21:31,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-17 12:21:31,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 12:21:31,121 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-17 12:21:31,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-17 12:21:31,121 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 12:21:31,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 12:21:31,122 INFO L85 PathProgramCache]: Analyzing trace with hash 60815488, now seen corresponding path program 1 times [2021-11-17 12:21:31,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 12:21:31,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191853919] [2021-11-17 12:21:31,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:21:31,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 12:21:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:21:31,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 12:21:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:21:31,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 12:21:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:21:31,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 12:21:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:21:31,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 12:21:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:21:31,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 12:21:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:21:31,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 12:21:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:21:31,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:21:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:21:31,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 12:21:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:21:31,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 12:21:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:21:31,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 12:21:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:21:31,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:21:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:21:31,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 12:21:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:21:31,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-17 12:21:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:21:31,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:21:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:21:31,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-17 12:21:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:21:31,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 12:21:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:21:31,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 12:21:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:21:31,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-17 12:21:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:21:31,806 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-17 12:21:31,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 12:21:31,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191853919] [2021-11-17 12:21:31,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191853919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 12:21:31,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 12:21:31,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 12:21:31,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674103755] [2021-11-17 12:21:31,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 12:21:31,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 12:21:31,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 12:21:31,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 12:21:31,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-17 12:21:31,809 INFO L87 Difference]: Start difference. First operand 5176 states and 7693 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (23), 8 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 12:21:35,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:21:38,530 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:21:41,820 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:21:54,432 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:22:05,412 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:22:32,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:22:34,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:22:36,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:22:38,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:22:40,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 12:22:40,918 INFO L93 Difference]: Finished difference Result 10799 states and 16146 transitions. [2021-11-17 12:22:40,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-17 12:22:40,919 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (23), 8 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 169 [2021-11-17 12:22:40,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 12:22:40,940 INFO L225 Difference]: With dead ends: 10799 [2021-11-17 12:22:40,940 INFO L226 Difference]: Without dead ends: 5644 [2021-11-17 12:22:40,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-17 12:22:40,957 INFO L933 BasicCegarLoop]: 3355 mSDtfsCounter, 4884 mSDsluCounter, 3921 mSDsCounter, 0 mSdLazyCounter, 10766 mSolverCounterSat, 4220 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5406 SdHoareTripleChecker+Valid, 7276 SdHoareTripleChecker+Invalid, 14993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4220 IncrementalHoareTripleChecker+Valid, 10766 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.1s IncrementalHoareTripleChecker+Time [2021-11-17 12:22:40,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5406 Valid, 7276 Invalid, 14993 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4220 Valid, 10766 Invalid, 7 Unknown, 0 Unchecked, 68.1s Time] [2021-11-17 12:22:40,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5644 states. [2021-11-17 12:22:41,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5644 to 5177. [2021-11-17 12:22:41,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5177 states, 3575 states have (on average 1.3591608391608392) internal successors, (4859), 3642 states have internal predecessors, (4859), 1411 states have call successors, (1411), 179 states have call predecessors, (1411), 190 states have return successors, (1424), 1388 states have call predecessors, (1424), 1385 states have call successors, (1424) [2021-11-17 12:22:41,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5177 states to 5177 states and 7694 transitions. [2021-11-17 12:22:41,207 INFO L78 Accepts]: Start accepts. Automaton has 5177 states and 7694 transitions. Word has length 169 [2021-11-17 12:22:41,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 12:22:41,207 INFO L470 AbstractCegarLoop]: Abstraction has 5177 states and 7694 transitions. [2021-11-17 12:22:41,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (23), 8 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 12:22:41,207 INFO L276 IsEmpty]: Start isEmpty. Operand 5177 states and 7694 transitions. [2021-11-17 12:22:41,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-17 12:22:41,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 12:22:41,216 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-17 12:22:41,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-17 12:22:41,217 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 12:22:41,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 12:22:41,217 INFO L85 PathProgramCache]: Analyzing trace with hash 785578307, now seen corresponding path program 1 times [2021-11-17 12:22:41,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 12:22:41,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616780589] [2021-11-17 12:22:41,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:22:41,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 12:22:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:22:41,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 12:22:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:22:41,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 12:22:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:22:41,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 12:22:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:22:41,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-17 12:22:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:22:41,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 12:22:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:22:41,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-17 12:22:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:22:41,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:22:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:22:41,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 12:22:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:22:41,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 12:22:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:22:41,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-17 