./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 c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-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 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 15:17:15,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 15:17:15,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 15:17:15,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 15:17:15,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 15:17:15,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 15:17:15,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 15:17:15,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 15:17:15,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 15:17:15,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 15:17:15,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 15:17:15,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 15:17:15,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 15:17:15,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 15:17:15,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 15:17:15,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 15:17:15,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 15:17:15,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 15:17:15,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 15:17:15,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 15:17:15,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 15:17:15,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 15:17:15,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 15:17:15,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 15:17:15,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 15:17:15,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 15:17:15,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 15:17:15,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 15:17:15,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 15:17:15,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 15:17:15,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 15:17:15,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 15:17:15,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 15:17:15,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 15:17:15,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 15:17:15,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 15:17:15,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 15:17:15,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 15:17:15,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 15:17:15,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 15:17:15,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 15:17:15,332 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 15:17:15,345 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 15:17:15,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 15:17:15,345 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 15:17:15,345 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 15:17:15,346 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 15:17:15,346 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 15:17:15,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 15:17:15,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 15:17:15,347 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 15:17:15,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 15:17:15,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 15:17:15,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 15:17:15,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 15:17:15,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 15:17:15,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 15:17:15,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 15:17:15,348 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 15:17:15,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 15:17:15,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 15:17:15,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 15:17:15,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 15:17:15,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 15:17:15,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 15:17:15,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 15:17:15,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 15:17:15,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 15:17:15,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 15:17:15,351 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 15:17:15,351 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 15:17:15,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 15:17:15,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 15:17:15,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d62cca735e5e5c3ed49d61d09e2b8d7696fac03708570c9e23afbb5bfdcaa275 [2021-12-18 15:17:15,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 15:17:15,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 15:17:15,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 15:17:15,511 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 15:17:15,513 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 15:17:15,514 INFO L432 ainManager$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 [2021-12-18 15:17:15,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81a274141/2455b5e68a204394aab9258c65b3aeb9/FLAG69b0610b6 [2021-12-18 15:17:16,197 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 15:17:16,198 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 [2021-12-18 15:17:16,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81a274141/2455b5e68a204394aab9258c65b3aeb9/FLAG69b0610b6 [2021-12-18 15:17:16,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81a274141/2455b5e68a204394aab9258c65b3aeb9 [2021-12-18 15:17:16,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 15:17:16,349 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 15:17:16,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 15:17:16,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 15:17:16,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 15:17:16,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:17:16" (1/1) ... [2021-12-18 15:17:16,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e9dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:17:16, skipping insertion in model container [2021-12-18 15:17:16,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:17:16" (1/1) ... [2021-12-18 15:17:16,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 15:17:16,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 15:17:18,162 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] [2021-12-18 15:17:18,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 15:17:18,334 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 15:17:18,618 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] [2021-12-18 15:17:18,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 15:17:18,776 INFO L208 MainTranslator]: Completed translation [2021-12-18 15:17:18,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:17:18 WrapperNode [2021-12-18 15:17:18,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 15:17:18,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 15:17:18,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 15:17:18,779 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 15:17:18,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:17:18" (1/1) ... [2021-12-18 15:17:18,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:17:18" (1/1) ... [2021-12-18 15:17:19,213 INFO L137 Inliner]: procedures = 359, calls = 7215, calls flagged for inlining = 183, calls inlined = 137, statements flattened = 11745 [2021-12-18 15:17:19,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 15:17:19,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 15:17:19,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 15:17:19,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 15:17:19,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:17:18" (1/1) ... [2021-12-18 15:17:19,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:17:18" (1/1) ... [2021-12-18 15:17:19,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:17:18" (1/1) ... [2021-12-18 15:17:19,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:17:18" (1/1) ... [2021-12-18 15:17:19,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:17:18" (1/1) ... [2021-12-18 15:17:19,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:17:18" (1/1) ... [2021-12-18 15:17:19,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:17:18" (1/1) ... [2021-12-18 15:17:19,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 15:17:19,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 15:17:19,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 15:17:19,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 15:17:19,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:17:18" (1/1) ... [2021-12-18 15:17:19,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 15:17:19,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 15:17:19,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 15:17:19,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 15:17:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-12-18 15:17:19,623 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-12-18 15:17:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-18 15:17:19,623 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-18 15:17:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-18 15:17:19,624 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-18 15:17:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 15:17:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 15:17:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-18 15:17:19,624 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-18 15:17:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_recv_bulk_msg [2021-12-18 15:17:19,624 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_recv_bulk_msg [2021-12-18 15:17:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 15:17:19,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 15:17:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_save_screen [2021-12-18 15:17:19,625 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_save_screen [2021-12-18 15:17:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_free_buffers [2021-12-18 15:17:19,625 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_free_buffers [2021-12-18 15:17:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_disconnect [2021-12-18 15:17:19,625 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_disconnect [2021-12-18 15:17:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_deinit [2021-12-18 15:17:19,626 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_deinit [2021-12-18 15:17:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_memio_byte [2021-12-18 15:17:19,626 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_memio_byte [2021-12-18 15:17:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 15:17:19,626 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 15:17:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-18 15:17:19,627 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-18 15:17:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 15:17:19,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 15:17:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_set_cursor [2021-12-18 15:17:19,627 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_set_cursor [2021-12-18 15:17:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2021-12-18 15:17:19,627 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2021-12-18 15:17:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-18 15:17:19,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-18 15:17:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_memio_word [2021-12-18 15:17:19,628 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_memio_word [2021-12-18 15:17:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-18 15:17:19,628 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-18 15:17:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetReg [2021-12-18 15:17:19,629 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetReg [2021-12-18 15:17:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-18 15:17:19,629 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-18 15:17:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_get_sisusb_lock_and_check [2021-12-18 15:17:19,629 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_get_sisusb_lock_and_check [2021-12-18 15:17:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 15:17:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure take_over_console [2021-12-18 15:17:19,630 INFO L138 BoogieDeclarations]: Found implementation of procedure take_over_console [2021-12-18 15:17:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_sisusb_valid [2021-12-18 15:17:19,630 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_sisusb_valid [2021-12-18 15:17:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 15:17:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegOR [2021-12-18 15:17:19,630 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegOR [2021-12-18 15:17:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_sisusb_usb_data [2021-12-18 15:17:19,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_sisusb_usb_data [2021-12-18 15:17:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-18 15:17:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_check_rbc [2021-12-18 15:17:19,632 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_check_rbc [2021-12-18 15:17:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 15:17:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 15:17:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-18 15:17:19,633 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-18 15:17:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_outurb_available [2021-12-18 15:17:19,633 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_outurb_available [2021-12-18 15:17:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_kill_all_busy [2021-12-18 15:17:19,633 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_kill_all_busy [2021-12-18 15:17:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-18 15:17:19,633 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-18 15:17:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-18 15:17:19,634 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-18 15:17:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_getidxreg [2021-12-18 15:17:19,634 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_getidxreg [2021-12-18 15:17:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-18 15:17:19,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-18 15:17:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-18 15:17:19,635 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-18 15:17:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_writeb [2021-12-18 15:17:19,635 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_writeb [2021-12-18 15:17:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 15:17:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-18 15:17:19,635 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-18 15:17:19,636 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_set_default_mode [2021-12-18 15:17:19,636 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_set_default_mode [2021-12-18 15:17:19,636 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_memio_byte [2021-12-18 15:17:19,636 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_memio_byte [2021-12-18 15:17:19,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 15:17:19,636 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_DisplayOn [2021-12-18 15:17:19,636 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_DisplayOn [2021-12-18 15:17:19,637 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxregandor [2021-12-18 15:17:19,637 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxregandor [2021-12-18 15:17:19,637 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_mem_bulk [2021-12-18 15:17:19,637 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_mem_bulk [2021-12-18 15:17:19,637 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-12-18 15:17:19,637 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-12-18 15:17:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbdummycon_init [2021-12-18 15:17:19,638 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbdummycon_init [2021-12-18 15:17:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2021-12-18 15:17:19,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2021-12-18 15:17:19,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 15:17:19,639 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_GetReg [2021-12-18 15:17:19,639 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_GetReg [2021-12-18 15:17:19,639 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_do_font_op [2021-12-18 15:17:19,640 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_do_font_op [2021-12-18 15:17:19,640 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_init_gfxdevice [2021-12-18 15:17:19,640 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_init_gfxdevice [2021-12-18 15:17:19,640 