./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.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 ed18c341b13cb38f54b1bbde59f9cd5a73bcebd88430e5620ebca0060f7baed5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 12:35:14,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 12:35:14,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 12:35:14,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 12:35:14,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 12:35:14,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 12:35:14,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 12:35:14,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 12:35:14,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 12:35:14,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 12:35:14,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 12:35:14,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 12:35:14,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 12:35:14,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 12:35:14,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 12:35:14,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 12:35:14,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 12:35:14,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 12:35:14,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 12:35:14,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 12:35:14,974 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 12:35:14,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 12:35:14,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 12:35:14,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 12:35:14,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 12:35:14,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 12:35:14,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 12:35:14,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 12:35:14,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 12:35:14,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 12:35:14,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 12:35:14,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 12:35:14,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 12:35:14,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 12:35:14,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 12:35:14,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 12:35:14,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 12:35:14,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 12:35:14,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 12:35:14,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 12:35:14,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 12:35:14,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 12:35:14,994 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 12:35:15,014 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 12:35:15,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 12:35:15,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 12:35:15,019 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 12:35:15,019 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 12:35:15,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 12:35:15,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 12:35:15,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 12:35:15,021 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 12:35:15,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 12:35:15,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 12:35:15,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 12:35:15,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 12:35:15,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 12:35:15,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 12:35:15,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 12:35:15,022 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 12:35:15,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 12:35:15,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 12:35:15,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 12:35:15,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 12:35:15,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:35:15,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 12:35:15,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 12:35:15,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 12:35:15,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 12:35:15,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 12:35:15,025 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 12:35:15,025 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 12:35:15,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 12:35:15,025 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed18c341b13cb38f54b1bbde59f9cd5a73bcebd88430e5620ebca0060f7baed5 [2022-07-12 12:35:15,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 12:35:15,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 12:35:15,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 12:35:15,317 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 12:35:15,317 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 12:35:15,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2022-07-12 12:35:15,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c34dbb007/6d8a276840c949ce90d2828b270a2b42/FLAG36d8d23a8 [2022-07-12 12:35:15,951 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 12:35:15,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2022-07-12 12:35:15,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c34dbb007/6d8a276840c949ce90d2828b270a2b42/FLAG36d8d23a8 [2022-07-12 12:35:16,083 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c34dbb007/6d8a276840c949ce90d2828b270a2b42 [2022-07-12 12:35:16,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 12:35:16,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 12:35:16,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 12:35:16,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 12:35:16,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 12:35:16,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:35:16" (1/1) ... [2022-07-12 12:35:16,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55c9e4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:35:16, skipping insertion in model container [2022-07-12 12:35:16,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:35:16" (1/1) ... [2022-07-12 12:35:16,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 12:35:16,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:35:17,040 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i[198800,198813] [2022-07-12 12:35:17,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:35:17,720 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 12:35:17,855 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i[198800,198813] [2022-07-12 12:35:18,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:35:18,112 INFO L208 MainTranslator]: Completed translation [2022-07-12 12:35:18,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:35:18 WrapperNode [2022-07-12 12:35:18,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 12:35:18,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 12:35:18,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 12:35:18,115 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 12:35:18,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:35:18" (1/1) ... [2022-07-12 12:35:18,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:35:18" (1/1) ... [2022-07-12 12:35:18,298 INFO L137 Inliner]: procedures = 375, calls = 2229, calls flagged for inlining = 193, calls inlined = 191, statements flattened = 6492 [2022-07-12 12:35:18,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 12:35:18,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 12:35:18,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 12:35:18,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 12:35:18,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:35:18" (1/1) ... [2022-07-12 12:35:18,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:35:18" (1/1) ... [2022-07-12 12:35:18,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:35:18" (1/1) ... [2022-07-12 12:35:18,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:35:18" (1/1) ... [2022-07-12 12:35:18,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:35:18" (1/1) ... [2022-07-12 12:35:18,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:35:18" (1/1) ... [2022-07-12 12:35:18,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:35:18" (1/1) ... [2022-07-12 12:35:18,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 12:35:18,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 12:35:18,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 12:35:18,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 12:35:18,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:35:18" (1/1) ... [2022-07-12 12:35:18,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:35:18,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:35:18,614 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) [2022-07-12 12:35:18,632 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 [2022-07-12 12:35:18,682 INFO L130 BoogieDeclarations]: Found specification of procedure sk_unattached_filter_destroy [2022-07-12 12:35:18,685 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_unattached_filter_destroy [2022-07-12 12:35:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure find_comp_entry [2022-07-12 12:35:18,685 INFO L138 BoogieDeclarations]: Found implementation of procedure find_comp_entry [2022-07-12 12:35:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-07-12 12:35:18,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-07-12 12:35:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_bh [2022-07-12 12:35:18,686 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_bh [2022-07-12 12:35:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-07-12 12:35:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_bh [2022-07-12 12:35:18,686 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_bh [2022-07-12 12:35:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 12:35:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 12:35:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-12 12:35:18,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-12 12:35:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-07-12 12:35:18,687 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-07-12 12:35:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-07-12 12:35:18,687 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-07-12 12:35:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_xmit_process [2022-07-12 12:35:18,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_xmit_process [2022-07-12 12:35:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_unlink [2022-07-12 12:35:18,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_unlink [2022-07-12 12:35:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_shutdown_interface [2022-07-12 12:35:18,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_shutdown_interface [2022-07-12 12:35:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_interface [2022-07-12 12:35:18,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_interface [2022-07-12 12:35:18,689 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-07-12 12:35:18,689 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-07-12 12:35:18,689 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-12 12:35:18,689 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-12 12:35:18,689 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-12 12:35:18,689 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-12 12:35:18,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 12:35:18,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 12:35:18,703 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock_bh [2022-07-12 12:35:18,703 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock_bh [2022-07-12 12:35:18,704 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_push [2022-07-12 