./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.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-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.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 106df4f5c2a241158f9b42d6bacea5fef4152f7015c080096ac6f687357e10b4 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:53:30,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:53:30,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:53:30,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:53:30,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:53:30,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:53:30,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:53:30,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:53:30,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:53:30,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:53:30,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:53:30,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:53:30,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:53:30,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:53:30,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:53:30,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:53:30,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:53:30,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:53:30,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:53:30,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:53:30,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:53:30,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:53:30,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:53:30,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:53:30,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:53:30,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:53:30,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:53:30,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:53:30,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:53:30,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:53:30,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:53:30,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:53:30,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:53:30,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:53:30,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:53:30,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:53:30,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:53:30,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:53:30,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:53:30,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:53:30,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:53:30,489 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:53:30,510 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:53:30,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:53:30,511 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:53:30,511 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:53:30,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:53:30,512 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:53:30,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:53:30,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:53:30,513 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:53:30,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:53:30,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:53:30,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:53:30,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:53:30,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:53:30,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:53:30,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:53:30,514 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:53:30,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:53:30,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:53:30,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:53:30,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:53:30,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:53:30,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:53:30,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:53:30,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:53:30,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:53:30,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:53:30,516 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:53:30,516 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:53:30,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:53:30,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:53:30,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 106df4f5c2a241158f9b42d6bacea5fef4152f7015c080096ac6f687357e10b4 [2021-12-16 03:53:30,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:53:30,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:53:30,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:53:30,744 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:53:30,745 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:53:30,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i [2021-12-16 03:53:30,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a4e98fe5/1fb0ab22b537456fb0cf8503a0d93ae1/FLAGb23641564 [2021-12-16 03:53:31,406 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:53:31,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i [2021-12-16 03:53:31,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a4e98fe5/1fb0ab22b537456fb0cf8503a0d93ae1/FLAGb23641564 [2021-12-16 03:53:31,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a4e98fe5/1fb0ab22b537456fb0cf8503a0d93ae1 [2021-12-16 03:53:31,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:53:31,782 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:53:31,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:53:31,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:53:31,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:53:31,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:53:31" (1/1) ... [2021-12-16 03:53:31,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fa233fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:31, skipping insertion in model container [2021-12-16 03:53:31,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:53:31" (1/1) ... [2021-12-16 03:53:31,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:53:31,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:53:32,846 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-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i[247200,247213] [2021-12-16 03:53:32,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:53:32,926 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:53:33,136 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-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i[247200,247213] [2021-12-16 03:53:33,142 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:53:33,174 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:53:33,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33 WrapperNode [2021-12-16 03:53:33,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:53:33,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:53:33,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:53:33,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:53:33,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2021-12-16 03:53:33,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2021-12-16 03:53:33,349 INFO L137 Inliner]: procedures = 216, calls = 1408, calls flagged for inlining = 108, calls inlined = 97, statements flattened = 3072 [2021-12-16 03:53:33,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:53:33,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:53:33,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:53:33,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:53:33,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2021-12-16 03:53:33,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2021-12-16 03:53:33,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2021-12-16 03:53:33,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2021-12-16 03:53:33,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2021-12-16 03:53:33,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2021-12-16 03:53:33,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2021-12-16 03:53:33,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:53:33,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:53:33,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:53:33,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:53:33,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (1/1) ... [2021-12-16 03:53:33,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:53:33,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:53:33,521 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) [2021-12-16 03:53:33,539 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 [2021-12-16 03:53:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-16 03:53:33,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-16 03:53:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_free_iso_urbs [2021-12-16 03:53:33,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_free_iso_urbs [2021-12-16 03:53:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-16 03:53:33,549 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-16 03:53:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-16 03:53:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 03:53:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-12-16 03:53:33,550 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-12-16 03:53:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2021-12-16 03:53:33,550 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2021-12-16 03:53:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 03:53:33,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 03:53:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_iso_mutex_of_ttusb_dec [2021-12-16 03:53:33,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_iso_mutex_of_ttusb_dec [2021-12-16 03:53:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_iso_xfer [2021-12-16 03:53:33,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_iso_xfer [2021-12-16 03:53:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-16 03:53:33,551 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-16 03:53:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-16 03:53:33,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-16 03:53:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_usb_mutex_of_ttusb_dec [2021-12-16 03:53:33,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_usb_mutex_of_ttusb_dec [2021-12-16 03:53:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2021-12-16 03:53:33,552 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2021-12-16 03:53:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-16 03:53:33,552 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-16 03:53:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:53:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-12-16 03:53:33,553 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-12-16 03:53:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-16 03:53:33,553 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-16 03:53:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:53:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-16 03:53:33,553 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-16 03:53:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-12-16 03:53:33,554 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-12-16 03:53:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:53:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:53:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-16 03:53:33,554 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-16 03:53:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-16 03:53:33,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-16 03:53:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-16 03:53:33,555 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-16 03:53:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-16 