./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 91e04004830698389104523fd95ec19013bffc6ed609cfb90049e6e93edb2bb3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 01:36:06,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 01:36:06,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 01:36:06,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 01:36:06,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 01:36:06,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 01:36:06,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 01:36:06,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 01:36:06,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 01:36:06,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 01:36:06,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 01:36:06,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 01:36:06,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 01:36:06,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 01:36:06,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 01:36:06,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 01:36:06,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 01:36:06,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 01:36:06,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 01:36:06,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 01:36:06,620 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 01:36:06,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 01:36:06,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 01:36:06,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 01:36:06,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 01:36:06,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 01:36:06,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 01:36:06,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 01:36:06,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 01:36:06,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 01:36:06,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 01:36:06,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 01:36:06,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 01:36:06,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 01:36:06,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 01:36:06,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 01:36:06,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 01:36:06,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 01:36:06,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 01:36:06,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 01:36:06,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 01:36:06,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 01:36:06,636 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-20 01:36:06,660 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 01:36:06,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 01:36:06,661 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 01:36:06,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 01:36:06,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 01:36:06,662 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 01:36:06,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 01:36:06,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 01:36:06,662 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 01:36:06,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 01:36:06,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 01:36:06,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 01:36:06,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 01:36:06,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 01:36:06,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 01:36:06,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 01:36:06,664 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 01:36:06,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 01:36:06,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 01:36:06,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 01:36:06,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 01:36:06,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 01:36:06,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 01:36:06,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 01:36:06,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 01:36:06,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 01:36:06,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 01:36:06,666 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 01:36:06,667 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 01:36:06,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 01:36:06,667 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91e04004830698389104523fd95ec19013bffc6ed609cfb90049e6e93edb2bb3 [2022-07-20 01:36:06,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 01:36:06,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 01:36:06,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 01:36:06,874 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 01:36:06,874 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 01:36:06,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2022-07-20 01:36:06,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ecbfca38/869e35a65972405ba485d8be68e3069e/FLAG118c561d7 [2022-07-20 01:36:07,461 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 01:36:07,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2022-07-20 01:36:07,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ecbfca38/869e35a65972405ba485d8be68e3069e/FLAG118c561d7 [2022-07-20 01:36:07,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ecbfca38/869e35a65972405ba485d8be68e3069e [2022-07-20 01:36:07,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 01:36:07,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 01:36:07,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 01:36:07,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 01:36:07,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 01:36:07,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:36:07" (1/1) ... [2022-07-20 01:36:07,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@291fa565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:36:07, skipping insertion in model container [2022-07-20 01:36:07,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:36:07" (1/1) ... [2022-07-20 01:36:07,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 01:36:08,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 01:36:08,731 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i[143316,143329] [2022-07-20 01:36:08,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 01:36:08,765 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 01:36:08,948 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i[143316,143329] [2022-07-20 01:36:08,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 01:36:09,009 INFO L208 MainTranslator]: Completed translation [2022-07-20 01:36:09,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:36:09 WrapperNode [2022-07-20 01:36:09,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 01:36:09,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 01:36:09,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 01:36:09,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 01:36:09,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:36:09" (1/1) ... [2022-07-20 01:36:09,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:36:09" (1/1) ... [2022-07-20 01:36:09,106 INFO L137 Inliner]: procedures = 142, calls = 664, calls flagged for inlining = 62, calls inlined = 59, statements flattened = 1993 [2022-07-20 