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegByte [2021-12-18 15:17:19,640 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegByte [2021-12-18 15:17:19,640 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_free_urbs [2021-12-18 15:17:19,640 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_free_urbs [2021-12-18 15:17:19,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-18 15:17:19,640 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-18 15:17:19,641 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_send_bridge_packet [2021-12-18 15:17:19,641 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_send_bridge_packet [2021-12-18 15:17:19,641 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-18 15:17:19,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-18 15:17:19,641 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-18 15:17:19,642 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-18 15:17:19,642 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_ioctl [2021-12-18 15:17:19,644 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_ioctl [2021-12-18 15:17:19,644 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_memio_word [2021-12-18 15:17:19,644 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_memio_word [2021-12-18 15:17:19,644 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_get_sisusb [2021-12-18 15:17:19,645 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_get_sisusb [2021-12-18 15:17:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 15:17:19,646 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 15:17:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_cursor [2021-12-18 15:17:19,646 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_cursor [2021-12-18 15:17:19,650 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_is_inactive [2021-12-18 15:17:19,650 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_is_inactive [2021-12-18 15:17:19,650 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-12-18 15:17:19,650 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-12-18 15:17:19,651 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_clear_vram [2021-12-18 15:17:19,651 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_clear_vram [2021-12-18 15:17:19,651 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_pci_config [2021-12-18 15:17:19,651 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_pci_config [2021-12-18 15:17:19,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 15:17:19,651 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-18 15:17:19,651 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-18 15:17:19,651 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_send_bulk_msg [2021-12-18 15:17:19,652 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_send_bulk_msg [2021-12-18 15:17:19,652 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-18 15:17:19,652 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-18 15:17:19,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 15:17:19,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 15:17:19,652 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_readb [2021-12-18 15:17:19,652 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_readb [2021-12-18 15:17:19,653 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxregor [2021-12-18 15:17:19,653 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxregor [2021-12-18 15:17:19,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 15:17:19,653 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2021-12-18 15:17:19,653 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2021-12-18 15:17:19,653 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-18 15:17:19,653 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-18 15:17:19,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 15:17:19,653 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_send_packet [2021-12-18 15:17:19,654 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_send_packet [2021-12-18 15:17:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_memio_long [2021-12-18 15:17:19,654 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_memio_long [2021-12-18 15:17:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_reset_text_mode [2021-12-18 15:17:19,654 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_reset_text_mode [2021-12-18 15:17:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure SiSUSB_InitPtr [2021-12-18 15:17:19,654 INFO L138 BoogieDeclarations]: Found implementation of procedure SiSUSB_InitPtr [2021-12-18 15:17:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 15:17:19,654 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_pci_config [2021-12-18 15:17:19,655 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_pci_config [2021-12-18 15:17:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-18 15:17:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxreg [2021-12-18 15:17:19,655 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxreg [2021-12-18 15:17:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegANDOR [2021-12-18 15:17:19,655 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegANDOR [2021-12-18 15:17:19,655 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 15:17:19,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 15:17:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_wait_all_out_complete [2021-12-18 15:17:19,656 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_wait_all_out_complete [2021-12-18 15:17:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-18 15:17:19,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-18 15:17:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegAND [2021-12-18 15:17:19,656 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegAND [2021-12-18 15:17:19,656 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxregand [2021-12-18 15:17:19,657 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxregand [2021-12-18 15:17:19,657 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-18 15:17:19,657 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-18 15:17:19,657 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetSegmentReg [2021-12-18 15:17:19,657 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetSegmentReg [2021-12-18 15:17:19,657 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_copy_memory [2021-12-18 15:17:19,657 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_copy_memory [2021-12-18 15:17:19,657 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setreg [2021-12-18 15:17:19,657 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setreg [2021-12-18 15:17:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_sisusb_usb_data [2021-12-18 15:17:19,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_sisusb_usb_data [2021-12-18 15:17:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_set_start_address [2021-12-18 15:17:19,658 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_set_start_address [2021-12-18 15:17:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-18 15:17:19,658 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-18 15:17:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-18 15:17:19,658 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-18 15:17:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_WriteDAC [2021-12-18 15:17:19,659 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_WriteDAC [2021-12-18 15:17:19,659 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_mem_bulk [2021-12-18 15:17:19,659 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_mem_bulk [2021-12-18 15:17:19,659 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_getreg [2021-12-18 15:17:19,659 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_getreg [2021-12-18 15:17:19,659 INFO L130 BoogieDeclarations]: Found specification of procedure SiSUSBSetMode [2021-12-18 15:17:19,659 INFO L138 BoogieDeclarations]: Found implementation of procedure SiSUSBSetMode [2021-12-18 15:17:19,659 INFO L130 BoogieDeclarations]: Found specification of procedure vc_resize [2021-12-18 15:17:19,659 INFO L138 BoogieDeclarations]: Found implementation of procedure vc_resize [2021-12-18 15:17:19,660 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_init [2021-12-18 15:17:19,660 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_init [2021-12-18 15:17:19,660 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-12-18 15:17:19,660 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-12-18 15:17:19,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 15:17:19,660 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_memio_long [2021-12-18 15:17:19,660 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_memio_long [2021-12-18 15:17:19,660 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_GetRegByte [2021-12-18 15:17:19,660 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_GetRegByte [2021-12-18 15:17:19,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-12-18 15:17:19,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-12-18 15:17:19,661 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_triggersr16 [2021-12-18 15:17:19,661 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_triggersr16 [2021-12-18 15:17:19,661 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-18 15:17:19,661 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-18 15:17:19,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 15:17:19,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 15:17:19,661 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_all_free [2021-12-18 15:17:19,662 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_all_free [2021-12-18 15:17:20,385 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 15:17:20,387 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 15:17:43,531 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 15:17:43,553 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 15:17:43,553 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 15:17:43,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:17:43 BoogieIcfgContainer [2021-12-18 15:17:43,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 15:17:43,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 15:17:43,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 15:17:43,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 15:17:43,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 03:17:16" (1/3) ... [2021-12-18 15:17:43,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bba87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:17:43, skipping insertion in model container [2021-12-18 15:17:43,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:17:18" (2/3) ... [2021-12-18 15:17:43,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bba87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:17:43, skipping insertion in model container [2021-12-18 15:17:43,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:17:43" (3/3) ... [2021-12-18 15:17:43,566 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 [2021-12-18 15:17:43,571 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 15:17:43,572 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 15:17:43,621 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 15:17:43,628 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 15:17:43,630 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 15:17:43,680 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) [2021-12-18 15:17:43,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-18 15:17:43,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:17:43,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 15:17:43,685 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:17:43,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:17:43,689 INFO L85 PathProgramCache]: Analyzing trace with hash -674524315, now seen corresponding path program 1 times [2021-12-18 15:17:43,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:17:43,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370947511] [2021-12-18 15:17:43,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:17:43,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:17:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:17:44,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:17:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:17:44,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:17:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:17:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:17:44,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:17:44,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370947511] [2021-12-18 15:17:44,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370947511] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:17:44,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:17:44,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 15:17:44,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512482581] [2021-12-18 15:17:44,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:17:44,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 15:17:44,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:17:44,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 15:17:44,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 15:17:44,513 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) [2021-12-18 15:17:52,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:17:54,863 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:18:00,270 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:18:09,510 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:18:10,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:18:10,478 INFO L93 Difference]: Finished difference Result 5637 states and 8475 transitions. [2021-12-18 15:18:10,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 15:18:10,488 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 [2021-12-18 15:18:10,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:18:10,520 INFO L225 Difference]: With dead ends: 5637 [2021-12-18 15:18:10,520 INFO L226 Difference]: Without dead ends: 2888 [2021-12-18 15:18:10,541 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 [2021-12-18 15:18:10,544 INFO L933 BasicCegarLoop]: 3528 mSDtfsCounter, 1936 mSDsluCounter, 2074 mSDsCounter, 0 mSdLazyCounter, 3605 mSolverCounterSat, 806 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s 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, 25.2s IncrementalHoareTripleChecker+Time [2021-12-18 15:18:10,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2500 Valid, 5602 Invalid, 4415 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [806 Valid, 3605 Invalid, 4 Unknown, 0 Unchecked, 25.2s Time] [2021-12-18 15:18:10,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2021-12-18 15:18:10,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2746. [2021-12-18 15:18:10,723 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) [2021-12-18 15:18:10,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2746 states to 2746 states and 4072 transitions. [2021-12-18 15:18:10,743 INFO L78 Accepts]: Start accepts. Automaton has 2746 states and 4072 transitions. Word has length 19 [2021-12-18 15:18:10,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:18:10,744 INFO L470 AbstractCegarLoop]: Abstraction has 2746 states and 4072 transitions. [2021-12-18 15:18:10,744 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) [2021-12-18 15:18:10,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2746 states and 4072 transitions. [2021-12-18 15:18:10,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-18 15:18:10,745 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:18:10,745 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] [2021-12-18 15:18:10,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 15:18:10,746 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:18:10,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:18:10,746 INFO L85 PathProgramCache]: Analyzing trace with hash -34172631, now seen corresponding path program 1 times [2021-12-18 15:18:10,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:18:10,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950296119] [2021-12-18 15:18:10,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:18:10,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:18:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:11,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:18:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:11,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:18:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:11,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:18:11,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:18:11,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950296119] [2021-12-18 15:18:11,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950296119] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 15:18:11,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257391495] [2021-12-18 15:18:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:18:11,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 15:18:11,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 15:18:11,193 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 15:18:11,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 15:18:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:12,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 