03:53:33,555 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-16 03:53:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-16 03:53:33,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-16 03:53:33,556 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-16 03:53:33,556 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-16 03:53:33,556 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-16 03:53:33,556 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-16 03:53:33,557 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_model [2021-12-16 03:53:33,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_model [2021-12-16 03:53:33,557 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-12-16 03:53:33,558 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-12-16 03:53:33,558 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-12-16 03:53:33,558 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-12-16 03:53:33,558 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_stop_iso_xfer [2021-12-16 03:53:33,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_stop_iso_xfer [2021-12-16 03:53:33,559 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-16 03:53:33,559 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-16 03:53:33,559 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_filter_pes2ts_init [2021-12-16 03:53:33,559 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_filter_pes2ts_init [2021-12-16 03:53:33,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-16 03:53:33,559 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-16 03:53:33,559 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-16 03:53:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-16 03:53:33,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-16 03:53:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-16 03:53:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2021-12-16 03:53:33,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2021-12-16 03:53:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-12-16 03:53:33,561 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-12-16 03:53:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:53:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-16 03:53:33,561 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-16 03:53:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-16 03:53:33,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-16 03:53:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-16 03:53:33,562 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-16 03:53:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-16 03:53:33,562 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-16 03:53:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-16 03:53:33,562 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-16 03:53:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_send_command [2021-12-16 03:53:33,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_send_command [2021-12-16 03:53:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:53:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_setup_urbs [2021-12-16 03:53:33,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_setup_urbs [2021-12-16 03:53:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-12-16 03:53:33,563 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-12-16 03:53:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-16 03:53:33,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-16 03:53:33,564 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_pids [2021-12-16 03:53:33,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_pids [2021-12-16 03:53:33,564 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_usb [2021-12-16 03:53:33,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_usb [2021-12-16 03:53:33,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:53:33,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:53:33,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:53:33,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_iso_mutex_of_ttusb_dec [2021-12-16 03:53:33,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_iso_mutex_of_ttusb_dec [2021-12-16 03:53:33,566 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-16 03:53:33,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-16 03:53:33,566 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-16 03:53:33,566 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-16 03:53:33,566 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2021-12-16 03:53:33,566 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2021-12-16 03:53:33,566 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-16 03:53:33,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-16 03:53:33,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:53:33,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:53:33,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:53:34,034 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:53:34,038 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:53:38,155 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:53:38,172 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:53:38,172 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 03:53:38,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:53:38 BoogieIcfgContainer [2021-12-16 03:53:38,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:53:38,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:53:38,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:53:38,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:53:38,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:53:31" (1/3) ... [2021-12-16 03:53:38,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3452b5b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:53:38, skipping insertion in model container [2021-12-16 03:53:38,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:53:33" (2/3) ... [2021-12-16 03:53:38,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3452b5b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:53:38, skipping insertion in model container [2021-12-16 03:53:38,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:53:38" (3/3) ... [2021-12-16 03:53:38,186 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-ldv_main0.cil.out.i [2021-12-16 03:53:38,191 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:53:38,191 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:53:38,232 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:53:38,238 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 [2021-12-16 03:53:38,238 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:53:38,280 INFO L276 IsEmpty]: Start isEmpty. Operand has 952 states, 696 states have (on average 1.3261494252873562) internal successors, (923), 716 states have internal predecessors, (923), 204 states have call successors, (204), 50 states have call predecessors, (204), 50 states have return successors, (204), 198 states have call predecessors, (204), 204 states have call successors, (204) [2021-12-16 03:53:38,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 03:53:38,283 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:53:38,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:53:38,284 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:53:38,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:53:38,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1755858725, now seen corresponding path program 1 times [2021-12-16 03:53:38,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:53:38,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287299187] [2021-12-16 03:53:38,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:53:38,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:53:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:38,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:53:38,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:53:38,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287299187] [2021-12-16 03:53:38,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287299187] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:53:38,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:53:38,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:53:38,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322975453] [2021-12-16 03:53:38,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:53:38,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:53:38,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:53:38,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:53:38,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:53:38,632 INFO L87 Difference]: Start difference. First operand has 952 states, 696 states have (on average 1.3261494252873562) internal successors, (923), 716 states have internal predecessors, (923), 204 states have call successors, (204), 50 states have call predecessors, (204), 50 states have return successors, (204), 198 states have call predecessors, (204), 204 states have call successors, (204) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:38,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:53:38,854 INFO L93 Difference]: Finished difference Result 2823 states and 4045 transitions. [2021-12-16 03:53:38,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:53:38,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-16 03:53:38,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:53:38,879 INFO L225 Difference]: With dead ends: 2823 [2021-12-16 03:53:38,879 INFO L226 Difference]: Without dead ends: 1868 [2021-12-16 03:53:38,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:53:38,893 INFO L933 BasicCegarLoop]: 1587 mSDtfsCounter, 1313 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:53:38,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1313 Valid, 2875 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:53:38,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2021-12-16 03:53:39,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1863. [2021-12-16 03:53:39,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1368 states have (on average 1.3216374269005848) internal successors, (1808), 1399 states have internal predecessors, (1808), 397 states have call successors, (397), 99 states have call predecessors, (397), 97 states have return successors, (398), 374 states have call predecessors, (398), 386 states have call successors, (398) [2021-12-16 03:53:39,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 2603 transitions. [2021-12-16 03:53:39,061 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 2603 transitions. Word has length 9 [2021-12-16 03:53:39,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:53:39,061 INFO L470 AbstractCegarLoop]: Abstraction has 1863 states and 2603 transitions. [2021-12-16 03:53:39,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:39,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 2603 transitions. [2021-12-16 03:53:39,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-16 03:53:39,062 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:53:39,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:53:39,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:53:39,063 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:53:39,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:53:39,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1403360505, now seen corresponding path program 1 times [2021-12-16 03:53:39,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:53:39,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132018854] [2021-12-16 03:53:39,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:53:39,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:53:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:39,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:53:39,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:53:39,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132018854] [2021-12-16 03:53:39,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132018854] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:53:39,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:53:39,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:53:39,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959346828] [2021-12-16 