12:35:18,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_push [2022-07-12 12:35:18,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-12 12:35:18,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-12 12:35:18,704 INFO L130 BoogieDeclarations]: Found specification of procedure unit_find [2022-07-12 12:35:18,704 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_find [2022-07-12 12:35:18,704 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-12 12:35:18,704 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-12 12:35:18,705 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2022-07-12 12:35:18,705 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2022-07-12 12:35:18,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 12:35:18,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 12:35:18,705 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be16 [2022-07-12 12:35:18,705 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be16 [2022-07-12 12:35:18,705 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-07-12 12:35:18,706 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-07-12 12:35:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-12 12:35:18,706 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-12 12:35:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure init_ppp_file [2022-07-12 12:35:18,706 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ppp_file [2022-07-12 12:35:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 12:35:18,706 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 12:35:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-12 12:35:18,707 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-12 12:35:18,707 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-12 12:35:18,707 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-12 12:35:18,707 INFO L130 BoogieDeclarations]: Found specification of procedure skb_peek [2022-07-12 12:35:18,707 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_peek [2022-07-12 12:35:18,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_19 [2022-07-12 12:35:18,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_19 [2022-07-12 12:35:18,708 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_release [2022-07-12 12:35:18,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_release [2022-07-12 12:35:18,708 INFO L130 BoogieDeclarations]: Found specification of procedure get_filter [2022-07-12 12:35:18,708 INFO L138 BoogieDeclarations]: Found implementation of procedure get_filter [2022-07-12 12:35:18,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 12:35:18,708 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-12 12:35:18,708 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-12 12:35:18,708 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-07-12 12:35:18,709 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-07-12 12:35:18,709 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-07-12 12:35:18,709 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-07-12 12:35:18,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 12:35:18,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-12 12:35:18,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-12 12:35:18,709 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_get_stats64 [2022-07-12 12:35:18,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_get_stats64 [2022-07-12 12:35:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-07-12 12:35:18,710 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-07-12 12:35:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-07-12 12:35:18,710 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-07-12 12:35:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_send_frame [2022-07-12 12:35:18,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_send_frame [2022-07-12 12:35:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-12 12:35:18,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-12 12:35:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 12:35:18,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 12:35:18,711 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_error [2022-07-12 12:35:18,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_error [2022-07-12 12:35:18,711 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_find_unit [2022-07-12 12:35:18,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_find_unit [2022-07-12 12:35:18,711 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-12 12:35:18,711 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-12 12:35:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-12 12:35:18,712 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-12 12:35:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure sk_unattached_filter_create [2022-07-12 12:35:18,712 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_unattached_filter_create [2022-07-12 12:35:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-12 12:35:18,712 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-12 12:35:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-12 12:35:18,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-12 12:35:18,713 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_push [2022-07-12 12:35:18,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_push [2022-07-12 12:35:18,713 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-12 12:35:18,713 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-12 12:35:18,713 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-12 12:35:18,713 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-12 12:35:18,713 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-12 12:35:18,713 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-12 12:35:18,714 INFO L130 BoogieDeclarations]: Found specification of procedure find_compressor [2022-07-12 12:35:18,714 INFO L138 BoogieDeclarations]: Found implementation of procedure find_compressor [2022-07-12 12:35:18,714 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_pernet [2022-07-12 12:35:18,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_pernet [2022-07-12 12:35:18,714 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-12 12:35:18,714 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-12 12:35:18,714 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-12 12:35:18,715 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-12 12:35:18,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-12 12:35:18,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-12 12:35:18,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-12 12:35:18,715 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-12 12:35:18,715 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-12 12:35:18,715 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pernet_device [2022-07-12 12:35:18,715 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pernet_device [2022-07-12 12:35:18,716 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-12 12:35:18,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-12 12:35:18,716 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_disconnect_channel [2022-07-12 12:35:18,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_disconnect_channel [2022-07-12 12:35:18,716 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_net_ioctl [2022-07-12 12:35:18,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_net_ioctl [2022-07-12 12:35:18,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-12 12:35:18,716 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock_bh [2022-07-12 12:35:18,717 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock_bh [2022-07-12 12:35:18,717 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-07-12 12:35:18,717 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-07-12 12:35:18,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 12:35:18,717 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-12 12:35:18,717 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-12 12:35:18,717 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2022-07-12 12:35:18,717 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2022-07-12 12:35:18,717 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2022-07-12 12:35:18,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2022-07-12 12:35:18,718 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_exit_net [2022-07-12 12:35:18,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_exit_net [2022-07-12 12:35:18,718 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-07-12 12:35:18,718 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-07-12 12:35:18,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-07-12 12:35:18,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-07-12 12:35:18,718 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2022-07-12 12:35:18,719 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2022-07-12 12:35:18,719 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_do_recv [2022-07-12 12:35:18,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_do_recv [2022-07-12 12:35:18,719 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2022-07-12 12:35:18,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2022-07-12 12:35:18,719 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2022-07-12 12:35:18,719 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2022-07-12 12:35:18,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_16 [2022-07-12 12:35:18,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_16 [2022-07-12 12:35:18,720 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-07-12 12:35:18,720 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-07-12 12:35:18,720 INFO L130 BoogieDeclarations]: Found specification of procedure proto_to_npindex [2022-07-12 12:35:18,720 INFO L138 BoogieDeclarations]: Found implementation of procedure proto_to_npindex [2022-07-12 12:35:18,720 INFO L130 BoogieDeclarations]: Found specification of procedure net_generic [2022-07-12 12:35:18,720 INFO L138 BoogieDeclarations]: Found implementation of procedure net_generic [2022-07-12 12:35:18,720 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-07-12 12:35:18,720 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-07-12 12:35:18,721 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-12 12:35:18,721 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-12 12:35:18,721 INFO L130 BoogieDeclarations]: Found specification of procedure unit_put [2022-07-12 12:35:18,733 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_put [2022-07-12 12:35:18,743 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_nonmp_frame [2022-07-12 12:35:18,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_nonmp_frame [2022-07-12 12:35:18,744 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2022-07-12 12:35:18,744 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2022-07-12 12:35:18,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 12:35:18,744 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-12 12:35:18,744 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-12 12:35:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-07-12 12:35:18,745 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-07-12 12:35:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-07-12 12:35:18,745 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-07-12 12:35:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_write [2022-07-12 12:35:18,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_write [2022-07-12 12:35:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 12:35:18,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 12:35:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_closed [2022-07-12 12:35:18,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_closed [2022-07-12 12:35:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_open [2022-07-12 12:35:18,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_open [2022-07-12 12:35:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 12:35:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-07-12 12:35:18,746 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-07-12 12:35:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-07-12 12:35:18,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-07-12 