8402 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 15:18:12,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 15:18:12,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 15:18:12,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 15:18:12,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257391495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:18:12,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 15:18:12,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-12-18 15:18:12,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756540220] [2021-12-18 15:18:12,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:18:12,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 15:18:12,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:18:12,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 15:18:12,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-18 15:18:12,684 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) [2021-12-18 15:18:12,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:18:12,948 INFO L93 Difference]: Finished difference Result 2748 states and 4073 transitions. [2021-12-18 15:18:12,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 15:18:12,951 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 [2021-12-18 15:18:12,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:18:12,964 INFO L225 Difference]: With dead ends: 2748 [2021-12-18 15:18:12,964 INFO L226 Difference]: Without dead ends: 2745 [2021-12-18 15:18:12,965 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 [2021-12-18 15:18:12,969 INFO L933 BasicCegarLoop]: 4068 mSDtfsCounter, 4051 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 15:18:12,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4051 Valid, 4070 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 15:18:12,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2021-12-18 15:18:13,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2745. [2021-12-18 15:18:13,050 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) [2021-12-18 15:18:13,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 4070 transitions. [2021-12-18 15:18:13,069 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 4070 transitions. Word has length 21 [2021-12-18 15:18:13,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:18:13,069 INFO L470 AbstractCegarLoop]: Abstraction has 2745 states and 4070 transitions. [2021-12-18 15:18:13,069 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) [2021-12-18 15:18:13,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 4070 transitions. [2021-12-18 15:18:13,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-18 15:18:13,070 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:18:13,070 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] [2021-12-18 15:18:13,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-18 15:18:13,283 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 [2021-12-18 15:18:13,283 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:18:13,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:18:13,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1061720298, now seen corresponding path program 1 times [2021-12-18 15:18:13,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:18:13,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446260474] [2021-12-18 15:18:13,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:18:13,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:18:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:13,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:18:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:13,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:18:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:13,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:18:13,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:18:13,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446260474] [2021-12-18 15:18:13,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446260474] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 15:18:13,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953791068] [2021-12-18 15:18:13,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:18:13,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 15:18:13,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 15:18:13,662 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 15:18:13,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 15:18:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:14,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 8404 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 15:18:14,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 15:18:15,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 15:18:15,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 15:18:15,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953791068] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:18:15,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 15:18:15,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-12-18 15:18:15,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482965610] [2021-12-18 15:18:15,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:18:15,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 15:18:15,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:18:15,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 15:18:15,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-18 15:18:15,149 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) [2021-12-18 15:18:15,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:18:15,440 INFO L93 Difference]: Finished difference Result 7212 states and 10689 transitions. [2021-12-18 15:18:15,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 15:18:15,441 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 [2021-12-18 15:18:15,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:18:15,468 INFO L225 Difference]: With dead ends: 7212 [2021-12-18 15:18:15,468 INFO L226 Difference]: Without dead ends: 4482 [2021-12-18 15:18:15,486 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 [2021-12-18 15:18:15,492 INFO L933 BasicCegarLoop]: 6168 mSDtfsCounter, 2758 mSDsluCounter, 3815 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 15:18:15,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2758 Valid, 9983 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 15:18:15,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4482 states. [2021-12-18 15:18:15,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4482 to 4479. [2021-12-18 15:18:15,669 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) [2021-12-18 15:18:15,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4479 states to 4479 states and 6597 transitions. [2021-12-18 15:18:15,690 INFO L78 Accepts]: Start accepts. Automaton has 4479 states and 6597 transitions. Word has length 22 [2021-12-18 15:18:15,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:18:15,692 INFO L470 AbstractCegarLoop]: Abstraction has 4479 states and 6597 transitions. [2021-12-18 15:18:15,692 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) [2021-12-18 15:18:15,692 INFO L276 IsEmpty]: Start isEmpty. Operand 4479 states and 6597 transitions. [2021-12-18 15:18:15,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-18 15:18:15,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:18:15,693 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] [2021-12-18 15:18:15,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 15:18:15,906 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 [2021-12-18 15:18:15,907 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:18:15,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:18:15,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1444045260, now seen corresponding path program 1 times [2021-12-18 15:18:15,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:18:15,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079833462] [2021-12-18 15:18:15,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:18:15,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:18:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:16,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:18:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:16,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:18:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:18:16,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:18:16,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079833462] [2021-12-18 15:18:16,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079833462] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 15:18:16,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194734289] [2021-12-18 15:18:16,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:18:16,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 15:18:16,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 15:18:16,309 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 15:18:16,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 15:18:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:17,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 8406 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 15:18:17,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 15:18:17,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 15:18:17,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 15:18:17,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194734289] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:18:17,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 15:18:17,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-12-18 15:18:17,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897307844] [2021-12-18 15:18:17,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:18:17,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 15:18:17,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:18:17,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 15:18:17,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-18 15:18:17,905 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) [2021-12-18 15:18:18,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:18:18,125 INFO L93 Difference]: Finished difference Result 4481 states and 6598 transitions. [2021-12-18 15:18:18,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 15:18:18,141 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 [2021-12-18 15:18:18,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:18:18,166 INFO L225 Difference]: With dead ends: 4481 [2021-12-18 15:18:18,166 INFO L226 Difference]: Without dead ends: 4470 [2021-12-18 15:18:18,171 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 [2021-12-18 15:18:18,173 INFO L933 BasicCegarLoop]: 4067 mSDtfsCounter, 4047 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 15:18:18,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4047 Valid, 4069 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 15:18:18,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states. [2021-12-18 15:18:18,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 4470. [2021-12-18 15:18:18,347 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) [2021-12-18 15:18:18,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4470 states to 4470 states and 6580 transitions. [2021-12-18 15:18:18,369 INFO L78 Accepts]: Start accepts. Automaton has 4470 states and 6580 transitions. Word has length 23 [2021-12-18 15:18:18,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:18:18,370 INFO L470 AbstractCegarLoop]: Abstraction has 4470 states and 6580 transitions. [2021-12-18 15:18:18,370 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) [2021-12-18 15:18:18,370 INFO L276 IsEmpty]: Start isEmpty. Operand 4470 states and 6580 transitions. [2021-12-18 15:18:18,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-18 15:18:18,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:18:18,377 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] [2021-12-18 15:18:18,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 15:18:18,583 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 [2021-12-18 15:18:18,584 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:18:18,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:18:18,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1942876578, now seen corresponding path program 1 times [2021-12-18 15:18:18,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:18:18,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961632019] [2021-12-18 15:18:18,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:18:18,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:18:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:18,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:18:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:18,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:18:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:18,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 15:18:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:19,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 15:18:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:19,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 15:18:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 15:18:19,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:18:19,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961632019] [2021-12-18 15:18:19,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961632019] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 15:18:19,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633638270] [2021-12-18 15:18:19,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:18:19,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 15:18:19,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 15:18:19,031 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) [2021-12-18 15:18:19,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 15:18:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:20,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 8586 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 15:18:20,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 15:18:20,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 15:18:20,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 15:18:20,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633638270] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:18:20,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 15:18:20,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-18 15:18:20,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609712369] [2021-12-18 15:18:20,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:18:20,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 15:18:20,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:18:20,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 15:18:20,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 15:18:20,594 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) [2021-12-18 15:18:20,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:18:20,810 INFO L93 Difference]: Finished difference Result 9189 states and 13570 transitions. [2021-12-18 15:18:20,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 15:18:20,811 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 [2021-12-18 15:18:20,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:18:20,838 INFO L225 Difference]: With dead ends: 9189 [2021-12-18 15:18:20,839 INFO L226 Difference]: Without dead ends: 4734 [2021-12-18 15:18:20,862 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 [2021-12-18 15:18:20,863 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 [2021-12-18 15:18:20,863 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] [2021-12-18 15:18:20,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4734 states. [2021-12-18 15:18:21,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4734 to 4707. [2021-12-18 15:18:21,093 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) [2021-12-18 15:18:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4707 states to 4707 states and 6960 transitions. [2021-12-18 15:18:21,114 INFO L78 Accepts]: Start accepts. Automaton has 4707 states and 6960 transitions. Word has length 48 [2021-12-18 15:18:21,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:18:21,114 INFO L470 AbstractCegarLoop]: Abstraction has 4707 states and 6960 transitions. [2021-12-18 15:18:21,114 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) [2021-12-18 15:18:21,115 INFO L276 IsEmpty]: Start isEmpty. Operand 4707 states and 6960 transitions. [2021-12-18 15:18:21,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-18 15:18:21,117 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:18:21,117 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] [2021-12-18 15:18:21,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-18 15:18:21,339 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 [2021-12-18 15:18:21,339 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:18:21,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:18:21,340 INFO L85 PathProgramCache]: Analyzing trace with hash -818070145, now seen corresponding path program 1 times [2021-12-18 15:18:21,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:18:21,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262779117] [2021-12-18 