12:22:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:22:41,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:22:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:22:41,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 12:22:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:22:41,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-17 12:22:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:22:41,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:22:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:22:41,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 12:22:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:22:41,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 12:22:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:22:41,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 12:22:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:22:41,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 12:22:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:22:41,970 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-17 12:22:41,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 12:22:41,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616780589] [2021-11-17 12:22:41,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616780589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 12:22:41,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 12:22:41,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-17 12:22:41,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230195719] [2021-11-17 12:22:41,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 12:22:41,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 12:22:41,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 12:22:41,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 12:22:41,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-17 12:22:41,973 INFO L87 Difference]: Start difference. First operand 5177 states and 7694 transitions. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (23), 8 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 12:22:44,078 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:22:48,873 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:22:52,042 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:23:04,224 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:23:14,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:23:41,363 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:23:43,394 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:23:45,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:23:47,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 12:23:47,673 INFO L93 Difference]: Finished difference Result 10803 states and 16150 transitions. [2021-11-17 12:23:47,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-17 12:23:47,675 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (23), 8 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 164 [2021-11-17 12:23:47,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 12:23:47,694 INFO L225 Difference]: With dead ends: 10803 [2021-11-17 12:23:47,694 INFO L226 Difference]: Without dead ends: 5647 [2021-11-17 12:23:47,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-11-17 12:23:47,710 INFO L933 BasicCegarLoop]: 3357 mSDtfsCounter, 5325 mSDsluCounter, 5000 mSDsCounter, 0 mSdLazyCounter, 10921 mSolverCounterSat, 5096 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5847 SdHoareTripleChecker+Valid, 8357 SdHoareTripleChecker+Invalid, 16024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5096 IncrementalHoareTripleChecker+Valid, 10921 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.5s IncrementalHoareTripleChecker+Time [2021-11-17 12:23:47,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5847 Valid, 8357 Invalid, 16024 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5096 Valid, 10921 Invalid, 7 Unknown, 0 Unchecked, 64.5s Time] [2021-11-17 12:23:47,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5647 states. [2021-11-17 12:23:47,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5647 to 5179. [2021-11-17 12:23:47,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 3577 states have (on average 1.3589600223651104) internal successors, (4861), 3644 states have internal predecessors, (4861), 1411 states have call successors, (1411), 179 states have call predecessors, (1411), 190 states have return successors, (1424), 1388 states have call predecessors, (1424), 1385 states have call successors, (1424) [2021-11-17 12:23:47,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 7696 transitions. [2021-11-17 12:23:47,888 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 7696 transitions. Word has length 164 [2021-11-17 12:23:47,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 12:23:47,888 INFO L470 AbstractCegarLoop]: Abstraction has 5179 states and 7696 transitions. [2021-11-17 12:23:47,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (23), 8 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 12:23:47,888 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 7696 transitions. [2021-11-17 12:23:47,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-17 12:23:47,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 12:23:47,898 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-17 12:23:47,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-17 12:23:47,898 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 12:23:47,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 12:23:47,899 INFO L85 PathProgramCache]: Analyzing trace with hash 2089767360, now seen corresponding path program 1 times [2021-11-17 12:23:47,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 12:23:47,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827927796] [2021-11-17 12:23:47,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:23:47,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 12:23:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:23:48,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 12:23:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:23:48,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 12:23:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:23:48,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 12:23:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:23:48,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 12:23:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:23:48,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 12:23:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:23:48,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-17 12:23:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:23:48,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:23:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:23:48,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 12:23:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:23:48,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 12:23:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:23:48,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 12:23:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:23:48,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:23:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:23:48,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-17 12:23:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:23:48,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-17 12:23:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:23:48,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:23:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:23:48,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-17 12:23:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:23:48,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 12:23:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:23:48,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 12:23:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:23:48,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-17 12:23:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:23:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-17 12:23:48,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 12:23:48,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827927796] [2021-11-17 12:23:48,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827927796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 12:23:48,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 12:23:48,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-17 12:23:48,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948804080] [2021-11-17 12:23:48,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 12:23:48,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-17 12:23:48,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 12:23:48,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-17 12:23:48,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-17 12:23:48,926 INFO L87 Difference]: Start difference. First operand 5179 states and 7696 