01:36:09,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 01:36:09,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 01:36:09,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 01:36:09,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 01:36:09,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:36:09" (1/1) ... [2022-07-20 01:36:09,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:36:09" (1/1) ... [2022-07-20 01:36:09,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:36:09" (1/1) ... [2022-07-20 01:36:09,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:36:09" (1/1) ... [2022-07-20 01:36:09,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:36:09" (1/1) ... [2022-07-20 01:36:09,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:36:09" (1/1) ... [2022-07-20 01:36:09,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:36:09" (1/1) ... [2022-07-20 01:36:09,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 01:36:09,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 01:36:09,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 01:36:09,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 01:36:09,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:36:09" (1/1) ... [2022-07-20 01:36:09,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 01:36:09,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 01:36:09,250 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) [2022-07-20 01:36:09,257 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 [2022-07-20 01:36:09,278 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-20 01:36:09,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-20 01:36:09,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-20 01:36:09,279 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-07-20 01:36:09,279 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-07-20 01:36:09,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-20 01:36:09,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-20 01:36:09,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-20 01:36:09,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-20 01:36:09,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-20 01:36:09,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-20 01:36:09,280 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-20 01:36:09,280 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-07-20 01:36:09,280 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-07-20 01:36:09,280 INFO L130 BoogieDeclarations]: Found specification of procedure retry_transmit [2022-07-20 01:36:09,280 INFO L138 BoogieDeclarations]: Found implementation of procedure retry_transmit [2022-07-20 01:36:09,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-20 01:36:09,280 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-20 01:36:09,280 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-20 01:36:09,281 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-20 01:36:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-20 01:36:09,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-20 01:36:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-20 01:36:09,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-20 01:36:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_close [2022-07-20 01:36:09,281 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_close [2022-07-20 01:36:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure remove_msg [2022-07-20 01:36:09,281 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_msg [2022-07-20 01:36:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-07-20 01:36:09,282 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-07-20 01:36:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure task_pid [2022-07-20 01:36:09,282 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pid [2022-07-20 01:36:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-20 01:36:09,282 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-20 01:36:09,282 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unlock [2022-07-20 01:36:09,282 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unlock [2022-07-20 01:36:09,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-20 01:36:09,283 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-20 01:36:09,283 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-20 01:36:09,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-20 01:36:09,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-20 01:36:09,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-20 01:36:09,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-20 01:36:09,284 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-20 01:36:09,284 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-20 01:36:09,284 INFO L130 BoogieDeclarations]: Found specification of procedure add_msg [2022-07-20 01:36:09,284 INFO L138 BoogieDeclarations]: Found implementation of procedure add_msg [2022-07-20 01:36:09,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 01:36:09,284 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-07-20 01:36:09,285 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-07-20 01:36:09,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-20 01:36:09,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-20 01:36:09,285 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-20 01:36:09,285 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-20 01:36:09,285 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_poll [2022-07-20 01:36:09,286 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_poll [2022-07-20 01:36:09,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 01:36:09,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-07-20 01:36:09,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-07-20 01:36:09,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 01:36:09,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 01:36:09,288 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-20 01:36:09,288 INFO L130 BoogieDeclarations]: Found specification of procedure findClient [2022-07-20 01:36:09,288 INFO L138 BoogieDeclarations]: Found implementation of procedure findClient [2022-07-20 01:36:09,288 INFO L130 BoogieDeclarations]: Found specification of procedure put_char [2022-07-20 01:36:09,288 INFO L138 BoogieDeclarations]: Found implementation of procedure put_char [2022-07-20 01:36:09,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 01:36:09,288 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-20 01:36:09,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-20 01:36:09,289 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2022-07-20 01:36:09,289 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2022-07-20 01:36:09,289 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-20 01:36:09,289 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-20 01:36:09,289 INFO L130 BoogieDeclarations]: Found specification of procedure remove_client_block [2022-07-20 01:36:09,289 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_client_block [2022-07-20 01:36:09,290 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-20 01:36:09,290 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-20 01:36:09,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 01:36:09,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-20 01:36:09,290 INFO L130 BoogieDeclarations]: Found specification of procedure on_receive_block [2022-07-20 01:36:09,290 INFO L138 BoogieDeclarations]: Found implementation of procedure on_receive_block [2022-07-20 01:36:09,290 INFO L130 BoogieDeclarations]: Found specification of procedure flush [2022-07-20 01:36:09,290 INFO L138 BoogieDeclarations]: Found implementation