15:18:21,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:18:21,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:18:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:21,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:18:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:21,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:18:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:21,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 15:18:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:21,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 15:18:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:21,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 15:18:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:21,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 15:18:21,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:18:21,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262779117] [2021-12-18 15:18:21,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262779117] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 15:18:21,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463955998] [2021-12-18 15:18:21,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:18:21,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 15:18:21,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 15:18:21,780 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) [2021-12-18 15:18:21,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 15:18:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:23,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 8560 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 15:18:23,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 15:18:23,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 15:18:23,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 15:18:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 15:18:23,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463955998] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 15:18:23,464 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 15:18:23,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2021-12-18 15:18:23,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607221020] [2021-12-18 15:18:23,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 15:18:23,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 15:18:23,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:18:23,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 15:18:23,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-12-18 15:18:23,465 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) [2021-12-18 15:18:26,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:18:31,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:18:37,344 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:18:41,364 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:18:48,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:18:49,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:18:49,264 INFO L93 Difference]: Finished difference Result 9608 states and 14235 transitions. [2021-12-18 15:18:49,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 15:18:49,265 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 [2021-12-18 15:18:49,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:18:49,291 INFO L225 Difference]: With dead ends: 9608 [2021-12-18 15:18:49,292 INFO L226 Difference]: Without dead ends: 4912 [2021-12-18 15:18:49,307 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 [2021-12-18 15:18:49,308 INFO L933 BasicCegarLoop]: 3513 mSDtfsCounter, 3866 mSDsluCounter, 2366 mSDsCounter, 0 mSdLazyCounter, 3287 mSolverCounterSat, 2180 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4430 SdHoareTripleChecker+Valid, 5879 SdHoareTripleChecker+Invalid, 5472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2180 IncrementalHoareTripleChecker+Valid, 3287 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2021-12-18 15:18:49,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4430 Valid, 5879 Invalid, 5472 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2180 Valid, 3287 Invalid, 5 Unknown, 0 Unchecked, 25.2s Time] [2021-12-18 15:18:49,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4912 states. [2021-12-18 15:18:49,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4912 to 4772. [2021-12-18 15:18:49,448 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) [2021-12-18 15:18:49,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4772 states to 4772 states and 7064 transitions. [2021-12-18 15:18:49,466 INFO L78 Accepts]: Start accepts. Automaton has 4772 states and 7064 transitions. Word has length 54 [2021-12-18 15:18:49,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:18:49,467 INFO L470 AbstractCegarLoop]: Abstraction has 4772 states and 7064 transitions. [2021-12-18 15:18:49,467 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) [2021-12-18 15:18:49,467 INFO L276 IsEmpty]: Start isEmpty. Operand 4772 states and 7064 transitions. [2021-12-18 15:18:49,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-18 15:18:49,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:18:49,468 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] [2021-12-18 15:18:49,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-18 15:18:49,683 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 [2021-12-18 15:18:49,683 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:18:49,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:18:49,684 INFO L85 PathProgramCache]: Analyzing trace with hash 10363827, now seen corresponding path program 2 times [2021-12-18 15:18:49,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:18:49,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140823694] [2021-12-18 15:18:49,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:18:49,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:18:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:50,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:18:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:50,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:18:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:50,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 15:18:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:50,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 15:18:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:50,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 15:18:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:18:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-18 15:18:50,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:18:50,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140823694] [2021-12-18 15:18:50,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140823694] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:18:50,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:18:50,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 15:18:50,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002065006] [2021-12-18 15:18:50,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:18:50,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 15:18:50,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:18:50,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 15:18:50,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 15:18:50,139 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) [2021-12-18 15:18:55,594 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:19:01,973 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:19:13,014 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:19:14,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:19:14,357 INFO L93 Difference]: Finished difference Result 9660 states and 14341 transitions. [2021-12-18 15:19:14,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 15:19:14,357 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 [2021-12-18 15:19:14,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:19:14,380 INFO L225 Difference]: With dead ends: 9660 [2021-12-18 15:19:14,380 INFO L226 Difference]: Without dead ends: 4909 [2021-12-18 15:19:14,393 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 [2021-12-18 15:19:14,394 INFO L933 BasicCegarLoop]: 3795 mSDtfsCounter, 8924 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 3729 mSolverCounterSat, 5147 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9460 SdHoareTripleChecker+Valid, 5207 SdHoareTripleChecker+Invalid, 8879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5147 IncrementalHoareTripleChecker+Valid, 3729 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2021-12-18 15:19:14,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9460 Valid, 5207 Invalid, 8879 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5147 Valid, 3729 Invalid, 3 Unknown, 0 Unchecked, 23.6s Time] [2021-12-18 15:19:14,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4909 states. [2021-12-18 15:19:14,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4909 to 4750. [2021-12-18 15:19:14,519 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) [2021-12-18 15:19:14,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4750 states to 4750 states and 7001 transitions. [2021-12-18 15:19:14,536 INFO L78 Accepts]: Start accepts. Automaton has 4750 states and 7001 transitions. Word has length 60 [2021-12-18 15:19:14,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:19:14,537 INFO L470 AbstractCegarLoop]: Abstraction has 4750 states and 7001 transitions. [2021-12-18 15:19:14,537 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) [2021-12-18 15:19:14,537 INFO L276 IsEmpty]: Start isEmpty. Operand 4750 states and 7001 transitions. [2021-12-18 15:19:14,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-18 15:19:14,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:19:14,545 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] [2021-12-18 15:19:14,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 15:19:14,546 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:19:14,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:19:14,546 INFO L85 PathProgramCache]: Analyzing trace with hash -736614488, now seen corresponding path program 1 times [2021-12-18 15:19:14,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:19:14,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770990143] [2021-12-18 15:19:14,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:19:14,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:19:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:14,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:19:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:14,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:19:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:14,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 15:19:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:14,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 15:19:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:14,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 15:19:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:14,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 15:19:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:15,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-18 15:19:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:15,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 15:19:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:15,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 15:19:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:15,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 15:19:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:15,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-18 15:19:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:15,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 15:19:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:15,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 15:19:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:15,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 15:19:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:19:15,057 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-18 15:19:15,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:19:15,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770990143] [2021-12-18 15:19:15,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770990143] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:19:15,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:19:15,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 15:19:15,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894274941] [2021-12-18 15:19:15,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:19:15,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 15:19:15,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:19:15,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 15:19:15,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-18 15:19:15,060 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) [2021-12-18 15:19:18,195 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:19:27,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:19:29,604 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:19:31,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:19:39,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:19:48,606 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:19:51,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:20:02,833 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:20:04,837 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:20:06,892 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:20:08,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:20:08,677 INFO L93 Difference]: Finished difference Result 9799 states and 14506 transitions. [2021-12-18 15:20:08,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 15:20:08,678 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 [2021-12-18 15:20:08,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:20:08,696 INFO L225 Difference]: With dead ends: 9799 [2021-12-18 15:20:08,696 INFO L226 Difference]: Without dead ends: 5064 [2021-12-18 15:20:08,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-18 15:20:08,709 INFO L933 BasicCegarLoop]: 3473 mSDtfsCounter, 4319 mSDsluCounter, 4638 mSDsCounter, 0 mSdLazyCounter, 8128 mSolverCounterSat, 3192 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4838 SdHoareTripleChecker+Valid, 8111 SdHoareTripleChecker+Invalid, 11330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3192 IncrementalHoareTripleChecker+Valid, 8128 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.9s IncrementalHoareTripleChecker+Time [2021-12-18 15:20:08,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4838 Valid, 8111 Invalid, 11330 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3192 Valid, 8128 Invalid, 10 Unknown, 0 Unchecked, 52.9s Time] [2021-12-18 15:20:08,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5064 states. [2021-12-18 15:20:08,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5064 to 4747. [2021-12-18 15:20:08,839 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) [2021-12-18 15:20:08,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4747 states to 4747 states and 6992 transitions. [2021-12-18 15:20:08,856 INFO L78 Accepts]: Start accepts. Automaton has 4747 states and 6992 transitions. Word has length 132 [2021-12-18 15:20:08,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:20:08,856 INFO L470 AbstractCegarLoop]: Abstraction has 4747 states and 6992 transitions. [2021-12-18 15:20:08,857 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) [2021-12-18 15:20:08,857 INFO L276 IsEmpty]: Start isEmpty. Operand 4747 states and 6992 transitions. [2021-12-18 15:20:08,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-18 15:20:08,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:20:08,867 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] [2021-12-18 15:20:08,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 15:20:08,868 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:20:08,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:20:08,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1810525957, now seen corresponding path program 1 times [2021-12-18 15:20:08,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:20:08,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597880964] [2021-12-18 15:20:08,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:20:08,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:20:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:09,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:20:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:09,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:20:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:09,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 15:20:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:09,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 15:20:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:09,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:20:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:09,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 15:20:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:09,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-18 