transitions. Second operand has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 6 states have internal predecessors, (118), 4 states have call successors, (23), 9 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-17 12:23:52,248 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:23:55,709 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:23:57,039 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:23:59,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:24:06,131 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:24:30,610 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:24:32,772 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:24:51,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:25:21,324 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:25:23,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:25:46,254 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:25:48,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:25:50,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:25:52,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:25:54,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:25:56,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:26:01,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 12:26:01,344 INFO L93 Difference]: Finished difference Result 12039 states and 18242 transitions. [2021-11-17 12:26:01,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-17 12:26:01,344 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 6 states have internal predecessors, (118), 4 states have call successors, (23), 9 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 169 [2021-11-17 12:26:01,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 12:26:01,380 INFO L225 Difference]: With dead ends: 12039 [2021-11-17 12:26:01,380 INFO L226 Difference]: Without dead ends: 6881 [2021-11-17 12:26:01,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2021-11-17 12:26:01,400 INFO L933 BasicCegarLoop]: 4010 mSDtfsCounter, 3545 mSDsluCounter, 14670 mSDsCounter, 0 mSdLazyCounter, 22442 mSolverCounterSat, 2842 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 124.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4208 SdHoareTripleChecker+Valid, 18680 SdHoareTripleChecker+Invalid, 25295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 2842 IncrementalHoareTripleChecker+Valid, 22442 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 130.5s IncrementalHoareTripleChecker+Time [2021-11-17 12:26:01,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4208 Valid, 18680 Invalid, 25295 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [2842 Valid, 22442 Invalid, 11 Unknown, 0 Unchecked, 130.5s Time] [2021-11-17 12:26:01,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6881 states. [2021-11-17 12:26:01,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6881 to 5250. [2021-11-17 12:26:01,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5250 states, 3633 states have (on average 1.3605835397742911) internal successors, (4943), 3708 states have internal predecessors, (4943), 1424 states have call successors, (1424), 181 states have call predecessors, (1424), 192 states have return successors, (1437), 1393 states have call predecessors, (1437), 1398 states have call successors, (1437) [2021-11-17 12:26:01,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5250 states to 5250 states and 7804 transitions. [2021-11-17 12:26:01,691 INFO L78 Accepts]: Start accepts. Automaton has 5250 states and 7804 transitions. Word has length 169 [2021-11-17 12:26:01,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 12:26:01,692 INFO L470 AbstractCegarLoop]: Abstraction has 5250 states and 7804 transitions. [2021-11-17 12:26:01,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 6 states have internal predecessors, (118), 4 states have call successors, (23), 9 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-17 12:26:01,692 INFO L276 IsEmpty]: Start isEmpty. Operand 5250 states and 7804 transitions. [2021-11-17 12:26:01,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-17 12:26:01,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 12:26:01,702 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-17 12:26:01,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-17 12:26:01,702 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 12:26:01,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 12:26:01,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1507502719, now seen corresponding path program 1 times [2021-11-17 12:26:01,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 12:26:01,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25912621] [2021-11-17 12:26:01,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:26:01,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 12:26:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:02,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 12:26:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:02,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 12:26:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:02,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 12:26:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:02,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-17 12:26:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:02,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-17 12:26:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:02,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-17 12:26:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:02,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:26:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:02,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 12:26:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:02,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 12:26:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:02,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-17 12:26:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:02,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:26:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:02,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 12:26:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:02,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-17 12:26:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:02,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:26:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:02,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 12:26:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:02,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 12:26:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:02,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-17 12:26:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:02,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 12:26:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-17 12:26:02,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 12:26:02,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25912621] [2021-11-17 12:26:02,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25912621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 12:26:02,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 12:26:02,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-17 12:26:02,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411009323] [2021-11-17 12:26:02,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 12:26:02,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-17 12:26:02,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 12:26:02,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-17 12:26:02,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-17 12:26:02,395 INFO L87 Difference]: Start difference. First operand 5250 states and 7804 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (23), 8 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 12:26:06,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:26:09,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:26:20,600 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:26:29,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:26:52,152 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:26:54,205 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:26:56,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 12:26:56,147 INFO L93 Difference]: Finished difference Result 11018 states and 16487 transitions. [2021-11-17 12:26:56,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-17 12:26:56,148 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (23), 8 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 164 [2021-11-17 12:26:56,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 12:26:56,162 INFO L225 Difference]: With dead ends: 11018 [2021-11-17 12:26:56,163 INFO L226 Difference]: Without dead ends: 5789 [2021-11-17 12:26:56,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-17 12:26:56,175 INFO L933 BasicCegarLoop]: 3389 mSDtfsCounter, 3138 mSDsluCounter, 4014 mSDsCounter, 0 mSdLazyCounter, 9106 mSolverCounterSat, 2834 