03:53:39,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:53:39,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:53:39,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:53:39,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:53:39,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:53:39,179 INFO L87 Difference]: Start difference. First operand 1863 states and 2603 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:39,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:53:39,238 INFO L93 Difference]: Finished difference Result 1865 states and 2604 transitions. [2021-12-16 03:53:39,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:53:39,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-16 03:53:39,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:53:39,248 INFO L225 Difference]: With dead ends: 1865 [2021-12-16 03:53:39,248 INFO L226 Difference]: Without dead ends: 1862 [2021-12-16 03:53:39,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:53:39,253 INFO L933 BasicCegarLoop]: 1311 mSDtfsCounter, 1305 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:53:39,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 1311 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:53:39,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2021-12-16 03:53:39,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1862. [2021-12-16 03:53:39,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1368 states have (on average 1.320906432748538) internal successors, (1807), 1398 states have internal predecessors, (1807), 396 states have call successors, (396), 99 states have call predecessors, (396), 97 states have return successors, (398), 374 states have call predecessors, (398), 386 states have call successors, (398) [2021-12-16 03:53:39,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2601 transitions. [2021-12-16 03:53:39,309 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2601 transitions. Word has length 10 [2021-12-16 03:53:39,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:53:39,310 INFO L470 AbstractCegarLoop]: Abstraction has 1862 states and 2601 transitions. [2021-12-16 03:53:39,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:39,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2601 transitions. [2021-12-16 03:53:39,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-16 03:53:39,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:53:39,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:53:39,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 03:53:39,312 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:53:39,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:53:39,313 INFO L85 PathProgramCache]: Analyzing trace with hash -554903960, now seen corresponding path program 1 times [2021-12-16 03:53:39,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:53:39,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504446658] [2021-12-16 03:53:39,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:53:39,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:53:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:39,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:53:39,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:53:39,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504446658] [2021-12-16 03:53:39,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504446658] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:53:39,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:53:39,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:53:39,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487451183] [2021-12-16 03:53:39,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:53:39,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:53:39,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:53:39,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:53:39,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:53:39,378 INFO L87 Difference]: Start difference. First operand 1862 states and 2601 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:39,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:53:39,456 INFO L93 Difference]: Finished difference Result 1864 states and 2602 transitions. [2021-12-16 03:53:39,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:53:39,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-16 03:53:39,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:53:39,465 INFO L225 Difference]: With dead ends: 1864 [2021-12-16 03:53:39,465 INFO L226 Difference]: Without dead ends: 1861 [2021-12-16 03:53:39,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:53:39,472 INFO L933 BasicCegarLoop]: 1309 mSDtfsCounter, 1302 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:53:39,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1302 Valid, 1309 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:53:39,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2021-12-16 03:53:39,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1861. [2021-12-16 03:53:39,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1368 states have (on average 1.3201754385964912) internal successors, (1806), 1397 states have internal predecessors, (1806), 395 states have call successors, (395), 99 states have call predecessors, (395), 97 states have return successors, (398), 374 states have call predecessors, (398), 386 states have call successors, (398) [2021-12-16 03:53:39,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2599 transitions. [2021-12-16 03:53:39,534 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2599 transitions. Word has length 11 [2021-12-16 03:53:39,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:53:39,534 INFO L470 AbstractCegarLoop]: Abstraction has 1861 states and 2599 transitions. [2021-12-16 03:53:39,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:39,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2599 transitions. [2021-12-16 03:53:39,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-16 03:53:39,535 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:53:39,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:53:39,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 03:53:39,536 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:53:39,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:53:39,536 INFO L85 PathProgramCache]: Analyzing trace with hash -22549974, now seen corresponding path program 1 times [2021-12-16 03:53:39,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:53:39,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104647354] [2021-12-16 03:53:39,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:53:39,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:53:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:39,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:53:39,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:53:39,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104647354] [2021-12-16 03:53:39,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104647354] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:53:39,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:53:39,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:53:39,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892840909] [2021-12-16 03:53:39,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:53:39,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:53:39,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:53:39,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:53:39,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:53:39,605 INFO L87 Difference]: Start difference. First operand 1861 states and 2599 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:39,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:53:39,742 INFO L93 Difference]: Finished difference Result 5538 states and 7845 transitions. [2021-12-16 03:53:39,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:53:39,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-16 03:53:39,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:53:39,756 INFO L225 Difference]: With dead ends: 5538 [2021-12-16 03:53:39,756 INFO L226 Difference]: Without dead ends: 3675 [2021-12-16 03:53:39,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:53:39,762 INFO L933 BasicCegarLoop]: 1609 mSDtfsCounter, 1307 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:53:39,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1307 Valid, 2898 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:53:39,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3675 states. [2021-12-16 03:53:39,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3675 to 3655. [2021-12-16 03:53:39,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3655 states, 2697 states have (on average 1.32146829810901) internal successors, (3564), 2751 states have internal predecessors, (3564), 766 states have call successors, (766), 194 states have call predecessors, (766), 191 states have return successors, (830), 729 states have call predecessors, (830), 754 states have call successors, (830) [2021-12-16 03:53:39,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 5160 transitions. [2021-12-16 03:53:39,878 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 5160 transitions. Word has length 12 [2021-12-16 03:53:39,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:53:39,878 INFO L470 AbstractCegarLoop]: Abstraction has 3655 states and 5160 transitions. [2021-12-16 03:53:39,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:53:39,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 5160 transitions. [2021-12-16 03:53:39,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 03:53:39,888 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:53:39,889 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:53:39,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 03:53:39,889 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:53:39,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:53:39,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1548184114, now seen corresponding path program 1 times [2021-12-16 03:53:39,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:53:39,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136277252] [2021-12-16 03:53:39,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:53:39,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:53:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:40,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 03:53:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:40,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:40,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:40,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-16 03:53:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:40,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 03:53:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:40,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:53:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:40,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:53:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:40,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-16 03:53:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:40,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 03:53:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:40,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:53:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:40,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 03:53:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:40,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 03:53:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:40,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:40,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 03:53:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:40,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:40,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 03:53:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:40,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 