12:35:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 12:35:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-07-12 12:35:18,747 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-07-12 12:35:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 12:35:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-07-12 12:35:18,747 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-07-12 12:35:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-12 12:35:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2022-07-12 12:35:18,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2022-07-12 12:35:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-12 12:35:18,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-12 12:35:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-07-12 12:35:18,748 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-07-12 12:35:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-07-12 12:35:18,748 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-07-12 12:35:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2022-07-12 12:35:18,748 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2022-07-12 12:35:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-07-12 12:35:18,749 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-07-12 12:35:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-12 12:35:18,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-12 12:35:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-07-12 12:35:18,749 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-07-12 12:35:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_long_read [2022-07-12 12:35:18,749 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_long_read [2022-07-12 12:35:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-07-12 12:35:18,750 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-07-12 12:35:18,750 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-12 12:35:18,750 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-12 12:35:18,750 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-12 12:35:18,750 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-12 12:35:18,750 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_register_net_channel [2022-07-12 12:35:18,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_register_net_channel [2022-07-12 12:35:18,750 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-12 12:35:18,750 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-12 12:35:18,751 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_mp_explode [2022-07-12 12:35:18,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_mp_explode [2022-07-12 12:35:18,751 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_may_pull [2022-07-12 12:35:18,751 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_may_pull [2022-07-12 12:35:18,751 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-12 12:35:18,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-12 12:35:18,751 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ioctl [2022-07-12 12:35:18,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ioctl [2022-07-12 12:35:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_peek [2022-07-12 12:35:18,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_peek [2022-07-12 12:35:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_44 [2022-07-12 12:35:18,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_44 [2022-07-12 12:35:18,754 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_poll [2022-07-12 12:35:18,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_poll [2022-07-12 12:35:18,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 12:35:18,754 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_channel [2022-07-12 12:35:18,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_channel [2022-07-12 12:35:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-07-12 12:35:18,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-07-12 12:35:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 12:35:18,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 12:35:18,773 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-12 12:35:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-12 12:35:18,773 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-07-12 12:35:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-07-12 12:35:19,476 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 12:35:19,479 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 12:35:19,881 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-12 12:35:22,469 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 12:35:22,491 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 12:35:22,491 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-12 12:35:22,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:35:22 BoogieIcfgContainer [2022-07-12 12:35:22,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 12:35:22,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 12:35:22,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 12:35:22,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 12:35:22,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:35:16" (1/3) ... [2022-07-12 12:35:22,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc8ddaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:35:22, skipping insertion in model container [2022-07-12 12:35:22,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:35:18" (2/3) ... [2022-07-12 12:35:22,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc8ddaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:35:22, skipping insertion in model container [2022-07-12 12:35:22,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:35:22" (3/3) ... [2022-07-12 12:35:22,503 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2022-07-12 12:35:22,513 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 12:35:22,514 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 12:35:22,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 12:35:22,576 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@5f962ea, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@72e91888 [2022-07-12 12:35:22,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 12:35:22,583 INFO L276 IsEmpty]: Start isEmpty. Operand has 2188 states, 1551 states have (on average 1.3836234687298516) internal successors, (2146), 1610 states have internal predecessors, (2146), 515 states have call successors, (515), 121 states have call predecessors, (515), 120 states have return successors, (510), 497 states have call predecessors, (510), 510 states have call successors, (510) [2022-07-12 12:35:22,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 12:35:22,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:35:22,596 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:35:22,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:35:22,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:35:22,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1665950622, now seen corresponding path program 1 times [2022-07-12 12:35:22,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:35:22,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581047599] [2022-07-12 12:35:22,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:35:22,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:35:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:22,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:35:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:22,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:35:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:22,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:35:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:23,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:35:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:23,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:35:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:23,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:35:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:23,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:35:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:23,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:35:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:23,093 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-12 12:35:23,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:35:23,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581047599] [2022-07-12 12:35:23,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581047599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:35:23,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:35:23,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:35:23,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442206676] [2022-07-12 12:35:23,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:35:23,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:35:23,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:35:23,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:35:23,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:35:23,129 INFO L87 Difference]: Start difference. First operand has 2188 states, 1551 states have (on average 1.3836234687298516) internal successors, (2146), 1610 states have internal predecessors, (2146), 515 states have call successors, (515), 121 states have call predecessors, (515), 120 states have return successors, (510), 497 states have call predecessors, (510), 510 states have call successors, (510) Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-12 12:35:30,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:35:30,406 INFO L93 Difference]: Finished difference Result 7161 states and 11104 transitions. [2022-07-12 12:35:30,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:35:30,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 69 [2022-07-12 12:35:30,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:35:30,501 INFO L225 Difference]: With dead ends: 7161 [2022-07-12 12:35:30,501 INFO L226 Difference]: Without dead ends: 4931 [2022-07-12 12:35:30,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:35:30,522 INFO L413 NwaCegarLoop]: 3833 mSDtfsCounter, 4557 mSDsluCounter, 9284 mSDsCounter, 0 mSdLazyCounter, 6019 mSolverCounterSat, 1584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4930 SdHoareTripleChecker+Valid, 13117 SdHoareTripleChecker+Invalid, 7603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1584 IncrementalHoareTripleChecker+Valid, 6019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-07-12 12:35:30,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4930 Valid, 13117 Invalid, 7603 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1584 Valid, 6019 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-07-12 12:35:30,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2022-07-12 12:35:30,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 4433. [2022-07-12 12:35:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4433 states, 3151 states have (on average 1.365915582354808) internal successors, (4304), 3264 states have internal predecessors, (4304), 1025 states have call successors, (1025), 239 states have call predecessors, (1025), 256 states have return successors, (1194), 1010 states have call predecessors, (1194), 1024 states have call successors, (1194) [2022-07-12 12:35:30,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4433 states to 4433 states and 6523 transitions. [2022-07-12 12:35:30,806 INFO L78 Accepts]: Start accepts. Automaton has 4433 states and 6523 transitions. Word has length 69 [2022-07-12 12:35:30,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:35:30,808 INFO L495 AbstractCegarLoop]: Abstraction has 4433 states and 6523 transitions. [2022-07-12 12:35:30,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-12 12:35:30,808 INFO L276 IsEmpty]: Start isEmpty. Operand 4433 states and 6523 transitions. [2022-07-12 12:35:30,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-12 12:35:30,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:35:30,820 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:35:30,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 