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3674 SdHoareTripleChecker+Valid, 7403 SdHoareTripleChecker+Invalid, 11946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2834 IncrementalHoareTripleChecker+Valid, 9106 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.8s IncrementalHoareTripleChecker+Time [2021-11-17 12:26:56,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3674 Valid, 7403 Invalid, 11946 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2834 Valid, 9106 Invalid, 6 Unknown, 0 Unchecked, 52.8s Time] [2021-11-17 12:26:56,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5789 states. [2021-11-17 12:26:56,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5789 to 5251. [2021-11-17 12:26:56,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 3634 states have (on average 1.360484314804623) internal successors, (4944), 3709 states have internal predecessors, (4944), 1424 states have call successors, (1424), 181 states have call predecessors, (1424), 192 states have return successors, (1437), 1393 states have call predecessors, (1437), 1398 states have call successors, (1437) [2021-11-17 12:26:56,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 7805 transitions. [2021-11-17 12:26:56,367 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 7805 transitions. Word has length 164 [2021-11-17 12:26:56,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 12:26:56,368 INFO L470 AbstractCegarLoop]: Abstraction has 5251 states and 7805 transitions. [2021-11-17 12:26:56,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (23), 8 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-17 12:26:56,368 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 7805 transitions. [2021-11-17 12:26:56,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-17 12:26:56,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 12:26:56,381 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 12:26:56,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-17 12:26:56,381 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 12:26:56,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 12:26:56,382 INFO L85 PathProgramCache]: Analyzing trace with hash -2050475553, now seen corresponding path program 1 times [2021-11-17 12:26:56,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 12:26:56,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069090884] [2021-11-17 12:26:56,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:26:56,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 12:26:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:56,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 12:26:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:56,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 12:26:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:56,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 12:26:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:56,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 12:26:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:56,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 12:26:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:56,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:26:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:56,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 12:26:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:56,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 12:26:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:56,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 12:26:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:56,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 12:26:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:56,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 12:26:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:56,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 12:26:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:56,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 12:26:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:56,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 12:26:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:56,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-17 12:26:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:56,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 12:26:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:56,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-17 12:26:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:56,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-17 12:26:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:56,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 12:26:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:56,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-11-17 12:26:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:26:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-17 12:26:56,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 12:26:56,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069090884] [2021-11-17 12:26:56,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069090884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 12:26:56,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 12:26:56,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 12:26:56,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401982260] [2021-11-17 12:26:56,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 12:26:56,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 12:26:56,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 12:26:56,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 12:26:56,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-17 12:26:56,880 INFO L87 Difference]: Start difference. First operand 5251 states and 7805 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-17 12:27:01,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:27:09,496 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:27:11,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:27:12,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:27:19,426 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:27:36,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:27:39,064 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:27:40,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 12:27:40,462 INFO L93 Difference]: Finished difference Result 10797 states and 16125 transitions. [2021-11-17 12:27:40,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 12:27:40,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 170 [2021-11-17 12:27:40,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 12:27:40,477 INFO L225 Difference]: With dead ends: 10797 [2021-11-17 12:27:40,477 INFO L226 Difference]: Without dead ends: 5565 [2021-11-17 12:27:40,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-17 12:27:40,488 INFO L933 BasicCegarLoop]: 3461 mSDtfsCounter, 2404 mSDsluCounter, 3479 mSDsCounter, 0 mSdLazyCounter, 6159 mSolverCounterSat, 1772 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2923 SdHoareTripleChecker+Valid, 6940 SdHoareTripleChecker+Invalid, 7937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1772 IncrementalHoareTripleChecker+Valid, 6159 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.8s IncrementalHoareTripleChecker+Time [2021-11-17 12:27:40,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2923 Valid, 6940 Invalid, 7937 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1772 Valid, 6159 Invalid, 6 Unknown, 0 Unchecked, 42.8s Time] [2021-11-17 12:27:40,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5565 states. [2021-11-17 12:27:40,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5565 to 5251. [2021-11-17 12:27:40,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 3634 states have (on average 1.359933957072097) internal successors, (4942), 3709 states have internal predecessors, (4942), 1424 states have call successors, (1424), 181 states have call predecessors, (1424), 192 states have return successors, (1437), 1393 states have call predecessors, (1437), 1398 states have call successors, (1437) [2021-11-17 12:27:40,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 7803 transitions. [2021-11-17 12:27:40,644 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 7803 transitions. Word has length 170 [2021-11-17 12:27:40,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 12:27:40,644 INFO L470 AbstractCegarLoop]: Abstraction has 5251 states and 7803 transitions. [2021-11-17 12:27:40,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-17 12:27:40,645 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 7803 transitions. [2021-11-17 12:27:40,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-17 12:27:40,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 12:27:40,653 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 12:27:40,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-17 12:27:40,654 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 12:27:40,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 