03:53:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:40,229 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-16 03:53:40,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:53:40,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136277252] [2021-12-16 03:53:40,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136277252] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:53:40,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:53:40,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:53:40,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717483848] [2021-12-16 03:53:40,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:53:40,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:53:40,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:53:40,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:53:40,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:53:40,232 INFO L87 Difference]: Start difference. First operand 3655 states and 5160 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 03:53:42,365 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 [] [2021-12-16 03:53:43,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:53:43,783 INFO L93 Difference]: Finished difference Result 7439 states and 10705 transitions. [2021-12-16 03:53:43,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 03:53:43,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2021-12-16 03:53:43,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:53:43,799 INFO L225 Difference]: With dead ends: 7439 [2021-12-16 03:53:43,799 INFO L226 Difference]: Without dead ends: 3787 [2021-12-16 03:53:43,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:53:43,818 INFO L933 BasicCegarLoop]: 1185 mSDtfsCounter, 1360 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 377 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-16 03:53:43,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1496 Valid, 1737 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 323 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2021-12-16 03:53:43,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3787 states. [2021-12-16 03:53:43,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3787 to 3635. [2021-12-16 03:53:43,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 2677 states have (on average 1.2581247665296975) internal successors, (3368), 2731 states have internal predecessors, (3368), 766 states have call successors, (766), 194 states have call predecessors, (766), 191 states have return successors, (830), 729 states have call predecessors, (830), 754 states have call successors, (830) [2021-12-16 03:53:43,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 4964 transitions. [2021-12-16 03:53:43,936 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 4964 transitions. Word has length 134 [2021-12-16 03:53:43,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:53:43,936 INFO L470 AbstractCegarLoop]: Abstraction has 3635 states and 4964 transitions. [2021-12-16 03:53:43,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 03:53:43,937 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 4964 transitions. [2021-12-16 03:53:43,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 03:53:43,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:53:43,944 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:53:43,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 03:53:43,944 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:53:43,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:53:43,944 INFO L85 PathProgramCache]: Analyzing trace with hash 761767741, now seen corresponding path program 1 times [2021-12-16 03:53:43,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:53:43,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042560265] [2021-12-16 03:53:43,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:53:43,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:53:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:44,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 03:53:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:44,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 03:53:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:44,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 03:53:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:44,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 03:53:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:44,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:53:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:44,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:44,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 03:53:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:44,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:53:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:44,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 03:53:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:44,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 03:53:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:44,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:44,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 03:53:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:44,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 03:53:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:44,290 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 03:53:44,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:53:44,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042560265] [2021-12-16 03:53:44,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042560265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:53:44,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:53:44,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:53:44,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194699425] [2021-12-16 03:53:44,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:53:44,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:53:44,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:53:44,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:53:44,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:53:44,293 INFO L87 Difference]: Start difference. First operand 3635 states and 4964 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-16 03:53:46,713 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 [] [2021-12-16 03:53:48,728 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 [] [2021-12-16 03:53:52,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:53:52,085 INFO L93 Difference]: Finished difference Result 7642 states and 10693 transitions. [2021-12-16 03:53:52,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:53:52,086 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2021-12-16 03:53:52,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:53:52,107 INFO L225 Difference]: With dead ends: 7642 [2021-12-16 03:53:52,107 INFO L226 Difference]: Without dead ends: 4010 [2021-12-16 03:53:52,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:53:52,123 INFO L933 BasicCegarLoop]: 1186 mSDtfsCounter, 894 mSDsluCounter, 2584 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 506 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 3770 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-12-16 03:53:52,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1033 Valid, 3770 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 1273 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2021-12-16 03:53:52,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2021-12-16 03:53:52,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 3675. [2021-12-16 03:53:52,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3675 states, 2717 states have (on average 1.2598454177401546) internal successors, (3423), 2771 states have internal predecessors, (3423), 766 states have call successors, (766), 194 states have call predecessors, (766), 191 states have return successors, (830), 729 states have call predecessors, (830), 754 states have call successors, (830) [2021-12-16 03:53:52,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 5019 transitions. [2021-12-16 03:53:52,286 INFO L78 Accepts]: Start accepts. Automaton has 3675 states and 5019 transitions. Word has length 134 [2021-12-16 03:53:52,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:53:52,287 INFO L470 AbstractCegarLoop]: Abstraction has 3675 states and 5019 transitions. [2021-12-16 03:53:52,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-16 03:53:52,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states and 5019 transitions. [2021-12-16 03:53:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 03:53:52,291 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:53:52,291 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:53:52,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 03:53:52,292 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:53:52,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:53:52,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1103091386, now seen corresponding path program 1 times [2021-12-16 03:53:52,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:53:52,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370503193] [2021-12-16 03:53:52,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:53:52,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:53:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:52,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 03:53:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:52,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:52,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:52,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-16 03:53:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:52,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 03:53:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:52,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:53:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:52,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:53:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:52,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-16 03:53:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:52,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 03:53:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:52,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:53:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:52,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 03:53:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:52,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 03:53:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:52,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:52,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 03:53:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:52,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:52,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 03:53:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:52,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 03:53:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:52,601 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-16 03:53:52,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:53:52,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370503193] [2021-12-16 03:53:52,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370503193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:53:52,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:53:52,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:53:52,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966984195] [2021-12-16 03:53:52,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:53:52,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:53:52,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:53:52,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:53:52,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:53:52,603 INFO L87 Difference]: Start difference. First operand 3675 states and 5019 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-16 03:53:54,742 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 [] [2021-12-16 