15:20:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:09,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 15:20:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:09,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-18 15:20:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:09,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 15:20:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:09,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 15:20:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:09,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:20:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:09,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 15:20:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:09,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 15:20:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:09,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 15:20:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:09,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 15:20:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:09,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-18 15:20:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:09,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 15:20:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:09,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 15:20:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:09,376 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-18 15:20:09,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:20:09,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597880964] [2021-12-18 15:20:09,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597880964] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:20:09,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:20:09,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 15:20:09,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833809264] [2021-12-18 15:20:09,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:20:09,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 15:20:09,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:20:09,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 15:20:09,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 15:20:09,379 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) [2021-12-18 15:20:13,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:20:21,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:20:23,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:20:30,637 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:20:39,325 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:20:41,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:20:51,432 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:20:53,510 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:20:54,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:20:54,835 INFO L93 Difference]: Finished difference Result 10284 states and 15303 transitions. [2021-12-18 15:20:54,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 15:20:54,836 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 [2021-12-18 15:20:54,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:20:54,856 INFO L225 Difference]: With dead ends: 10284 [2021-12-18 15:20:54,857 INFO L226 Difference]: Without dead ends: 5558 [2021-12-18 15:20:54,870 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 [2021-12-18 15:20:54,871 INFO L933 BasicCegarLoop]: 3641 mSDtfsCounter, 3266 mSDsluCounter, 3854 mSDsCounter, 0 mSdLazyCounter, 6562 mSolverCounterSat, 2856 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3917 SdHoareTripleChecker+Valid, 7495 SdHoareTripleChecker+Invalid, 9426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2856 IncrementalHoareTripleChecker+Valid, 6562 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.7s IncrementalHoareTripleChecker+Time [2021-12-18 15:20:54,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3917 Valid, 7495 Invalid, 9426 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2856 Valid, 6562 Invalid, 8 Unknown, 0 Unchecked, 44.7s Time] [2021-12-18 15:20:54,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2021-12-18 15:20:55,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 5153. [2021-12-18 15:20:55,012 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) [2021-12-18 15:20:55,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 7660 transitions. [2021-12-18 15:20:55,031 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 7660 transitions. Word has length 162 [2021-12-18 15:20:55,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:20:55,031 INFO L470 AbstractCegarLoop]: Abstraction has 5153 states and 7660 transitions. [2021-12-18 15:20:55,031 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) [2021-12-18 15:20:55,031 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 7660 transitions. [2021-12-18 15:20:55,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-18 15:20:55,040 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:20:55,040 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] [2021-12-18 15:20:55,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 15:20:55,041 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:20:55,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:20:55,041 INFO L85 PathProgramCache]: Analyzing trace with hash 287156355, now seen corresponding path program 1 times [2021-12-18 15:20:55,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:20:55,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494913388] [2021-12-18 15:20:55,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:20:55,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:20:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:55,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:20:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:55,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:20:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:55,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 15:20:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:55,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 15:20:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:55,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 15:20:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:55,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 15:20:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:55,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:20:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:55,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:20:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:55,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:20:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:55,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-18 15:20:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:55,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:20:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:55,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-18 15:20:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:55,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 15:20:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:55,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:20:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:55,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 15:20:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:55,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 15:20:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:55,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 15:20:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:55,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 15:20:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:20:55,782 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-18 15:20:55,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:20:55,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494913388] [2021-12-18 15:20:55,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494913388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:20:55,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:20:55,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 15:20:55,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602740311] [2021-12-18 15:20:55,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:20:55,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 15:20:55,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:20:55,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 15:20:55,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-18 15:20:55,784 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) [2021-12-18 15:20:59,495 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:21:00,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:21:02,251 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:21:05,456 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:21:18,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:21:28,363 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:21:54,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:21:56,988 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:21:59,031 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:22:01,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:22:03,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:22:03,712 INFO L93 Difference]: Finished difference Result 10755 states and 16080 transitions. [2021-12-18 15:22:03,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 15:22:03,712 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 [2021-12-18 15:22:03,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:22:03,737 INFO L225 Difference]: With dead ends: 10755 [2021-12-18 15:22:03,738 INFO L226 Difference]: Without dead ends: 5623 [2021-12-18 15:22:03,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-12-18 15:22:03,759 INFO L933 BasicCegarLoop]: 3357 mSDtfsCounter, 4884 mSDsluCounter, 3923 mSDsCounter, 0 mSdLazyCounter, 10777 mSolverCounterSat, 4222 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5406 SdHoareTripleChecker+Valid, 7280 SdHoareTripleChecker+Invalid, 15006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4222 IncrementalHoareTripleChecker+Valid, 10777 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.9s IncrementalHoareTripleChecker+Time [2021-12-18 15:22:03,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5406 Valid, 7280 Invalid, 15006 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4222 Valid, 10777 Invalid, 7 Unknown, 0 Unchecked, 66.9s Time] [2021-12-18 15:22:03,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5623 states. [2021-12-18 15:22:03,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5623 to 5156. [2021-12-18 15:22:03,998 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) [2021-12-18 15:22:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5156 states to 5156 states and 7665 transitions. [2021-12-18 15:22:04,018 INFO L78 Accepts]: Start accepts. Automaton has 5156 states and 7665 transitions. Word has length 164 [2021-12-18 15:22:04,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:22:04,018 INFO L470 AbstractCegarLoop]: Abstraction has 5156 states and 7665 transitions. [2021-12-18 15:22:04,018 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) [2021-12-18 15:22:04,018 INFO L276 IsEmpty]: Start isEmpty. Operand 5156 states and 7665 transitions. [2021-12-18 15:22:04,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-12-18 15:22:04,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:22:04,029 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] [2021-12-18 15:22:04,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 15:22:04,030 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:22:04,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:22:04,031 INFO L85 PathProgramCache]: Analyzing trace with hash 510318449, now seen corresponding path program 1 times [2021-12-18 15:22:04,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:22:04,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567311898] [2021-12-18 15:22:04,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:22:04,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:22:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:22:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:22:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 15:22:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:22:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 15:22:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:22:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 15:22:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:22:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 15:22:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:22:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 15:22:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 15:22:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 15:22:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 15:22:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 15:22:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:22:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-18 15:22:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 15:22:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:22:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-18 15:22:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 15:22:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 15:22:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 15:22:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:22:04,830 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-12-18 15:22:04,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:22:04,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567311898] [2021-12-18 15:22:04,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567311898] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:22:04,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:22:04,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 15:22:04,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591298481] [2021-12-18 15:22:04,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:22:04,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 15:22:04,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:22:04,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 15:22:04,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-18 15:22:04,834 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) [2021-12-18 15:22:12,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:22:25,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:22:26,735 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:22:37,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:23:05,393 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:23:07,427 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:23:09,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:23:11,576 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:23:13,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:23:16,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:23:16,112 INFO L93 Difference]: Finished difference Result 11863 states and 17958 transitions. [2021-12-18 15:23:16,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 15:23:16,112 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 [2021-12-18 15:23:16,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:23:16,138 INFO L225 Difference]: With dead ends: 11863 [2021-12-18 15:23:16,138 INFO L226 Difference]: Without dead ends: 6728 [2021-12-18 15:23:16,153 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 [2021-12-18 15:23:16,154 INFO L933 BasicCegarLoop]: 3879 mSDtfsCounter, 3363 mSDsluCounter, 6038 mSDsCounter, 0 mSdLazyCounter, 12001 mSolverCounterSat, 2855 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4010 SdHoareTripleChecker+Valid, 9917 SdHoareTripleChecker+Invalid, 14864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2855 IncrementalHoareTripleChecker+Valid, 12001 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.2s IncrementalHoareTripleChecker+Time [2021-12-18 15:23:16,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4010 Valid, 9917 Invalid, 14864 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2855 Valid, 12001 Invalid, 8 Unknown, 0 Unchecked, 70.2s Time] [2021-12-18 15:23:16,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6728 states. [2021-12-18 15:23:16,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6728 to 5176. [2021-12-18 15:23:16,309 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) [2021-12-18 15:23:16,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 7693 transitions. [2021-12-18 15:23:16,327 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 7693 transitions. Word has length 203 [2021-12-18 15:23:16,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:23:16,328 INFO L470 AbstractCegarLoop]: Abstraction has 5176 states and 7693 transitions. [2021-12-18 15:23:16,328 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) [2021-12-18 15:23:16,328 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 7693 transitions. [2021-12-18 15:23:16,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-18 15:23:16,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:23:16,337 