12:27:40,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1932034079, now seen corresponding path program 1 times [2021-11-17 12:27:40,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 12:27:40,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286269542] [2021-11-17 12:27:40,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:27:40,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 12:27:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:27:40,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 12:27:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:27:40,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 12:27:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:27:40,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 12:27:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:27:41,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 12:27:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:27:41,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 12:27:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:27:41,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:27:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:27:41,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 12:27:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:27:41,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 12:27:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:27:41,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 12:27:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:27:41,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 12:27:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:27:41,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 12:27:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:27:41,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 12:27:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:27:41,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 12:27:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:27:41,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-17 12:27:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:27:41,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-17 12:27:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:27:41,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 12:27:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:27:41,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-17 12:27:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:27:41,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-17 12:27:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:27:41,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-17 12:27:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:27:41,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-11-17 12:27:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:27:41,114 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-17 12:27:41,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 12:27:41,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286269542] [2021-11-17 12:27:41,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286269542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 12:27:41,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 12:27:41,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 12:27:41,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116807809] [2021-11-17 12:27:41,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 12:27:41,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 12:27:41,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 12:27:41,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 12:27:41,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-17 12:27:41,116 INFO L87 Difference]: Start difference. First operand 5251 states and 7803 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-17 12:27:46,053 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:27:56,675 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:27:58,782 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:28:00,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:28:10,959 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:28:32,329 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:28:34,386 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:28:36,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:28:38,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 12:28:38,537 INFO L93 Difference]: Finished difference Result 10806 states and 16133 transitions. [2021-11-17 12:28:38,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 12:28:38,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 170 [2021-11-17 12:28:38,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 12:28:38,554 INFO L225 Difference]: With dead ends: 10806 [2021-11-17 12:28:38,555 INFO L226 Difference]: Without dead ends: 5564 [2021-11-17 12:28:38,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-17 12:28:38,569 INFO L933 BasicCegarLoop]: 3465 mSDtfsCounter, 2413 mSDsluCounter, 5076 mSDsCounter, 0 mSdLazyCounter, 8673 mSolverCounterSat, 1778 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2932 SdHoareTripleChecker+Valid, 8541 SdHoareTripleChecker+Invalid, 10459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1778 IncrementalHoareTripleChecker+Valid, 8673 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.6s IncrementalHoareTripleChecker+Time [2021-11-17 12:28:38,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2932 Valid, 8541 Invalid, 10459 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1778 Valid, 8673 Invalid, 8 Unknown, 0 Unchecked, 56.6s Time] [2021-11-17 12:28:38,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5564 states. [2021-11-17 12:28:38,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5564 to 5245. [2021-11-17 12:28:38,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5245 states, 3632 states have (on average 1.3595814977973568) internal successors, (4938), 3707 states have internal predecessors, (4938), 1420 states have call successors, (1420), 181 states have call predecessors, (1420), 192 states have return successors, (1433), 1389 states have call predecessors, (1433), 1394 states have call successors, (1433) [2021-11-17 12:28:38,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 7791 transitions. [2021-11-17 12:28:38,739 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 7791 transitions. Word has length 170 [2021-11-17 12:28:38,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 12:28:38,739 INFO L470 AbstractCegarLoop]: Abstraction has 5245 states and 7791 transitions. [2021-11-17 12:28:38,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-17 12:28:38,739 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 7791 transitions. [2021-11-17 12:28:38,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-17 12:28:38,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 12:28:38,749 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 12:28:38,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-17 12:28:38,750 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 12:28:38,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 12:28:38,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1905476737, now seen corresponding path program 1 times [2021-11-17 12:28:38,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 12:28:38,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537559182] [2021-11-17 12:28:38,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:28:38,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 12:28:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:28:39,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 12:28:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:28:39,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 12:28:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:28:39,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 12:28:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:28:39,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 12:28:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:28:39,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 12:28:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:28:39,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:28:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:28:39,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 12:28:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:28:39,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 12:28:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:28:39,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-17 12:28:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:28:39,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-17 12:28:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:28:39,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-17 12:28:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:28:39,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-17 12:28:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:28:39,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 12:28:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:28:39,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-17 12:28:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:28:39,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 12:28:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:28:39,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-17 12:28:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:28:39,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 12:28:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:28:39,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-17 12:28:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:28:39,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 12:28:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:28:39,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-17 12:28:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:28:39,202 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-17 12:28:39,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 12:28:39,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537559182] [2021-11-17 12:28:39,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537559182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 12:28:39,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 12:28:39,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 12:28:39,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925890552] [2021-11-17 12:28:39,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 12:28:39,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 12:28:39,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 12:28:39,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 12:28:39,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-17 12:28:39,204 INFO L87 Difference]: Start difference. First operand 5245 states and 7791 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-17 12:28:40,291 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:28:43,565 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:28:46,341 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:28:54,214 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:28:56,259 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:29:03,360 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:29:20,472 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:29:22,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 12:29:23,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 12:29:23,900 INFO L93 Difference]: Finished difference Result 10785 states and 16099 transitions. [2021-11-17 12:29:23,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 12:29:23,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 173 [2021-11-17 12:29:23,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 12:29:23,916 INFO L225 Difference]: With dead ends: 10785 [2021-11-17 12:29:23,917 INFO L226 Difference]: Without dead ends: 5561 [2021-11-17 12:29:23,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-17 12:29:23,929 INFO L933 BasicCegarLoop]: 3452 mSDtfsCounter, 2404 mSDsluCounter, 3455 mSDsCounter, 0 mSdLazyCounter, 6160 mSolverCounterSat, 1767 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2923 SdHoareTripleChecker+Valid, 6907 SdHoareTripleChecker+Invalid, 7933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1767 IncrementalHoareTripleChecker+Valid, 6160 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.0s IncrementalHoareTripleChecker+Time [2021-11-17 12:29:23,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2923 Valid, 6907 Invalid, 7933 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1767 Valid, 6160 Invalid, 6 Unknown, 0 Unchecked, 44.0s Time] [2021-11-17 12:29:23,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5561 states. [2021-11-17 12:29:24,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5561 to 5247. [2021-11-17 12:29:24,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5247 states, 3634 states have (on average 1.3593835993395706) internal successors, (4940), 3709 states have internal predecessors, (4940), 1420 states have call successors, (1420), 181 states have call predecessors, (1420), 192 states have return successors, (1433), 1389 states have call predecessors, (1433), 1394 states have call successors, (1433) [2021-11-17 12:29:24,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 7793 transitions. [2021-11-17 12:29:24,072 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 7793 transitions. Word has length 173 [2021-11-17 12:29:24,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 12:29:24,073 INFO L470 AbstractCegarLoop]: Abstraction has 5247 states and 7793 transitions. [2021-11-17 12:29:24,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-17 12:29:24,073 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 7793 transitions. [2021-11-17 12:29:24,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-17 12:29:24,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 12:29:24,080 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 12:29:24,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-17 12:29:24,080 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 12:29:24,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 12:29:24,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1000196545, now seen corresponding path program 1 times [2021-11-17 12:29:24,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 12:29:24,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204131224] [2021-11-17 12:29:24,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 12:29:24,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 12:29:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:29:24,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 12:29:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:29:24,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 12:29:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:29:24,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-17 12:29:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:29:24,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 12:29:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:29:24,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 12:29:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:29:24,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 12:29:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:29:24,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-17 12:29:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:29:24,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 12:29:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:29:24,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-17 12:29:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:29:24,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-17 12:29:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:29:24,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-17 12:29:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:29:24,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-17 12:29:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:29:24,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 12:29:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:29:24,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-17 12:29:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:29:24,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 12:29:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:29:24,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-17 12:29:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:29:24,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 12:29:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:29:24,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-17 12:29:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:29:24,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 12:29:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:29:24,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-17 12:29:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 12:29:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-17 12:29:24,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 12:29:24,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204131224] [2021-11-17 12:29:24,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204131224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 12:29:24,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 12:29:24,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 12:29:24,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839920894] [2021-11-17 12:29:24,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 12:29:24,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 12:29:24,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 12:29:24,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 12:29:24,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-17 12:29:24,520 INFO L87 Difference]: Start difference. First operand 5247 states and 7793 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-17 12:29:28,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15