03:53:55,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:53:55,857 INFO L93 Difference]: Finished difference Result 7319 states and 10011 transitions. [2021-12-16 03:53:55,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 03:53:55,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2021-12-16 03:53:55,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:53:55,873 INFO L225 Difference]: With dead ends: 7319 [2021-12-16 03:53:55,873 INFO L226 Difference]: Without dead ends: 3647 [2021-12-16 03:53:55,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:53:55,916 INFO L933 BasicCegarLoop]: 1162 mSDtfsCounter, 1274 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 326 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:53:55,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1394 Valid, 1698 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 242 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2021-12-16 03:53:55,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3647 states. [2021-12-16 03:53:56,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3647 to 3495. [2021-12-16 03:53:56,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3495 states, 2569 states have (on average 1.253016738030362) internal successors, (3219), 2623 states have internal predecessors, (3219), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (794), 697 states have call predecessors, (794), 722 states have call successors, (794) [2021-12-16 03:53:56,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 4747 transitions. [2021-12-16 03:53:56,067 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 4747 transitions. Word has length 134 [2021-12-16 03:53:56,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:53:56,068 INFO L470 AbstractCegarLoop]: Abstraction has 3495 states and 4747 transitions. [2021-12-16 03:53:56,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-16 03:53:56,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 4747 transitions. [2021-12-16 03:53:56,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-16 03:53:56,072 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:53:56,072 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-12-16 03:53:56,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 03:53:56,072 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:53:56,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:53:56,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1886976464, now seen corresponding path program 1 times [2021-12-16 03:53:56,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:53:56,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937195011] [2021-12-16 03:53:56,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:53:56,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:53:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:56,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 03:53:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:56,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:56,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:56,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-16 03:53:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:56,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 03:53:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:56,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:53:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:56,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:53:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:56,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-16 03:53:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:56,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 03:53:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:56,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:53:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:56,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 03:53:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:56,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 03:53:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:56,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:56,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 03:53:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:56,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:53:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:56,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-16 03:53:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:56,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-16 03:53:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:53:56,373 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-16 03:53:56,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:53:56,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937195011] [2021-12-16 03:53:56,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937195011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:53:56,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:53:56,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:53:56,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883533640] [2021-12-16 03:53:56,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:53:56,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:53:56,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:53:56,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:53:56,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:53:56,375 INFO L87 Difference]: Start difference. First operand 3495 states and 4747 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 03:53:58,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:54:02,437 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:54:03,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:54:03,092 INFO L93 Difference]: Finished difference Result 7151 states and 9762 transitions. [2021-12-16 03:54:03,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:54:03,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 151 [2021-12-16 03:54:03,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:54:03,111 INFO L225 Difference]: With dead ends: 7151 [2021-12-16 03:54:03,112 INFO L226 Difference]: Without dead ends: 3659 [2021-12-16 03:54:03,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:54:03,126 INFO L933 BasicCegarLoop]: 2196 mSDtfsCounter, 1323 mSDsluCounter, 1969 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 356 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 4165 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-12-16 03:54:03,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1482 Valid, 4165 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 708 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2021-12-16 03:54:03,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2021-12-16 03:54:03,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3493. [2021-12-16 03:54:03,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3493 states, 2567 states have (on average 1.2516556291390728) internal successors, (3213), 2622 states have internal predecessors, (3213), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-16 03:54:03,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3493 states to 3493 states and 4717 transitions. [2021-12-16 03:54:03,241 INFO L78 Accepts]: Start accepts. Automaton has 3493 states and 4717 transitions. Word has length 151 [2021-12-16 03:54:03,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:54:03,263 INFO L470 AbstractCegarLoop]: Abstraction has 3493 states and 4717 transitions. [2021-12-16 03:54:03,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 03:54:03,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3493 states and 4717 transitions. [2021-12-16 03:54:03,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-16 03:54:03,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:54:03,266 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-12-16 03:54:03,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 03:54:03,266 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:54:03,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:54:03,267 INFO L85 PathProgramCache]: Analyzing trace with hash 413846126, now seen corresponding path program 1 times [2021-12-16 03:54:03,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:54:03,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836258243] [2021-12-16 03:54:03,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:54:03,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:54:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:03,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 03:54:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:03,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:03,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:03,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-16 03:54:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:03,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 03:54:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:03,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:54:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:03,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:54:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:03,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-16 03:54:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:03,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 03:54:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:03,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:54:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:03,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 03:54:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:03,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 03:54:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:03,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:03,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 03:54:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:03,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:03,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-16 03:54:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:03,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-16 03:54:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-16 03:54:03,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:54:03,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836258243] [2021-12-16 03:54:03,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836258243] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:54:03,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:54:03,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:54:03,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310195954] [2021-12-16 03:54:03,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:54:03,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:54:03,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:54:03,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:54:03,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:54:03,577 INFO L87 Difference]: Start difference. First operand 3493 states and 4717 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 03:54:05,819 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:54:09,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:54:10,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:54:10,354 INFO L93 Difference]: Finished difference Result 8753 states and 12077 transitions. [2021-12-16 03:54:10,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:54:10,355 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 151 [2021-12-16 03:54:10,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:54:10,379 INFO L225 Difference]: With dead ends: 8753 [2021-12-16 03:54:10,383 INFO L226 Difference]: Without dead ends: 5263 [2021-12-16 03:54:10,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:54:10,397 INFO L933 BasicCegarLoop]: 1511 mSDtfsCounter, 1181 mSDsluCounter, 4062 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 427 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 5573 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-12-16 03:54:10,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1225 Valid, 5573 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 1070 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2021-12-16 03:54:10,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5263 states. [2021-12-16 03:54:10,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5263 to 3505. [2021-12-16 03:54:10,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 2579 states have (on average 1.250484683986041) internal successors, (3225), 2634 states have internal predecessors, (3225), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-16 03:54:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 4729 transitions. [2021-12-16 03:54:10,538 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 4729 transitions. Word has length 151 [2021-12-16 03:54:10,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:54:10,539 INFO L470 AbstractCegarLoop]: Abstraction has 3505 states and 4729 transitions. [2021-12-16 03:54:10,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 03:54:10,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 4729 transitions. [2021-12-16 03:54:10,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-16 03:54:10,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:54:10,542 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:54:10,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 03:54:10,543 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:54:10,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:54:10,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1898802128, now seen corresponding path program 1 times [2021-12-16 03:54:10,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:54:10,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218289254] [2021-12-16 03:54:10,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:54:10,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:54:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:10,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 03:54:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:10,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:10,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:10,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-16 03:54:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:10,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 03:54:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:10,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:54:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:10,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:54:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:10,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-16 03:54:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:10,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 03:54:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:10,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:54:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:10,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 03:54:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:10,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 03:54:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:10,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:10,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 03:54:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:10,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-16 03:54:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:10,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:10,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-16 03:54:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:10,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-16 03:54:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:10,844 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-16 03:54:10,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:54:10,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218289254] [2021-12-16 03:54:10,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218289254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:54:10,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:54:10,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:54:10,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641357638] [2021-12-16 03:54:10,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:54:10,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:54:10,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:54:10,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:54:10,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:54:10,846 INFO L87 Difference]: Start difference. First operand 3505 states and 4729 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 03:54:13,125 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:54:15,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:54:19,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:54:21,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:54:22,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:54:22,203 INFO L93 Difference]: Finished difference Result 8233 states and 11505 transitions. [2021-12-16 03:54:22,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:54:22,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2021-12-16 03:54:22,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:54:22,220 INFO L225 Difference]: With dead ends: 8233 [2021-12-16 03:54:22,221 INFO L226 Difference]: Without dead ends: 4731 [2021-12-16 03:54:22,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:54:22,228 INFO L933 BasicCegarLoop]: 1433 mSDtfsCounter, 753 mSDsluCounter, 2293 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 486 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 3726 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:54:22,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 3726 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 1079 Invalid, 4 Unknown, 0 Unchecked, 11.2s Time] [2021-12-16 03:54:22,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2021-12-16 03:54:22,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 3509. [2021-12-16 03:54:22,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 2583 states have (on average 1.2500967866821526) internal successors, (3229), 2638 states have internal predecessors, (3229), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-16 03:54:22,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 4733 transitions. [2021-12-16 03:54:22,356 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 4733 transitions. Word has length 160 [2021-12-16 03:54:22,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:54:22,357 INFO L470 AbstractCegarLoop]: Abstraction has 3509 states and 4733 transitions. [2021-12-16 03:54:22,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 03:54:22,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 4733 transitions. [2021-12-16 03:54:22,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-16 03:54:22,360 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:54:22,360 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:54:22,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 03:54:22,362 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:54:22,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:54:22,362 INFO L85 PathProgramCache]: Analyzing trace with hash -458669311, now seen corresponding path program 1 times [2021-12-16 03:54:22,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:54:22,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530023163] [2021-12-16 03:54:22,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:54:22,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:54:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:22,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 03:54:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:22,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:22,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:22,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-16 03:54:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:22,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 03:54:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:22,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:54:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:22,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:54:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:22,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-16 03:54:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:22,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 03:54:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:22,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:54:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:22,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 03:54:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:22,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 03:54:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:22,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:22,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 03:54:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:22,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:22,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-16 03:54:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:22,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-16 03:54:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:22,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:22,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-16 03:54:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:22,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-16 03:54:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:22,673 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-16 03:54:22,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:54:22,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530023163] [2021-12-16 03:54:22,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530023163] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:54:22,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591346981] [2021-12-16 03:54:22,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:54:22,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:54:22,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:54:22,676 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) [2021-12-16 03:54:22,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 03:54:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:23,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 2223 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 03:54:23,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:54:23,502 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 03:54:23,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:54:23,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591346981] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:54:23,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:54:23,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-16 03:54:23,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068500789] [2021-12-16 03:54:23,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:54:23,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:54:23,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:54:23,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:54:23,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:54:23,505 INFO L87 Difference]: Start difference. First operand 3509 states and 4733 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-16 03:54:23,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:54:23,980 INFO L93 Difference]: Finished difference Result 7031 states and 9503 transitions. [2021-12-16 03:54:23,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:54:23,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 173 [2021-12-16 03:54:23,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:54:23,997 INFO L225 Difference]: With dead ends: 7031 [2021-12-16 03:54:23,997 INFO L226 Difference]: Without dead ends: 3525 [2021-12-16 03:54:24,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:54:24,006 INFO L933 BasicCegarLoop]: 1191 mSDtfsCounter, 4 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 03:54:24,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2379 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 03:54:24,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2021-12-16 03:54:24,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 3513. [2021-12-16 03:54:24,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 2587 states have (on average 1.2497100889060688) internal successors, (3233), 2642 states have internal predecessors, (3233), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-16 03:54:24,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 4737 transitions. [2021-12-16 03:54:24,132 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 4737 transitions. Word has length 173 [2021-12-16 03:54:24,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:54:24,132 INFO L470 AbstractCegarLoop]: Abstraction has 3513 states and 4737 transitions. [2021-12-16 03:54:24,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-16 03:54:24,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 4737 transitions. [2021-12-16 03:54:24,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-16 03:54:24,135 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:54:24,135 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:54:24,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 03:54:24,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-16 03:54:24,354 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:54:24,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:54:24,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1697928550, now seen corresponding path program 1 times [2021-12-16 03:54:24,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:54:24,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380794138] [2021-12-16 03:54:24,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:54:24,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:54:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:24,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 03:54:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:24,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:24,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:24,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 03:54:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:24,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-16 03:54:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:24,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-16 03:54:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:24,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 03:54:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:24,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 03:54:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:24,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:54:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:24,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:24,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 03:54:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:24,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:54:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:24,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 03:54:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:24,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-16 03:54:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:24,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:24,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-16 03:54:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:24,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-16 03:54:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:24,584 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-16 03:54:24,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:54:24,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380794138] [2021-12-16 03:54:24,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380794138] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:54:24,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137864763] [2021-12-16 03:54:24,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:54:24,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:54:24,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:54:24,586 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) [2021-12-16 03:54:24,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 03:54:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:25,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 1996 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 03:54:25,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:54:25,354 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-16 03:54:25,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:54:25,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137864763] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:54:25,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:54:25,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-16 03:54:25,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603577034] [2021-12-16 03:54:25,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:54:25,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:54:25,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:54:25,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:54:25,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:54:25,356 INFO L87 Difference]: Start difference. First operand 3513 states and 4737 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 03:54:25,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:54:25,476 INFO L93 Difference]: Finished difference Result 7039 states and 9511 transitions. [2021-12-16 03:54:25,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:54:25,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 171 [2021-12-16 03:54:25,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:54:25,488 INFO L225 Difference]: With dead ends: 7039 [2021-12-16 03:54:25,488 INFO L226 Difference]: Without dead ends: 3529 [2021-12-16 03:54:25,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:54:25,498 INFO L933 BasicCegarLoop]: 1192 mSDtfsCounter, 2 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:54:25,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2380 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:54:25,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2021-12-16 03:54:25,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 3517. [2021-12-16 03:54:25,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3517 states, 2591 states have (on average 1.2493245851022772) internal successors, (3237), 2646 states have internal predecessors, (3237), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-16 03:54:25,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3517 states to 3517 states and 4741 transitions. [2021-12-16 03:54:25,603 INFO L78 Accepts]: Start accepts. Automaton has 3517 states and 4741 transitions. Word has length 171 [2021-12-16 03:54:25,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:54:25,604 INFO L470 AbstractCegarLoop]: Abstraction has 3517 states and 4741 transitions. [2021-12-16 03:54:25,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 03:54:25,604 INFO L276 IsEmpty]: Start isEmpty. Operand 3517 states and 4741 transitions. [2021-12-16 03:54:25,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-16 03:54:25,606 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:54:25,607 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:54:25,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 03:54:25,815 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,SelfDestructingSolverStorable11 [2021-12-16 03:54:25,816 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:54:25,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:54:25,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1395907559, now seen corresponding path program 1 times [2021-12-16 03:54:25,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:54:25,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197558871] [2021-12-16 03:54:25,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:54:25,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:54:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:25,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 03:54:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:25,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:25,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:25,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 03:54:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:25,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-16 03:54:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:25,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-16 03:54:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:25,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 03:54:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:25,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 03:54:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:26,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 03:54:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:26,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:54:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:26,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:26,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 03:54:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:26,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 03:54:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:26,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:54:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:26,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-16 03:54:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:26,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:26,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-16 03:54:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:26,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-16 03:54:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:26,107 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-16 03:54:26,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:54:26,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197558871] [2021-12-16 03:54:26,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197558871] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:54:26,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608163947] [2021-12-16 03:54:26,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:54:26,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:54:26,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:54:26,110 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) [2021-12-16 03:54:26,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 03:54:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:26,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 2015 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 03:54:26,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:54:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-16 03:54:26,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:54:26,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608163947] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:54:26,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:54:26,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 8 [2021-12-16 03:54:26,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667327846] [2021-12-16 03:54:26,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:54:26,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:54:26,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:54:26,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:54:26,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:54:26,917 INFO L87 Difference]: Start difference. First operand 3517 states and 4741 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 03:54:27,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:54:27,023 INFO L93 Difference]: Finished difference Result 7058 states and 9510 transitions. [2021-12-16 03:54:27,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 03:54:27,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 178 [2021-12-16 03:54:27,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:54:27,035 INFO L225 Difference]: With dead ends: 7058 [2021-12-16 03:54:27,035 INFO L226 Difference]: Without dead ends: 3540 [2021-12-16 03:54:27,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:54:27,044 INFO L933 BasicCegarLoop]: 1200 mSDtfsCounter, 17 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3581 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:54:27,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 3581 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:54:27,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3540 states. [2021-12-16 03:54:27,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3540 to 3529. [2021-12-16 03:54:27,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3529 states, 2603 states have (on average 1.2477910103726468) internal successors, (3248), 2658 states have internal predecessors, (3248), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-16 03:54:27,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4752 transitions. [2021-12-16 03:54:27,198 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4752 transitions. Word has length 178 [2021-12-16 03:54:27,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:54:27,198 INFO L470 AbstractCegarLoop]: Abstraction has 3529 states and 4752 transitions. [2021-12-16 03:54:27,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 03:54:27,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4752 transitions. [2021-12-16 03:54:27,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-16 03:54:27,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:54:27,200 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:54:27,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 03:54:27,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:54:27,408 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:54:27,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:54:27,408 INFO L85 PathProgramCache]: Analyzing trace with hash 362521239, now seen corresponding path program 1 times [2021-12-16 03:54:27,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:54:27,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936321943] [2021-12-16 03:54:27,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:54:27,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:54:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:27,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 03:54:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:27,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:27,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:27,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-16 03:54:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:27,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 03:54:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:27,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:54:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:27,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:54:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:27,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-16 03:54:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:27,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 03:54:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:27,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:54:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:27,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 03:54:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:27,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 03:54:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:27,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:27,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 03:54:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:27,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:27,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-16 03:54:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:27,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 03:54:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:27,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:27,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-16 03:54:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:27,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-16 03:54:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-16 03:54:27,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:54:27,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936321943] [2021-12-16 03:54:27,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936321943] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:54:27,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683610753] [2021-12-16 03:54:27,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:54:27,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:54:27,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:54:27,681 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) [2021-12-16 03:54:27,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 03:54:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:28,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 2323 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 03:54:28,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:54:28,525 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-16 03:54:28,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:54:28,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683610753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:54:28,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:54:28,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-16 03:54:28,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036139097] [2021-12-16 03:54:28,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:54:28,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:54:28,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:54:28,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:54:28,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:54:28,527 INFO L87 Difference]: Start difference. First operand 3529 states and 4752 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-16 03:54:28,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:54:28,644 INFO L93 Difference]: Finished difference Result 7063 states and 9529 transitions. [2021-12-16 03:54:28,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:54:28,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 176 [2021-12-16 03:54:28,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:54:28,656 INFO L225 Difference]: With dead ends: 7063 [2021-12-16 03:54:28,656 INFO L226 Difference]: Without dead ends: 3537 [2021-12-16 03:54:28,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:54:28,665 INFO L933 BasicCegarLoop]: 1192 mSDtfsCounter, 1 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:54:28,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2381 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:54:28,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2021-12-16 03:54:28,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 3533. [2021-12-16 03:54:28,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3533 states, 2607 states have (on average 1.2474108170310703) internal successors, (3252), 2662 states have internal predecessors, (3252), 734 states have call successors, (734), 194 states have call predecessors, (734), 191 states have return successors, (770), 696 states have call predecessors, (770), 722 states have call successors, (770) [2021-12-16 03:54:28,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3533 states to 3533 states and 4756 transitions. [2021-12-16 03:54:28,779 INFO L78 Accepts]: Start accepts. Automaton has 3533 states and 4756 transitions. Word has length 176 [2021-12-16 03:54:28,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:54:28,780 INFO L470 AbstractCegarLoop]: Abstraction has 3533 states and 4756 transitions. [2021-12-16 03:54:28,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-16 03:54:28,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3533 states and 4756 transitions. [2021-12-16 03:54:28,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-16 03:54:28,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:54:28,782 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:54:28,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 03:54:28,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:54:29,000 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:54:29,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:54:29,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2077072147, now seen corresponding path program 1 times [2021-12-16 03:54:29,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:54:29,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048030374] [2021-12-16 03:54:29,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:54:29,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:54:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 03:54:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-16 03:54:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 03:54:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:54:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:54:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-16 03:54:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 03:54:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:54:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 03:54:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 03:54:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 03:54:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-16 03:54:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-16 03:54:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:54:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-16 03:54:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-16 03:54:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,284 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-16 03:54:29,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:54:29,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048030374] [2021-12-16 03:54:29,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048030374] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:54:29,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532812770] [2021-12-16 03:54:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:54:29,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:54:29,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:54:29,300 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:54:29,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 03:54:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:54:29,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2350 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 03:54:29,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:54:30,100 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-16 03:54:30,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:54:30,348 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-16 03:54:30,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532812770] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:54:30,349 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 03:54:30,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2021-12-16 03:54:30,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411220825] [2021-12-16 03:54:30,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 03:54:30,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 03:54:30,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:54:30,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 03:54:30,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:54:30,351 INFO L87 Difference]: Start difference. First operand 3533 states and 4756 transitions. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 7 states have internal predecessors, (150), 5 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26)