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] [2021-12-18 15:23:16,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-18 15:23:16,337 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:23:16,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:23:16,338 INFO L85 PathProgramCache]: Analyzing trace with hash 60815488, now seen corresponding path program 1 times [2021-12-18 15:23:16,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:23:16,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608302792] [2021-12-18 15:23:16,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:23:16,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:23:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:16,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:23:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:16,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:23:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:16,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 15:23:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:16,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 15:23:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:16,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 15:23:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:16,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 15:23:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:16,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:23:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:16,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:23:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:16,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:23:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:16,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 15:23:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:16,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:23:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:16,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 15:23:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:16,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 15:23:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:16,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:23:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 15:23:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 15:23:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 15:23:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 15:23:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:23:17,073 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-18 15:23:17,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:23:17,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608302792] [2021-12-18 15:23:17,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608302792] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:23:17,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:23:17,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 15:23:17,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114165886] [2021-12-18 15:23:17,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:23:17,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 15:23:17,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:23:17,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 15:23:17,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-18 15:23:17,075 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) [2021-12-18 15:23:19,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:23:24,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:23:36,787 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:23:47,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:24:13,879 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:24:15,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:24:17,921 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:24:19,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:24:22,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:24:22,663 INFO L93 Difference]: Finished difference Result 10799 states and 16146 transitions. [2021-12-18 15:24:22,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 15:24:22,664 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 [2021-12-18 15:24:22,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:24:22,690 INFO L225 Difference]: With dead ends: 10799 [2021-12-18 15:24:22,690 INFO L226 Difference]: Without dead ends: 5644 [2021-12-18 15:24:22,710 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 [2021-12-18 15:24:22,711 INFO L933 BasicCegarLoop]: 3360 mSDtfsCounter, 4884 mSDsluCounter, 3931 mSDsCounter, 0 mSdLazyCounter, 10777 mSolverCounterSat, 4218 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5406 SdHoareTripleChecker+Valid, 7291 SdHoareTripleChecker+Invalid, 15002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4218 IncrementalHoareTripleChecker+Valid, 10777 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.6s IncrementalHoareTripleChecker+Time [2021-12-18 15:24:22,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5406 Valid, 7291 Invalid, 15002 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4218 Valid, 10777 Invalid, 7 Unknown, 0 Unchecked, 64.6s Time] [2021-12-18 15:24:22,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5644 states. [2021-12-18 15:24:22,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5644 to 5177. [2021-12-18 15:24:22,948 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) [2021-12-18 15:24:22,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5177 states to 5177 states and 7694 transitions. [2021-12-18 15:24:22,967 INFO L78 Accepts]: Start accepts. Automaton has 5177 states and 7694 transitions. Word has length 169 [2021-12-18 15:24:22,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:24:22,968 INFO L470 AbstractCegarLoop]: Abstraction has 5177 states and 7694 transitions. [2021-12-18 15:24:22,968 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) [2021-12-18 15:24:22,968 INFO L276 IsEmpty]: Start isEmpty. Operand 5177 states and 7694 transitions. [2021-12-18 15:24:22,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-18 15:24:22,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:24:22,978 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] [2021-12-18 15:24:22,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 15:24:22,979 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:24:22,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:24:22,979 INFO L85 PathProgramCache]: Analyzing trace with hash 785578307, now seen corresponding path program 1 times [2021-12-18 15:24:22,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:24:22,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001694913] [2021-12-18 15:24:22,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:24:22,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:24:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:24:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:24:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 15:24:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 15:24:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 15:24:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 15:24:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:24:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:24:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:24:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-18 15:24:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:24:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-18 15:24:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 15:24:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:24:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 15:24:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 15:24:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 15:24:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 15:24:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:24:23,763 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-18 15:24:23,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:24:23,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001694913] [2021-12-18 15:24:23,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001694913] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:24:23,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:24:23,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 15:24:23,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533260759] [2021-12-18 15:24:23,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:24:23,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 15:24:23,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:24:23,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 15:24:23,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-18 15:24:23,765 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) [2021-12-18 15:24:28,390 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:24:30,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:24:33,789 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:24:46,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:24:48,239 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:24:50,352 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:24:58,833 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:25:24,457 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:25:26,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:25:28,611 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:25:31,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:25:31,024 INFO L93 Difference]: Finished difference Result 10803 states and 16150 transitions. [2021-12-18 15:25:31,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 15:25:31,024 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 [2021-12-18 15:25:31,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:25:31,044 INFO L225 Difference]: With dead ends: 10803 [2021-12-18 15:25:31,044 INFO L226 Difference]: Without dead ends: 5647 [2021-12-18 15:25:31,058 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 [2021-12-18 15:25:31,059 INFO L933 BasicCegarLoop]: 3354 mSDtfsCounter, 5325 mSDsluCounter, 4991 mSDsCounter, 0 mSdLazyCounter, 10919 mSolverCounterSat, 5098 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5847 SdHoareTripleChecker+Valid, 8345 SdHoareTripleChecker+Invalid, 16023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5098 IncrementalHoareTripleChecker+Valid, 10919 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.1s IncrementalHoareTripleChecker+Time [2021-12-18 15:25:31,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5847 Valid, 8345 Invalid, 16023 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5098 Valid, 10919 Invalid, 6 Unknown, 0 Unchecked, 66.1s Time] [2021-12-18 15:25:31,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5647 states. [2021-12-18 15:25:31,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5647 to 5179. [2021-12-18 15:25:31,208 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) [2021-12-18 15:25:31,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 7696 transitions. [2021-12-18 15:25:31,230 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 7696 transitions. Word has length 164 [2021-12-18 15:25:31,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:25:31,231 INFO L470 AbstractCegarLoop]: Abstraction has 5179 states and 7696 transitions. [2021-12-18 15:25:31,231 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) [2021-12-18 15:25:31,231 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 7696 transitions. [2021-12-18 15:25:31,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-18 15:25:31,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:25:31,241 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] [2021-12-18 15:25:31,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-18 15:25:31,241 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:25:31,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:25:31,242 INFO L85 PathProgramCache]: Analyzing trace with hash 2089767360, now seen corresponding path program 1 times [2021-12-18 15:25:31,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:25:31,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020409631] [2021-12-18 15:25:31,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:25:31,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:25:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:31,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:25:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:31,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:25:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:31,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 15:25:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:31,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 15:25:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:31,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 15:25:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:31,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 15:25:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:31,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:25:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:31,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:25:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:31,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:25:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:31,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 15:25:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:31,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:25:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:31,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 15:25:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:31,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 15:25:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:31,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:25:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:32,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 15:25:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:32,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 15:25:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:32,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 15:25:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:32,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 15:25:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:25:32,052 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-18 15:25:32,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:25:32,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020409631] [2021-12-18 15:25:32,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020409631] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:25:32,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:25:32,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 15:25:32,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271461793] [2021-12-18 15:25:32,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:25:32,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 15:25:32,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:25:32,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 15:25:32,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-18 15:25:32,054 INFO L87 Difference]: Start difference. First operand 5179 states and 7696 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) [2021-12-18 15:25:34,629 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:25:37,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:25:42,238 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:25:55,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:26:07,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:26:36,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:26:38,107 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:26:40,143 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:26:42,151 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:26:44,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:26:44,907 INFO L93 Difference]: Finished difference Result 10874 states and 16266 transitions. [2021-12-18 15:26:44,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 15:26:44,907 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 [2021-12-18 15:26:44,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:26:44,936 INFO L225 Difference]: With dead ends: 10874 [2021-12-18 15:26:44,936 INFO L226 Difference]: Without dead ends: 5716 [2021-12-18 15:26:44,954 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 [2021-12-18 15:26:44,955 INFO L933 BasicCegarLoop]: 3387 mSDtfsCounter, 2992 mSDsluCounter, 4480 mSDsCounter, 0 mSdLazyCounter, 11495 mSolverCounterSat, 2776 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3528 SdHoareTripleChecker+Valid, 7867 SdHoareTripleChecker+Invalid, 14278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2776 IncrementalHoareTripleChecker+Valid, 11495 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.8s IncrementalHoareTripleChecker+Time [2021-12-18 15:26:44,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3528 Valid, 7867 Invalid, 14278 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2776 Valid, 11495 Invalid, 7 Unknown, 0 Unchecked, 71.8s Time] [2021-12-18 