12:35:30,821 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:35:30,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:35:30,821 INFO L85 PathProgramCache]: Analyzing trace with hash 953309695, now seen corresponding path program 1 times [2022-07-12 12:35:30,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:35:30,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650212114] [2022-07-12 12:35:30,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:35:30,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:35:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:30,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:35:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:30,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:35:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:31,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:35:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:31,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:35:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:31,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:35:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:31,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:35:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:31,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:35:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:31,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:35:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:31,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 12:35:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:31,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 12:35:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:31,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 12:35:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:31,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:35:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-12 12:35:31,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:35:31,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650212114] [2022-07-12 12:35:31,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650212114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:35:31,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:35:31,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:35:31,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428184806] [2022-07-12 12:35:31,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:35:31,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:35:31,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:35:31,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:35:31,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:35:31,110 INFO L87 Difference]: Start difference. First operand 4433 states and 6523 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 12:35:40,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:35:40,927 INFO L93 Difference]: Finished difference Result 14739 states and 22490 transitions. [2022-07-12 12:35:40,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:35:40,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2022-07-12 12:35:40,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:35:40,989 INFO L225 Difference]: With dead ends: 14739 [2022-07-12 12:35:40,989 INFO L226 Difference]: Without dead ends: 10326 [2022-07-12 12:35:41,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:35:41,008 INFO L413 NwaCegarLoop]: 3719 mSDtfsCounter, 6656 mSDsluCounter, 4994 mSDsCounter, 0 mSdLazyCounter, 5105 mSolverCounterSat, 3336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6989 SdHoareTripleChecker+Valid, 8713 SdHoareTripleChecker+Invalid, 8441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3336 IncrementalHoareTripleChecker+Valid, 5105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:35:41,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6989 Valid, 8713 Invalid, 8441 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3336 Valid, 5105 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-07-12 12:35:41,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10326 states. [2022-07-12 12:35:41,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10326 to 8839. [2022-07-12 12:35:41,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8839 states, 6245 states have (on average 1.355004003202562) internal successors, (8462), 6489 states have internal predecessors, (8462), 2045 states have call successors, (2045), 467 states have call predecessors, (2045), 548 states have return successors, (2783), 2053 states have call predecessors, (2783), 2044 states have call successors, (2783) [2022-07-12 12:35:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8839 states to 8839 states and 13290 transitions. [2022-07-12 12:35:41,440 INFO L78 Accepts]: Start accepts. Automaton has 8839 states and 13290 transitions. Word has length 105 [2022-07-12 12:35:41,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:35:41,441 INFO L495 AbstractCegarLoop]: Abstraction has 8839 states and 13290 transitions. [2022-07-12 12:35:41,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 12:35:41,442 INFO L276 IsEmpty]: Start isEmpty. Operand 8839 states and 13290 transitions. [2022-07-12 12:35:41,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-12 12:35:41,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:35:41,447 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:35:41,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 12:35:41,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:35:41,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:35:41,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1261801524, now seen corresponding path program 1 times [2022-07-12 12:35:41,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:35:41,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473042777] [2022-07-12 12:35:41,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:35:41,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:35:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:41,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:35:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:41,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:35:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:41,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:35:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:41,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:35:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:41,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:35:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:41,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:35:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:41,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:35:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:41,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:35:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:41,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 12:35:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:41,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:35:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:41,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:35:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:41,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:35:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-12 12:35:41,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:35:41,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473042777] [2022-07-12 12:35:41,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473042777] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:35:41,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:35:41,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:35:41,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180531456] [2022-07-12 12:35:41,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:35:41,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:35:41,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:35:41,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:35:41,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:35:41,712 INFO L87 Difference]: Start difference. First operand 8839 states and 13290 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 12:35:45,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-12 12:35:52,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:35:52,858 INFO L93 Difference]: Finished difference Result 26650 states and 40851 transitions. [2022-07-12 12:35:52,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:35:52,858 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2022-07-12 12:35:52,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:35:53,061 INFO L225 Difference]: With dead ends: 26650 [2022-07-12 12:35:53,062 INFO L226 Difference]: Without dead ends: 17831 [2022-07-12 12:35:53,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:35:53,115 INFO L413 NwaCegarLoop]: 4662 mSDtfsCounter, 4234 mSDsluCounter, 5953 mSDsCounter, 0 mSdLazyCounter, 4965 mSolverCounterSat, 2072 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4533 SdHoareTripleChecker+Valid, 10615 SdHoareTripleChecker+Invalid, 7038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2072 IncrementalHoareTripleChecker+Valid, 4965 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-07-12 12:35:53,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4533 Valid, 10615 Invalid, 7038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2072 Valid, 4965 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-07-12 12:35:53,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17831 states. [2022-07-12 12:35:53,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17831 to 14968. [2022-07-12 12:35:53,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14968 states, 10597 states have (on average 1.3512314806077192) internal successors, (14319), 11047 states have internal predecessors, (14319), 3359 states have call successors, (3359), 865 states have call predecessors, (3359), 1011 states have return successors, (4661), 3369 states have call predecessors, (4661), 3358 states have call successors, (4661) [2022-07-12 12:35:53,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14968 states to 14968 states and 22339 transitions. [2022-07-12 12:35:53,852 INFO L78 Accepts]: Start accepts. Automaton has 14968 states and 22339 transitions. Word has length 108 [2022-07-12 12:35:53,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:35:53,853 INFO L495 AbstractCegarLoop]: Abstraction has 14968 states and 22339 transitions. [2022-07-12 12:35:53,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 12:35:53,854 INFO L276 IsEmpty]: Start isEmpty. Operand 14968 states and 22339 transitions. [2022-07-12 12:35:53,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-12 12:35:53,870 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:35:53,870 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:35:53,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 12:35:53,870 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:35:53,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:35:53,870 INFO L85 PathProgramCache]: Analyzing trace with hash -599238503, now seen corresponding path program 1 times [2022-07-12 12:35:53,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:35:53,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51445362] [2022-07-12 12:35:53,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:35:53,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:35:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:54,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:35:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:54,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:35:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:54,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:35:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:54,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:35:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:54,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:35:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:54,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:35:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:54,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:35:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:54,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:35:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:54,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 