of procedure flush [2022-07-20 01:36:09,290 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_set_termios [2022-07-20 01:36:09,291 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_set_termios [2022-07-20 01:36:09,291 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-20 01:36:09,291 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-20 01:36:09,291 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_ioctl [2022-07-20 01:36:09,291 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_ioctl [2022-07-20 01:36:09,291 INFO L130 BoogieDeclarations]: Found specification of procedure remove_from_tx_queue [2022-07-20 01:36:09,291 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_from_tx_queue [2022-07-20 01:36:09,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 01:36:09,292 INFO L130 BoogieDeclarations]: Found specification of procedure tty_lock [2022-07-20 01:36:09,292 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_lock [2022-07-20 01:36:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_transmit [2022-07-20 01:36:09,293 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_transmit [2022-07-20 01:36:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-20 01:36:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 01:36:09,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 01:36:09,654 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 01:36:09,656 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 01:36:09,781 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-20 01:36:12,443 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 01:36:12,456 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 01:36:12,457 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-20 01:36:12,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:36:12 BoogieIcfgContainer [2022-07-20 01:36:12,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 01:36:12,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 01:36:12,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 01:36:12,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 01:36:12,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:36:07" (1/3) ... [2022-07-20 01:36:12,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed90733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:36:12, skipping insertion in model container [2022-07-20 01:36:12,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:36:09" (2/3) ... [2022-07-20 01:36:12,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed90733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:36:12, skipping insertion in model container [2022-07-20 01:36:12,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:36:12" (3/3) ... [2022-07-20 01:36:12,479 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2022-07-20 01:36:12,488 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 01:36:12,489 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 01:36:12,539 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 01:36:12,545 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3b2df827, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6a940a3f [2022-07-20 01:36:12,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 01:36:12,550 INFO L276 IsEmpty]: Start isEmpty. Operand has 754 states, 527 states have (on average 1.396584440227704) internal successors, (736), 563 states have internal predecessors, (736), 185 states have call successors, (185), 41 states have call predecessors, (185), 40 states have return successors, (181), 171 states have call predecessors, (181), 181 states have call successors, (181) [2022-07-20 01:36:12,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-20 01:36:12,561 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:36:12,562 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:36:12,562 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:36:12,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:36:12,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1970092861, now seen corresponding path program 1 times [2022-07-20 01:36:12,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 01:36:12,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205023270] [2022-07-20 01:36:12,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:36:12,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 01:36:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:12,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 01:36:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:12,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-20 01:36:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:36:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:36:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-20 01:36:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:36:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:36:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-20 01:36:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:36:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:36:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-20 01:36:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-20 01:36:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-20 01:36:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:36:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:36:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-20 01:36:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:36:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:36:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-20 01:36:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:36:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:36:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-20 01:36:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-20 01:36:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-20 01:36:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-20 01:36:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-20 01:36:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-20 01:36:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-07-20 01:36:13,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 01:36:13,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205023270] [2022-07-20 01:36:13,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205023270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:36:13,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:36:13,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 01:36:13,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386490491] [2022-07-20 01:36:13,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:36:13,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 01:36:13,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 01:36:13,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 01:36:13,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-20 01:36:13,248 INFO L87 Difference]: Start difference. First operand has 754 states, 527 states have (on average 1.396584440227704) internal successors, (736), 563 states have internal predecessors, (736), 185 states have call successors, (185), 41 states have call predecessors, (185), 40 states have return successors, (181), 171 states have call predecessors, (181), 181 states have call successors, (181) Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-20 01:36:17,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:36:17,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:36:17,969 INFO L93 Difference]: Finished difference Result 2121 states and 3238 transitions. [2022-07-20 01:36:17,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 01:36:17,971 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 