15:26:44,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5716 states. [2021-12-18 15:26:45,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5716 to 5180. [2021-12-18 15:26:45,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5180 states, 3578 states have (on average 1.358859698155394) internal successors, (4862), 3645 states have internal predecessors, (4862), 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) [2021-12-18 15:26:45,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5180 states to 5180 states and 7697 transitions. [2021-12-18 15:26:45,135 INFO L78 Accepts]: Start accepts. Automaton has 5180 states and 7697 transitions. Word has length 169 [2021-12-18 15:26:45,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:26:45,136 INFO L470 AbstractCegarLoop]: Abstraction has 5180 states and 7697 transitions. [2021-12-18 15:26:45,136 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) [2021-12-18 15:26:45,136 INFO L276 IsEmpty]: Start isEmpty. Operand 5180 states and 7697 transitions. [2021-12-18 15:26:45,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-18 15:26:45,148 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:26:45,148 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] [2021-12-18 15:26:45,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-18 15:26:45,149 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:26:45,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:26:45,149 INFO L85 PathProgramCache]: Analyzing trace with hash -2050475553, now seen corresponding path program 1 times [2021-12-18 15:26:45,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:26:45,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963783682] [2021-12-18 15:26:45,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:26:45,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:26:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:45,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:26:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:45,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:26:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:45,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 15:26:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:45,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 15:26:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:45,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 15:26:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:45,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:26:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:45,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 15:26:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:45,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 15:26:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:45,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 15:26:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:45,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 15:26:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:45,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 15:26:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:45,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 15:26:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:45,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 15:26:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:45,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 15:26:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:45,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 15:26:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:45,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 15:26:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:45,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 15:26:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:45,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-18 15:26:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:45,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 15:26:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:45,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 15:26:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:26:45,674 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-18 15:26:45,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:26:45,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963783682] [2021-12-18 15:26:45,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963783682] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:26:45,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:26:45,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 15:26:45,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066625902] [2021-12-18 15:26:45,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:26:45,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 15:26:45,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:26:45,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 15:26:45,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-18 15:26:45,676 INFO L87 Difference]: Start difference. First operand 5180 states and 7697 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) [2021-12-18 15:26:49,705 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:26:57,539 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:26:59,594 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:27:07,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:27:15,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:27:26,483 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:27:28,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:27:30,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:27:30,102 INFO L93 Difference]: Finished difference Result 10653 states and 15904 transitions. [2021-12-18 15:27:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 15:27:30,102 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 [2021-12-18 15:27:30,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:27:30,125 INFO L225 Difference]: With dead ends: 10653 [2021-12-18 15:27:30,125 INFO L226 Difference]: Without dead ends: 5492 [2021-12-18 15:27:30,145 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 [2021-12-18 15:27:30,146 INFO L933 BasicCegarLoop]: 3463 mSDtfsCounter, 2404 mSDsluCounter, 3485 mSDsCounter, 0 mSdLazyCounter, 6162 mSolverCounterSat, 1771 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2923 SdHoareTripleChecker+Valid, 6948 SdHoareTripleChecker+Invalid, 7940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1771 IncrementalHoareTripleChecker+Valid, 6162 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.7s IncrementalHoareTripleChecker+Time [2021-12-18 15:27:30,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2923 Valid, 6948 Invalid, 7940 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1771 Valid, 6162 Invalid, 7 Unknown, 0 Unchecked, 43.7s Time] [2021-12-18 15:27:30,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5492 states. [2021-12-18 15:27:30,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5492 to 5180. [2021-12-18 15:27:30,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5180 states, 3578 states have (on average 1.35830072666294) internal successors, (4860), 3645 states have internal predecessors, (4860), 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) [2021-12-18 15:27:30,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5180 states to 5180 states and 7695 transitions. [2021-12-18 15:27:30,452 INFO L78 Accepts]: Start accepts. Automaton has 5180 states and 7695 transitions. Word has length 170 [2021-12-18 15:27:30,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:27:30,453 INFO L470 AbstractCegarLoop]: Abstraction has 5180 states and 7695 transitions. [2021-12-18 15:27:30,453 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) [2021-12-18 15:27:30,453 INFO L276 IsEmpty]: Start isEmpty. Operand 5180 states and 7695 transitions. [2021-12-18 15:27:30,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-18 15:27:30,462 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:27:30,462 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] [2021-12-18 15:27:30,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-18 15:27:30,463 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:27:30,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:27:30,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1932034079, now seen corresponding path program 1 times [2021-12-18 15:27:30,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:27:30,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801213881] [2021-12-18 15:27:30,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:27:30,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:27:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:30,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:27:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:30,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:27:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:30,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 15:27:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:30,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 15:27:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:30,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 15:27:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:30,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:27:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:30,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 15:27:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:30,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 15:27:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:30,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 15:27:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:30,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 15:27:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:30,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 15:27:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:30,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 15:27:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:30,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 15:27:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:30,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 15:27:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:30,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 15:27:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:30,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 15:27:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:30,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 15:27:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:30,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-18 15:27:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:30,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 15:27:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:30,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 15:27:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:27:30,986 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-18 15:27:30,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:27:30,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801213881] [2021-12-18 15:27:30,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801213881] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:27:30,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:27:30,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 15:27:30,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837706765] [2021-12-18 15:27:30,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:27:30,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 15:27:30,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:27:30,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 15:27:30,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-18 15:27:30,988 INFO L87 Difference]: Start difference. First operand 5180 states and 7695 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) [2021-12-18 15:27:34,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:27:38,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:27:45,024 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:27:47,043 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:27:49,069 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:27:50,348 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:27:58,955 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:28:20,689 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:28:22,692 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:28:24,764 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:28:26,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:28:26,733 INFO L93 Difference]: Finished difference Result 10662 states and 15912 transitions. [2021-12-18 15:28:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 15:28:26,734 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 [2021-12-18 15:28:26,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:28:26,748 INFO L225 Difference]: With dead ends: 10662 [2021-12-18 15:28:26,748 INFO L226 Difference]: Without dead ends: 5491 [2021-12-18 15:28:26,758 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 [2021-12-18 15:28:26,759 INFO L933 BasicCegarLoop]: 3468 mSDtfsCounter, 4319 mSDsluCounter, 4622 mSDsCounter, 0 mSdLazyCounter, 8125 mSolverCounterSat, 3179 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4838 SdHoareTripleChecker+Valid, 8090 SdHoareTripleChecker+Invalid, 11312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3179 IncrementalHoareTripleChecker+Valid, 8125 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.9s IncrementalHoareTripleChecker+Time [2021-12-18 15:28:26,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4838 Valid, 8090 Invalid, 11312 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3179 Valid, 8125 Invalid, 8 Unknown, 0 Unchecked, 54.9s Time] [2021-12-18 15:28:26,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5491 states. [2021-12-18 15:28:26,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5491 to 5174. [2021-12-18 15:28:26,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5174 states, 3576 states have (on average 1.3579418344519016) internal successors, (4856), 3643 states have internal predecessors, (4856), 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) [2021-12-18 15:28:26,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5174 states to 5174 states and 7683 transitions. [2021-12-18 15:28:26,924 INFO L78 Accepts]: Start accepts. Automaton has 5174 states and 7683 transitions. Word has length 170 [2021-12-18 15:28:26,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:28:26,924 INFO L470 AbstractCegarLoop]: Abstraction has 5174 states and 7683 transitions. [2021-12-18 15:28:26,924 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) [2021-12-18 15:28:26,924 INFO L276 IsEmpty]: Start isEmpty. Operand 5174 states and 7683 transitions. [2021-12-18 15:28:26,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-18 15:28:26,933 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:28:26,933 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] [2021-12-18 15:28:26,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-18 15:28:26,933 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:28:26,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:28:26,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1905476737, now seen corresponding path program 1 times [2021-12-18 15:28:26,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:28:26,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99572944] [2021-12-18 15:28:26,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:28:26,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:28:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:28:27,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:28:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:28:27,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:28:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:28:27,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 15:28:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:28:27,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 15:28:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:28:27,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 15:28:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:28:27,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:28:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:28:27,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 15:28:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:28:27,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 15:28:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:28:27,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 15:28:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:28:27,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 15:28:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:28:27,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 15:28:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:28:27,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-18 15:28:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:28:27,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 15:28:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:28:27,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 