12:35:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:54,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:35:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:54,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 12:35:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:54,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 12:35:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:54,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:35:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:54,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:35:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:54,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:35:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:35:54,151 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2022-07-12 12:35:54,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:35:54,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51445362] [2022-07-12 12:35:54,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51445362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:35:54,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:35:54,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:35:54,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134019588] [2022-07-12 12:35:54,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:35:54,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:35:54,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:35:54,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:35:54,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:35:54,153 INFO L87 Difference]: Start difference. First operand 14968 states and 22339 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 12:36:00,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:36:00,495 INFO L93 Difference]: Finished difference Result 32759 states and 49872 transitions. [2022-07-12 12:36:00,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:36:00,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2022-07-12 12:36:00,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:36:00,613 INFO L225 Difference]: With dead ends: 32759 [2022-07-12 12:36:00,613 INFO L226 Difference]: Without dead ends: 17811 [2022-07-12 12:36:00,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:36:00,673 INFO L413 NwaCegarLoop]: 2931 mSDtfsCounter, 3946 mSDsluCounter, 3625 mSDsCounter, 0 mSdLazyCounter, 3179 mSolverCounterSat, 1119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4278 SdHoareTripleChecker+Valid, 6556 SdHoareTripleChecker+Invalid, 4298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1119 IncrementalHoareTripleChecker+Valid, 3179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-12 12:36:00,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4278 Valid, 6556 Invalid, 4298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1119 Valid, 3179 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-12 12:36:00,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17811 states. [2022-07-12 12:36:01,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17811 to 14968. [2022-07-12 12:36:01,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14968 states, 10597 states have (on average 1.3504765499669718) internal successors, (14311), 11047 states have internal predecessors, (14311), 3359 states have call successors, (3359), 865 states have call predecessors, (3359), 1011 states have return successors, (4661), 3369 states have call predecessors, (4661), 3358 states have call successors, (4661) [2022-07-12 12:36:01,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14968 states to 14968 states and 22331 transitions. [2022-07-12 12:36:01,375 INFO L78 Accepts]: Start accepts. Automaton has 14968 states and 22331 transitions. Word has length 142 [2022-07-12 12:36:01,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:36:01,376 INFO L495 AbstractCegarLoop]: Abstraction has 14968 states and 22331 transitions. [2022-07-12 12:36:01,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 12:36:01,377 INFO L276 IsEmpty]: Start isEmpty. Operand 14968 states and 22331 transitions. [2022-07-12 12:36:01,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-12 12:36:01,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:36:01,382 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:36:01,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 12:36:01,383 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:36:01,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:36:01,384 INFO L85 PathProgramCache]: Analyzing trace with hash -410587588, now seen corresponding path program 1 times [2022-07-12 12:36:01,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:36:01,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987135412] [2022-07-12 12:36:01,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:01,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:36:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:01,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:01,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:36:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:01,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:36:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:01,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:36:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:01,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:36:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:01,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:36:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:01,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:36:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:01,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:36:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:01,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 12:36:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:01,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:36:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:01,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 12:36:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:01,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 12:36:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:01,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 12:36:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:01,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:01,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:01,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:01,669 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-12 12:36:01,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:36:01,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987135412] [2022-07-12 12:36:01,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987135412] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:36:01,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:36:01,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:36:01,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778914230] [2022-07-12 12:36:01,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:36:01,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:36:01,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:36:01,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:36:01,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:36:01,671 INFO L87 Difference]: Start difference. First operand 14968 states and 22331 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-12 12:36:10,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:36:10,320 INFO L93 Difference]: Finished difference Result 40582 states and 61940 transitions. [2022-07-12 12:36:10,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:36:10,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2022-07-12 12:36:10,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:36:10,450 INFO L225 Difference]: With dead ends: 40582 [2022-07-12 12:36:10,450 INFO L226 Difference]: Without dead ends: 25634 [2022-07-12 12:36:10,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:36:10,499 INFO L413 NwaCegarLoop]: 4009 mSDtfsCounter, 5176 mSDsluCounter, 3756 mSDsCounter, 0 mSdLazyCounter, 3189 mSolverCounterSat, 2474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5486 SdHoareTripleChecker+Valid, 7765 SdHoareTripleChecker+Invalid, 5663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2474 IncrementalHoareTripleChecker+Valid, 3189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:36:10,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5486 Valid, 7765 Invalid, 5663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2474 Valid, 3189 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-07-12 12:36:10,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25634 states. [2022-07-12 12:36:11,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25634 to 21365. [2022-07-12 12:36:11,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21365 states, 15153 states have (on average 1.348115884643305) internal successors, (20428), 15817 states have internal predecessors, (20428), 4721 states have call successors, (4721), 1275 states have call predecessors, (4721), 1490 states have return successors, (6617), 4733 states have call predecessors, (6617), 4720 states have call successors, (6617) [2022-07-12 12:36:11,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21365 states to 21365 states and 31766 transitions. [2022-07-12 12:36:11,437 INFO L78 Accepts]: Start accepts. Automaton has 21365 states and 31766 transitions. Word has length 149 [2022-07-12 12:36:11,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:36:11,438 INFO L495 AbstractCegarLoop]: Abstraction has 21365 states and 31766 transitions. [2022-07-12 12:36:11,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-12 12:36:11,438 INFO L276 IsEmpty]: Start isEmpty. Operand 21365 states and 31766 transitions. [2022-07-12 12:36:11,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-12 12:36:11,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:36:11,442 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:36:11,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 12:36:11,442 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:36:11,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:36:11,442 INFO L85 PathProgramCache]: Analyzing trace with hash -43905274, now seen corresponding path program 1 times [2022-07-12 12:36:11,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:36:11,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760909811] [2022-07-12 12:36:11,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:11,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:36:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:11,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:11,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:36:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:11,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:36:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:11,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:36:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:11,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:36:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:11,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:36:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:11,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:36:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:11,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:36:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:11,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 12:36:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:11,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:36:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:11,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 