173 [2022-07-20 01:36:17,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:36:18,008 INFO L225 Difference]: With dead ends: 2121 [2022-07-20 01:36:18,008 INFO L226 Difference]: Without dead ends: 1345 [2022-07-20 01:36:18,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-20 01:36:18,025 INFO L413 NwaCegarLoop]: 1082 mSDtfsCounter, 1754 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 1407 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 3222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1407 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-20 01:36:18,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1840 Valid, 2525 Invalid, 3222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1407 Valid, 1814 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-07-20 01:36:18,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2022-07-20 01:36:18,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1024. [2022-07-20 01:36:18,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 714 states have (on average 1.380952380952381) internal successors, (986), 761 states have internal predecessors, (986), 245 states have call successors, (245), 65 states have call predecessors, (245), 64 states have return successors, (244), 229 states have call predecessors, (244), 244 states have call successors, (244) [2022-07-20 01:36:18,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1475 transitions. [2022-07-20 01:36:18,156 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1475 transitions. Word has length 173 [2022-07-20 01:36:18,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:36:18,157 INFO L495 AbstractCegarLoop]: Abstraction has 1024 states and 1475 transitions. [2022-07-20 01:36:18,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-20 01:36:18,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1475 transitions. [2022-07-20 01:36:18,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-20 01:36:18,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:36:18,160 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:36:18,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 01:36:18,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:36:18,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:36:18,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1606994607, now seen corresponding path program 1 times [2022-07-20 01:36:18,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 01:36:18,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819657370] [2022-07-20 01:36:18,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:36:18,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 01:36:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 01:36:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-20 01:36:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:36:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:36:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-20 01:36:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:36:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:36:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-20 01:36:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:36:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:36:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-20 01:36:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-20 01:36:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-20 01:36:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:36:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:36:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-20 01:36:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:36:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:36:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-20 01:36:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:36:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:36:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-20 01:36:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-20 01:36:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-20 01:36:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-20 01:36:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-20 01:36:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-20 01:36:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:18,406 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-07-20 01:36:18,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 01:36:18,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819657370] [2022-07-20 01:36:18,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819657370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:36:18,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:36:18,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 01:36:18,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153470262] [2022-07-20 01:36:18,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:36:18,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 01:36:18,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 01:36:18,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 01:36:18,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-20 01:36:18,409 INFO L87 Difference]: Start difference. First operand 1024 states and 1475 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-20 01:36:26,025 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:36:28,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:36:31,180 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:36:33,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:36:35,289 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:36:37,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:36:37,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:36:37,954 INFO L93 Difference]: Finished difference Result 6150 states and 9761 transitions. [2022-07-20 01:36:37,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-20 01:36:37,956 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 184 [2022-07-20 01:36:37,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:36:37,981 INFO L225 Difference]: With dead ends: 6150 [2022-07-20 01:36:37,981 INFO L226 Difference]: Without dead ends: 5175 [2022-07-20 01:36:37,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-07-20 01:36:37,989 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 4875 mSDsluCounter, 4093 mSDsCounter, 0 mSdLazyCounter, 6901 mSolverCounterSat, 2815 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5222 SdHoareTripleChecker+Valid, 5649 SdHoareTripleChecker+Invalid, 9722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2815 IncrementalHoareTripleChecker+Valid, 6901 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2022-07-20 01:36:37,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5222 Valid, 5649 Invalid, 9722 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2815 Valid, 6901 Invalid, 6 Unknown, 0 Unchecked, 19.0s Time] [2022-07-20 01:36:37,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5175 states. [2022-07-20 01:36:38,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5175 to 3977. [2022-07-20 01:36:38,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3977 states, 2786 states have (on average 1.379396984924623) internal successors, (3843), 2967 states have internal predecessors, (3843), 929 states have call successors, (929), 246 states have call predecessors, (929), 261 states have return successors, (1209), 887 states have call predecessors, (1209), 928 states have call successors, (1209) [2022-07-20 01:36:38,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3977 states to 3977 states and 5981 transitions. [2022-07-20 01:36:38,203 INFO L78 Accepts]: Start accepts. Automaton has 3977 states and 5981 transitions. Word has length 184 [2022-07-20 01:36:38,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:36:38,204 INFO L495 AbstractCegarLoop]: Abstraction has 3977 states and 5981 transitions. [2022-07-20 01:36:38,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-20 01:36:38,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3977 states and 5981 transitions. [2022-07-20 01:36:38,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-20 01:36:38,207 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:36:38,207 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:36:38,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 01:36:38,208 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:36:38,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:36:38,208 INFO L85 PathProgramCache]: Analyzing trace with hash -2003332557, now seen corresponding path program 1 times [2022-07-20 01:36:38,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 01:36:38,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186202520] [2022-07-20 01:36:38,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:36:38,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 01:36:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 01:36:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-20 01:36:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:36:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:36:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-20 01:36:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:36:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:36:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-20 01:36:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:36:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:36:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-20 01:36:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-20 01:36:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-20 01:36:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:36:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:36:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-20 01:36:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:36:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:36:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-20 01:36:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:36:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:36:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-20 01:36:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-20 01:36:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-20 01:36:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-20 01:36:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-20 01:36:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-20 01:36:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:36:38,432 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-07-20 01:36:38,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 01:36:38,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186202520] [2022-07-20 01:36:38,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186202520] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:36:38,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:36:38,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 01:36:38,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327541590] [2022-07-20 01:36:38,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:36:38,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 01:36:38,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 01:36:38,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 01:36:38,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-20 01:36:38,434 INFO L87 Difference]: Start difference. First operand 3977 states and 5981 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-20 01:36:45,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:36:48,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:36:50,057 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:36:53,128 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:36:55,166 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:36:57,212 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:36:59,243 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:37:01,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:37:03,752 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:37:03,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:37:03,987 INFO L93 Difference]: Finished difference Result 24341 states and 40850 transitions. [2022-07-20 01:37:03,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-20 01:37:03,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 185 [2022-07-20 01:37:03,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:37:04,097 INFO L225 Difference]: With dead ends: 24341 [2022-07-20 01:37:04,098 INFO L226 Difference]: Without dead ends: 20413 [2022-07-20 01:37:04,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-07-20 01:37:04,127 INFO L413 NwaCegarLoop]: 1474 mSDtfsCounter, 4332 mSDsluCounter, 4343 mSDsCounter, 0 mSdLazyCounter, 7485 mSolverCounterSat, 2794 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4675 SdHoareTripleChecker+Valid, 5817 SdHoareTripleChecker+Invalid, 10288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2794 IncrementalHoareTripleChecker+Valid, 7485 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2022-07-20 01:37:04,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4675 Valid, 5817 Invalid, 10288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2794 Valid, 7485 Invalid, 9 Unknown, 0 Unchecked, 24.7s Time] [2022-07-20 01:37:04,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20413 states. [2022-07-20 01:37:04,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20413 to 15962. [2022-07-20 01:37:05,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15962 states, 11185 states have (on average 1.3722843093428698) internal successors, (15349), 11887 states have internal predecessors, (15349), 3695 states have call successors, (3695), 972 states have call predecessors, (3695), 1081 states have return successors, (6352), 3592 states have call predecessors, (6352), 3694 states have call successors, (6352) [2022-07-20 01:37:05,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15962 states to 15962 states and 25396 transitions. [2022-07-20 01:37:05,127 INFO L78 Accepts]: Start accepts. Automaton has 15962 states and 25396 transitions. Word has length 185 [2022-07-20 01:37:05,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:37:05,128 INFO L495 AbstractCegarLoop]: Abstraction has 15962 states and 25396 transitions. [2022-07-20 01:37:05,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-20 01:37:05,128 INFO L276 IsEmpty]: Start isEmpty. Operand 15962 states and 25396 transitions. [2022-07-20 01:37:05,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-20 01:37:05,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:37:05,129 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:37:05,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 01:37:05,130 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:37:05,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:37:05,130 INFO L85 PathProgramCache]: Analyzing trace with hash -109046439, now seen corresponding path program 1 times [2022-07-20 01:37:05,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 01:37:05,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377166486] [2022-07-20 01:37:05,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:37:05,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 01:37:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 01:37:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-20 01:37:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:37:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:37:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-20 01:37:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:37:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:37:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-20 01:37:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:37:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:37:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-20 01:37:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-20 01:37:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-20 01:37:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:37:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:37:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-20 01:37:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:37:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:37:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-20 01:37:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:37:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:37:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-20 01:37:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-20 01:37:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-20 01:37:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-20 01:37:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-20 01:37:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-20 01:37:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:05,411 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-07-20 01:37:05,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 01:37:05,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377166486] [2022-07-20 01:37:05,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377166486] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:37:05,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:37:05,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 01:37:05,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866159045] [2022-07-20 01:37:05,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:37:05,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 01:37:05,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 01:37:05,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 01:37:05,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-20 01:37:05,414 INFO L87 Difference]: Start difference. First operand 15962 states and 25396 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-20 01:37:13,663 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:37:16,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:37:19,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:37:19,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:37:19,966 INFO L93 Difference]: Finished difference Result 97202 states and 174009 transitions. [2022-07-20 01:37:19,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-20 01:37:19,967 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 186 [2022-07-20 01:37:19,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:37:20,599 INFO L225 Difference]: With dead ends: 97202 [2022-07-20 01:37:20,600 INFO L226 Difference]: Without dead ends: 81289 [2022-07-20 01:37:20,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-07-20 01:37:20,739 INFO L413 NwaCegarLoop]: 1490 mSDtfsCounter, 5349 mSDsluCounter, 4119 mSDsCounter, 0 mSdLazyCounter, 5903 mSolverCounterSat, 3607 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5689 SdHoareTripleChecker+Valid, 5609 SdHoareTripleChecker+Invalid, 9513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3607 IncrementalHoareTripleChecker+Valid, 5903 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-07-20 01:37:20,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5689 Valid, 5609 Invalid, 9513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3607 Valid, 5903 Invalid, 3 Unknown, 0 Unchecked, 12.1s Time] [2022-07-20 01:37:20,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81289 states. [2022-07-20 01:37:23,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81289 to 64482. [2022-07-20 01:37:23,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64482 states, 45180 states have (on average 1.3651394422310756) internal successors, (61677), 47908 states have internal predecessors, (61677), 14832 states have call successors, (14832), 3876 states have call predecessors, (14832), 4469 states have return successors, (33531), 14653 states have call predecessors, (33531), 14831 states have call successors, (33531) [2022-07-20 01:37:24,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64482 states to 64482 states and 110040 transitions. [2022-07-20 01:37:24,170 INFO L78 Accepts]: Start accepts. Automaton has 64482 states and 110040 transitions. Word has length 186 [2022-07-20 01:37:24,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:37:24,171 INFO L495 AbstractCegarLoop]: Abstraction has 64482 states and 110040 transitions. [2022-07-20 01:37:24,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-20 01:37:24,172 INFO L276 IsEmpty]: Start isEmpty. Operand 64482 states and 110040 transitions. [2022-07-20 01:37:24,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-20 01:37:24,173 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:37:24,174 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 01:37:24,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 01:37:24,174 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:37:24,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:37:24,174 INFO L85 PathProgramCache]: Analyzing trace with hash -219858245, now seen corresponding path program 1 times [2022-07-20 01:37:24,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 01:37:24,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386535049] [2022-07-20 01:37:24,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:37:24,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 01:37:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 01:37:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-20 01:37:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:37:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:37:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-20 01:37:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:37:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:37:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-20 01:37:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:37:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:37:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-20 01:37:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-20 01:37:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-20 01:37:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:37:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:37:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-20 01:37:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:37:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:37:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-20 01:37:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:37:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:37:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-20 01:37:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-20 01:37:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-20 01:37:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-20 01:37:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-20 01:37:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-20 01:37:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:37:24,345 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-07-20 01:37:24,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 01:37:24,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386535049] [2022-07-20 01:37:24,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386535049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:37:24,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:37:24,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 01:37:24,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445749486] [2022-07-20 01:37:24,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:37:24,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 01:37:24,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 01:37:24,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 01:37:24,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-20 01:37:24,349 INFO L87 Difference]: Start difference. First operand 64482 states and 110040 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-20 01:37:36,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:37:38,969 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:37:43,677 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:37:47,234 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 01:37:48,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 01:37:48,733 INFO L93 Difference]: Finished difference Result 381680 states and 726628 transitions. [2022-07-20 01:37:48,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-20 01:37:48,734 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 187 [2022-07-20 01:37:48,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 01:37:51,516 INFO L225 Difference]: With dead ends: 381680 [2022-07-20 01:37:51,516 INFO L226 Difference]: Without dead ends: 317247 [2022-07-20 01:37:52,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-07-20 01:37:52,168 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 5132 mSDsluCounter, 3376 mSDsCounter, 0 mSdLazyCounter, 6019 mSolverCounterSat, 3386 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5472 SdHoareTripleChecker+Valid, 4879 SdHoareTripleChecker+Invalid, 9409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3386 IncrementalHoareTripleChecker+Valid, 6019 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-07-20 01:37:52,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5472 Valid, 4879 Invalid, 9409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3386 Valid, 6019 Invalid, 4 Unknown, 0 Unchecked, 14.1s Time] [2022-07-20 01:37:52,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317247 states. [2022-07-20 01:38:04,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317247 to 254730. [2022-07-20 01:38:04,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254730 states, 179256 states have (on average 1.35667425358147) internal successors, (243192), 189161 states have internal predecessors, (243192), 57400 states have call successors, (57400), 15166 states have call predecessors, (57400), 18073 states have return successors, (166006), 58029 states have call predecessors, (166006), 57399 states have call successors, (166006) [2022-07-20 01:38:07,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254730 states to 254730 states and 466598 transitions. [2022-07-20 01:38:07,780 INFO L78 Accepts]: Start accepts. Automaton has 254730 states and 466598 transitions. Word has length 187 [2022-07-20 01:38:07,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 01:38:07,781 INFO L495 AbstractCegarLoop]: Abstraction has 254730 states and 466598 transitions. [2022-07-20 01:38:07,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-20 01:38:07,781 INFO L276 IsEmpty]: Start isEmpty. Operand 254730 states and 466598 transitions. [2022-07-20 01:38:07,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-20 01:38:07,783 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 01:38:07,783 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 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] [2022-07-20 01:38:07,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 01:38:07,783 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 01:38:07,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 01:38:07,784 INFO L85 PathProgramCache]: Analyzing trace with hash 355065517, now seen corresponding path program 1 times [2022-07-20 01:38:07,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 01:38:07,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489211804] [2022-07-20 01:38:07,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 01:38:07,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 01:38:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 01:38:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-20 01:38:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:38:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:38:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-20 01:38:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:38:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:38:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-20 01:38:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:38:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:38:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-20 01:38:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-20 01:38:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-20 01:38:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:38:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:38:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-20 01:38:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:38:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:38:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-20 01:38:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:38:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:38:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-20 01:38:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-20 01:38:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-20 01:38:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-20 01:38:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-20 01:38:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:07,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-20 01:38:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:08,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-20 01:38:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:08,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 01:38:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:08,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 01:38:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 01:38:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2022-07-20 01:38:08,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 01:38:08,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489211804] [2022-07-20 01:38:08,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489211804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 01:38:08,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 01:38:08,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-20 01:38:08,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969526174] [2022-07-20 01:38:08,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 01:38:08,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-20 01:38:08,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 01:38:08,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-20 01:38:08,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-20 01:38:08,020 INFO L87 Difference]: Start difference. First operand 254730 states and 466598 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18)