15:28:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:28:27,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 15:28:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:28:27,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 15:28:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:28:27,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 15:28:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:28:27,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 15:28:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:28:27,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-18 15:28:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:28:27,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-18 15:28:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:28:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-18 15:28:27,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:28:27,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99572944] [2021-12-18 15:28:27,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99572944] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:28:27,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:28:27,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 15:28:27,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237457001] [2021-12-18 15:28:27,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:28:27,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 15:28:27,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:28:27,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 15:28:27,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-18 15:28:27,340 INFO L87 Difference]: Start difference. First operand 5174 states and 7683 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) [2021-12-18 15:28:30,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:28:33,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:28:39,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:28:41,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:28:48,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:29:05,079 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:29:07,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:29:08,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:29:08,659 INFO L93 Difference]: Finished difference Result 10641 states and 15878 transitions. [2021-12-18 15:29:08,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 15:29:08,660 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 [2021-12-18 15:29:08,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:29:08,674 INFO L225 Difference]: With dead ends: 10641 [2021-12-18 15:29:08,675 INFO L226 Difference]: Without dead ends: 5488 [2021-12-18 15:29:08,687 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 [2021-12-18 15:29:08,687 INFO L933 BasicCegarLoop]: 3454 mSDtfsCounter, 4310 mSDsluCounter, 3002 mSDsCounter, 0 mSdLazyCounter, 5620 mSolverCounterSat, 3167 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4829 SdHoareTripleChecker+Valid, 6456 SdHoareTripleChecker+Invalid, 8794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3167 IncrementalHoareTripleChecker+Valid, 5620 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.7s IncrementalHoareTripleChecker+Time [2021-12-18 15:29:08,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4829 Valid, 6456 Invalid, 8794 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3167 Valid, 5620 Invalid, 7 Unknown, 0 Unchecked, 40.7s Time] [2021-12-18 15:29:08,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5488 states. [2021-12-18 15:29:08,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5488 to 5176. [2021-12-18 15:29:08,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 3578 states have (on average 1.3577417551704862) internal successors, (4858), 3645 states have internal predecessors, (4858), 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) [2021-12-18 15:29:08,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 7685 transitions. [2021-12-18 15:29:08,855 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 7685 transitions. Word has length 173 [2021-12-18 15:29:08,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:29:08,856 INFO L470 AbstractCegarLoop]: Abstraction has 5176 states and 7685 transitions. [2021-12-18 15:29:08,856 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) [2021-12-18 15:29:08,856 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 7685 transitions. [2021-12-18 15:29:08,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-18 15:29:08,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:29:08,864 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] [2021-12-18 15:29:08,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-18 15:29:08,865 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:29:08,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:29:08,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1000196545, now seen corresponding path program 1 times [2021-12-18 15:29:08,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:29:08,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152289868] [2021-12-18 15:29:08,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:29:08,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:29:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:29:09,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:29:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:29:09,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:29:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:29:09,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 15:29:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:29:09,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 15:29:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:29:09,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 15:29:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:29:09,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:29:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:29:09,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 15:29:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:29:09,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 15:29:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:29:09,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 15:29:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:29:09,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 15:29:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:29:09,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 15:29:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:29:09,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-18 15:29:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:29:09,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 15:29:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:29:09,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 15:29:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:29:09,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 15:29:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:29:09,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 15:29:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:29:09,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 15:29:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:29:09,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 15:29:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:29:09,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-18 15:29:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:29:09,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-18 15:29:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:29:09,359 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-18 15:29:09,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:29:09,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152289868] [2021-12-18 15:29:09,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152289868] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 15:29:09,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 15:29:09,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 15:29:09,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491411106] [2021-12-18 15:29:09,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 15:29:09,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 15:29:09,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:29:09,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 15:29:09,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-18 15:29:09,361 INFO L87 Difference]: Start difference. First operand 5176 states and 7685 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) [2021-12-18 15:29:11,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:29:14,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:29:25,418 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:29:27,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:29:29,544 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:29:31,722 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:29:38,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:30:02,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:30:04,648 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:30:06,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:30:08,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 15:30:08,851 INFO L93 Difference]: Finished difference Result 10654 states and 15892 transitions. [2021-12-18 15:30:08,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 15:30:08,851 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 173 [2021-12-18 15:30:08,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 15:30:08,871 INFO L225 Difference]: With dead ends: 10654 [2021-12-18 15:30:08,871 INFO L226 Difference]: Without dead ends: 5481 [2021-12-18 15:30:08,887 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 [2021-12-18 15:30:08,887 INFO L933 BasicCegarLoop]: 3463 mSDtfsCounter, 2413 mSDsluCounter, 5071 mSDsCounter, 0 mSdLazyCounter, 8669 mSolverCounterSat, 1776 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2932 SdHoareTripleChecker+Valid, 8534 SdHoareTripleChecker+Invalid, 10453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1776 IncrementalHoareTripleChecker+Valid, 8669 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.7s IncrementalHoareTripleChecker+Time [2021-12-18 15:30:08,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2932 Valid, 8534 Invalid, 10453 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1776 Valid, 8669 Invalid, 8 Unknown, 0 Unchecked, 58.7s Time] [2021-12-18 15:30:08,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2021-12-18 15:30:09,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 5162. [2021-12-18 15:30:09,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5162 states, 3572 states have (on average 1.3572228443449048) internal successors, (4848), 3639 states have internal predecessors, (4848), 1399 states have call successors, (1399), 179 states have call predecessors, (1399), 190 states have return successors, (1412), 1376 states have call predecessors, (1412), 1373 states have call successors, (1412) [2021-12-18 15:30:09,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5162 states to 5162 states and 7659 transitions. [2021-12-18 15:30:09,070 INFO L78 Accepts]: Start accepts. Automaton has 5162 states and 7659 transitions. Word has length 173 [2021-12-18 15:30:09,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 15:30:09,070 INFO L470 AbstractCegarLoop]: Abstraction has 5162 states and 7659 transitions. [2021-12-18 15:30:09,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2021-12-18 15:30:09,071 INFO L276 IsEmpty]: Start isEmpty. Operand 5162 states and 7659 transitions. [2021-12-18 15:30:09,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-18 15:30:09,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 15:30:09,079 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, 1, 1, 1, 1, 1, 1] [2021-12-18 15:30:09,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-18 15:30:09,079 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 15:30:09,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 15:30:09,079 INFO L85 PathProgramCache]: Analyzing trace with hash 2016097417, now seen corresponding path program 1 times [2021-12-18 15:30:09,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 15:30:09,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390223285] [2021-12-18 15:30:09,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:30:09,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 15:30:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:30:09,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 15:30:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:30:09,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 15:30:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:30:09,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 15:30:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:30:09,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 15:30:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:30:09,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 15:30:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:30:09,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 15:30:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:30:09,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:30:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:30:09,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 15:30:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:30:09,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 15:30:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:30:09,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-18 15:30:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:30:09,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:30:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:30:09,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-18 15:30:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:30:09,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 15:30:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:30:09,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 15:30:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:30:09,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 15:30:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:30:09,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-18 15:30:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:30:09,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 15:30:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:30:09,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 15:30:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:30:09,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 15:30:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:30:09,938 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-18 15:30:09,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 15:30:09,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390223285] [2021-12-18 15:30:09,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390223285] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 15:30:09,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80088713] [2021-12-18 15:30:09,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 15:30:09,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 15:30:09,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 15:30:09,940 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 15:30:09,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 15:30:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 15:30:11,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 10466 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 15:30:11,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 15:30:12,917 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-18 15:30:12,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 15:30:13,834 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-18 15:30:13,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80088713] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 15:30:13,834 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 15:30:13,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 20 [2021-12-18 15:30:13,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190071698] [2021-12-18 15:30:13,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 15:30:13,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-18 15:30:13,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 15:30:13,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-18 15:30:13,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-12-18 15:30:13,838 INFO L87 Difference]: Start difference. First operand 5162 states and 7659 transitions. Second operand has 20 states, 20 states have (on average 12.6) internal successors, (252), 14 states have internal predecessors, (252), 3 states have call successors, (55), 8 states have call predecessors, (55), 2 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-12-18 15:30:17,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:30:22,506 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:30:34,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 15:30:48,784 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15