12:36:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:11,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 12:36:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:11,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 12:36:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:11,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:11,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:11,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:11,751 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-12 12:36:11,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:36:11,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760909811] [2022-07-12 12:36:11,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760909811] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:36:11,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:36:11,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 12:36:11,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735138201] [2022-07-12 12:36:11,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:36:11,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 12:36:11,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:36:11,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 12:36:11,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 12:36:11,754 INFO L87 Difference]: Start difference. First operand 21365 states and 31766 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 7 states have internal predecessors, (83), 2 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-12 12:36:22,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:36:22,581 INFO L93 Difference]: Finished difference Result 47091 states and 73359 transitions. [2022-07-12 12:36:22,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 12:36:22,581 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 7 states have internal predecessors, (83), 2 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 1 states have call successors, (16) Word has length 149 [2022-07-12 12:36:22,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:36:22,720 INFO L225 Difference]: With dead ends: 47091 [2022-07-12 12:36:22,721 INFO L226 Difference]: Without dead ends: 25746 [2022-07-12 12:36:22,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2022-07-12 12:36:22,786 INFO L413 NwaCegarLoop]: 2999 mSDtfsCounter, 964 mSDsluCounter, 18668 mSDsCounter, 0 mSdLazyCounter, 11840 mSolverCounterSat, 638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 21667 SdHoareTripleChecker+Invalid, 12478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 11840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:36:22,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 21667 Invalid, 12478 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [638 Valid, 11840 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-07-12 12:36:22,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25746 states. [2022-07-12 12:36:23,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25746 to 21476. [2022-07-12 12:36:23,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21476 states, 15237 states have (on average 1.3467874253461967) internal successors, (20521), 15913 states have internal predecessors, (20521), 4721 states have call successors, (4721), 1275 states have call predecessors, (4721), 1517 states have return successors, (6912), 4748 states have call predecessors, (6912), 4720 states have call successors, (6912) [2022-07-12 12:36:23,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21476 states to 21476 states and 32154 transitions. [2022-07-12 12:36:23,769 INFO L78 Accepts]: Start accepts. Automaton has 21476 states and 32154 transitions. Word has length 149 [2022-07-12 12:36:23,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:36:23,770 INFO L495 AbstractCegarLoop]: Abstraction has 21476 states and 32154 transitions. [2022-07-12 12:36:23,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 7 states have internal predecessors, (83), 2 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-12 12:36:23,770 INFO L276 IsEmpty]: Start isEmpty. Operand 21476 states and 32154 transitions. [2022-07-12 12:36:23,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-12 12:36:23,775 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:36:23,775 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:36:23,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 12:36:23,776 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:36:23,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:36:23,778 INFO L85 PathProgramCache]: Analyzing trace with hash -277307092, now seen corresponding path program 1 times [2022-07-12 12:36:23,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:36:23,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463818758] [2022-07-12 12:36:23,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:23,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:36:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:23,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:23,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:36:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:23,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:36:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:23,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:36:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:23,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:36:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:23,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:36:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:23,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:36:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:23,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:36:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:23,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 12:36:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:23,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:36:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:23,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 12:36:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:23,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 12:36:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:23,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 12:36:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:24,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:24,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:24,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:24,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 12:36:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:24,120 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-12 12:36:24,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:36:24,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463818758] [2022-07-12 12:36:24,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463818758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:36:24,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:36:24,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 12:36:24,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071943130] [2022-07-12 12:36:24,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:36:24,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 12:36:24,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:36:24,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 12:36:24,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:36:24,122 INFO L87 Difference]: Start difference. First operand 21476 states and 32154 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 12:36:32,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:36:32,002 INFO L93 Difference]: Finished difference Result 52292 states and 84323 transitions. [2022-07-12 12:36:32,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 12:36:32,003 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2022-07-12 12:36:32,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:36:32,181 INFO L225 Difference]: With dead ends: 52292 [2022-07-12 12:36:32,181 INFO L226 Difference]: Without dead ends: 30836 [2022-07-12 12:36:32,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-07-12 12:36:32,268 INFO L413 NwaCegarLoop]: 3049 mSDtfsCounter, 2379 mSDsluCounter, 9319 mSDsCounter, 0 mSdLazyCounter, 6514 mSolverCounterSat, 1626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2622 SdHoareTripleChecker+Valid, 12368 SdHoareTripleChecker+Invalid, 8140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1626 IncrementalHoareTripleChecker+Valid, 6514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:36:32,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2622 Valid, 12368 Invalid, 8140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1626 Valid, 6514 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-07-12 12:36:32,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30836 states. [2022-07-12 12:36:33,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30836 to 21575. [2022-07-12 12:36:33,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21575 states, 15290 states have (on average 1.3477436232831916) internal successors, (20607), 15985 states have internal predecessors, (20607), 4763 states have call successors, (4763), 1275 states have call predecessors, (4763), 1521 states have return successors, (6855), 4778 states have call predecessors, (6855), 4762 states have call successors, (6855) [2022-07-12 12:36:33,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21575 states to 21575 states and 32225 transitions. [2022-07-12 12:36:33,236 INFO L78 Accepts]: Start accepts. Automaton has 21575 states and 32225 transitions. Word has length 155 [2022-07-12 12:36:33,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:36:33,237 INFO L495 AbstractCegarLoop]: Abstraction has 21575 states and 32225 transitions. [2022-07-12 12:36:33,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 12:36:33,237 INFO L276 IsEmpty]: Start isEmpty. Operand 21575 states and 32225 transitions. [2022-07-12 12:36:33,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-12 12:36:33,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:36:33,241 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:36:33,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 12:36:33,241 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:36:33,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:36:33,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1754202023, now seen corresponding path program 1 times [2022-07-12 12:36:33,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:36:33,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501500096] [2022-07-12 12:36:33,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:33,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:36:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:36:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:36:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:36:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:36:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:36:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:36:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:36:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 12:36:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:36:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 12:36:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 12:36:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 12:36:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:36:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:36:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:36:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,774 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-07-12 12:36:33,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:36:33,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501500096] [2022-07-12 12:36:33,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501500096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:36:33,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:36:33,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 12:36:33,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017918] [2022-07-12 12:36:33,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:36:33,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 12:36:33,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:36:33,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 12:36:33,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-12 12:36:33,776 INFO L87 Difference]: Start difference. First operand 21575 states and 32225 transitions. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 12:36:45,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:36:45,462 INFO L93 Difference]: Finished difference Result 47349 states and 73671 transitions. [2022-07-12 12:36:45,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 12:36:45,463 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 2 states have call successors, (20) Word has length 170 [2022-07-12 12:36:45,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:36:45,624 INFO L225 Difference]: With dead ends: 47349 [2022-07-12 12:36:45,639 INFO L226 Difference]: Without dead ends: 25794 [2022-07-12 12:36:45,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-12 12:36:45,769 INFO L413 NwaCegarLoop]: 3016 mSDtfsCounter, 948 mSDsluCounter, 20911 mSDsCounter, 0 mSdLazyCounter, 12984 mSolverCounterSat, 636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 23927 SdHoareTripleChecker+Invalid, 13620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 636 IncrementalHoareTripleChecker+Valid, 12984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-07-12 12:36:45,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 23927 Invalid, 13620 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [636 Valid, 12984 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2022-07-12 12:36:45,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25794 states. [2022-07-12 12:36:46,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25794 to 21589. [2022-07-12 12:36:46,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21589 states, 15304 states have (on average 1.3461186617877678) internal successors, (20601), 15992 states have internal predecessors, (20601), 4763 states have call successors, (4763), 1275 states have call predecessors, (4763), 1521 states have return successors, (6826), 4785 states have call predecessors, (6826), 4762 states have call successors, (6826) [2022-07-12 12:36:46,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21589 states to 21589 states and 32190 transitions. [2022-07-12 12:36:46,717 INFO L78 Accepts]: Start accepts. Automaton has 21589 states and 32190 transitions. Word has length 170 [2022-07-12 12:36:46,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:36:46,718 INFO L495 AbstractCegarLoop]: Abstraction has 21589 states and 32190 transitions. [2022-07-12 12:36:46,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 12:36:46,718 INFO L276 IsEmpty]: Start isEmpty. Operand 21589 states and 32190 transitions. [2022-07-12 12:36:46,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-12 12:36:46,754 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:36:46,755 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:36:46,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 12:36:46,755 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:36:46,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:36:46,756 INFO L85 PathProgramCache]: Analyzing trace with hash 729024575, now seen corresponding path program 1 times [2022-07-12 12:36:46,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:36:46,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548487941] [2022-07-12 12:36:46,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:46,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:36:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:36:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:36:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:36:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:36:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:36:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:36:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:36:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 12:36:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:36:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 12:36:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 12:36:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:47,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 12:36:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:47,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:47,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:47,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:47,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:36:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:47,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:36:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:47,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:47,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:36:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:47,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:36:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:47,091 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-07-12 12:36:47,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:36:47,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548487941] [2022-07-12 12:36:47,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548487941] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:36:47,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250843011] [2022-07-12 12:36:47,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:47,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:36:47,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:36:47,094 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:36:47,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 12:36:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:47,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 2669 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 12:36:47,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:36:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-07-12 12:36:47,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:36:47,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250843011] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:36:47,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:36:47,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-12 12:36:47,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521596808] [2022-07-12 12:36:47,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:36:47,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:36:47,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:36:47,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:36:47,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-12 12:36:47,965 INFO L87 Difference]: Start difference. First operand 21589 states and 32190 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 12:36:48,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:36:48,916 INFO L93 Difference]: Finished difference Result 43185 states and 64369 transitions. [2022-07-12 12:36:48,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:36:48,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 176 [2022-07-12 12:36:48,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:36:49,015 INFO L225 Difference]: With dead ends: 43185 [2022-07-12 12:36:49,015 INFO L226 Difference]: Without dead ends: 21554 [2022-07-12 12:36:49,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-12 12:36:49,082 INFO L413 NwaCegarLoop]: 3363 mSDtfsCounter, 2980 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2980 SdHoareTripleChecker+Valid, 3675 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:36:49,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2980 Valid, 3675 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 12:36:49,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21554 states. [2022-07-12 12:36:49,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21554 to 21533. [2022-07-12 12:36:49,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21533 states, 15257 states have (on average 1.3466605492560793) internal successors, (20546), 15940 states have internal predecessors, (20546), 4749 states have call successors, (4749), 1280 states have call predecessors, (4749), 1526 states have return successors, (6782), 4771 states have call predecessors, (6782), 4748 states have call successors, (6782) [2022-07-12 12:36:50,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21533 states to 21533 states and 32077 transitions. [2022-07-12 12:36:50,038 INFO L78 Accepts]: Start accepts. Automaton has 21533 states and 32077 transitions. Word has length 176 [2022-07-12 12:36:50,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:36:50,039 INFO L495 AbstractCegarLoop]: Abstraction has 21533 states and 32077 transitions. [2022-07-12 12:36:50,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 12:36:50,039 INFO L276 IsEmpty]: Start isEmpty. Operand 21533 states and 32077 transitions. [2022-07-12 12:36:50,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 12:36:50,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:36:50,045 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:36:50,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 12:36:50,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:36:50,267 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:36:50,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:36:50,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1418660964, now seen corresponding path program 1 times [2022-07-12 12:36:50,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:36:50,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443628869] [2022-07-12 12:36:50,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:50,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:36:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:50,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:50,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:36:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:50,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:36:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:50,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:36:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:50,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:36:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:50,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:36:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:50,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:36:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:50,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:36:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:50,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 12:36:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:50,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:36:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:50,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 12:36:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:50,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 12:36:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:50,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 12:36:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:51,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:51,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:51,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:51,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:36:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:51,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:36:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:51,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:51,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:36:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:51,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:36:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:51,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-12 12:36:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:51,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-12 12:36:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:51,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 12:36:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:51,910 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-07-12 12:36:51,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:36:51,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443628869] [2022-07-12 12:36:51,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443628869] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:36:51,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005477003] [2022-07-12 12:36:51,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:51,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:36:51,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:36:51,928 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:36:51,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 12:36:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:52,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-12 12:36:52,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:36:53,069 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-07-12 12:36:53,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:36:53,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005477003] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:36:53,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:36:53,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [26] total 29 [2022-07-12 12:36:53,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457144980] [2022-07-12 12:36:53,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:36:53,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:36:53,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:36:53,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:36:53,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2022-07-12 12:36:53,072 INFO L87 Difference]: Start difference. First operand 21533 states and 32077 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-12 12:36:53,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:36:53,881 INFO L93 Difference]: Finished difference Result 42822 states and 63829 transitions. [2022-07-12 12:36:53,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:36:53,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 190 [2022-07-12 12:36:53,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:36:53,982 INFO L225 Difference]: With dead ends: 42822 [2022-07-12 12:36:53,982 INFO L226 Difference]: Without dead ends: 21528 [2022-07-12 12:36:54,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=838, Unknown=0, NotChecked=0, Total=930 [2022-07-12 12:36:54,196 INFO L413 NwaCegarLoop]: 3109 mSDtfsCounter, 3 mSDsluCounter, 9316 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12425 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:36:54,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 12425 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 12:36:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21528 states. [2022-07-12 12:36:54,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21528 to 21528. [2022-07-12 12:36:54,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21528 states, 15254 states have (on average 1.3466631703159826) internal successors, (20542), 15937 states have internal predecessors, (20542), 4748 states have call successors, (4748), 1279 states have call predecessors, (4748), 1525 states have return successors, (6781), 4770 states have call predecessors, (6781), 4747 states have call successors, (6781) [2022-07-12 12:36:54,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21528 states to 21528 states and 32071 transitions. [2022-07-12 12:36:54,970 INFO L78 Accepts]: Start accepts. Automaton has 21528 states and 32071 transitions. Word has length 190 [2022-07-12 12:36:54,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:36:54,971 INFO L495 AbstractCegarLoop]: Abstraction has 21528 states and 32071 transitions. [2022-07-12 12:36:54,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-12 12:36:54,971 INFO L276 IsEmpty]: Start isEmpty. Operand 21528 states and 32071 transitions. [2022-07-12 12:36:54,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-12 12:36:54,976 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:36:54,977 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:36:55,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 12:36:55,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-12 12:36:55,199 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:36:55,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:36:55,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1539380712, now seen corresponding path program 1 times [2022-07-12 12:36:55,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:36:55,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626760120] [2022-07-12 12:36:55,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:55,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:36:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:55,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:55,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:36:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:55,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:36:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:55,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:36:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:55,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:36:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:55,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:36:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:55,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:36:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:55,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:36:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:55,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 12:36:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:55,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:36:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:55,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 12:36:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:55,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 12:36:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:55,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:55,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 12:36:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:55,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 12:36:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:56,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:56,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:56,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:56,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:36:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:56,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:36:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:56,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:56,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:36:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:56,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:36:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:56,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-12 12:36:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:56,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-12 12:36:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:56,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-12 12:36:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:56,663 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-07-12 12:36:56,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:36:56,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626760120] [2022-07-12 12:36:56,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626760120] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:36:56,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460241527] [2022-07-12 12:36:56,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:56,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:36:56,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:36:56,666 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:36:56,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 12:36:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 2821 conjuncts, 116 conjunts are in the unsatisfiable core [2022-07-12 12:36:57,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:36:57,536 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-12 12:36:57,611 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-12 12:36:57,654 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-12 12:36:57,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-12 12:36:57,773 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-12 12:36:57,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-12 12:36:57,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-12 12:36:57,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-12 12:36:58,020 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 12:36:58,021 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-07-12 12:36:58,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-12 12:36:58,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-12 12:36:58,582 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 12:36:58,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-12 12:36:58,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-12 12:36:58,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-12 12:36:59,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 12:36:59,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 12:36:59,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 12:36:59,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 12:36:59,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 12:36:59,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 12:37:00,121 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 12:37:00,121 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-12 12:37:00,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 12:37:00,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 12:37:00,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 12:37:00,373 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 12:37:00,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2022-07-12 12:37:00,384 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 12:37:00,385 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-07-12 12:37:00,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-12 12:37:00,545 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-07-12 12:37:00,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:37:00,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460241527] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:37:00,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 12:37:00,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21] total 44 [2022-07-12 12:37:00,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809087261] [2022-07-12 12:37:00,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 12:37:00,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-12 12:37:00,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:37:00,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-12 12:37:00,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1896, Unknown=15, NotChecked=0, Total=2070 [2022-07-12 12:37:00,949 INFO L87 Difference]: Start difference. First operand 21528 states and 32071 transitions. Second operand has 44 states, 44 states have (on average 4.818181818181818) internal successors, (212), 33 states have internal predecessors, (212), 15 states have call successors, (52), 12 states have call predecessors, (52), 16 states have return successors, (51), 20 states have call predecessors, (51), 15 states have call successors, (51) [2022-07-12 12:37:20,800 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []