./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 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-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 0.2.1-dev-0f8a17c [2021-11-17 00:50:40,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 00:50:40,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 00:50:40,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 00:50:40,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 00:50:40,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 00:50:40,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 00:50:40,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 00:50:40,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 00:50:40,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 00:50:40,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 00:50:40,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 00:50:40,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 00:50:40,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 00:50:40,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 00:50:40,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 00:50:40,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 00:50:40,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 00:50:40,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 00:50:40,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 00:50:40,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 00:50:40,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 00:50:40,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 00:50:40,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 00:50:40,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 00:50:40,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 00:50:40,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 00:50:40,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 00:50:40,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 00:50:40,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 00:50:40,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 00:50:40,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 00:50:40,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 00:50:40,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 00:50:40,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 00:50:40,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 00:50:40,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 00:50:40,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 00:50:40,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 00:50:40,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 00:50:40,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 00:50:40,549 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 00:50:40,572 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 00:50:40,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 00:50:40,572 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 00:50:40,573 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 00:50:40,573 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 00:50:40,573 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 00:50:40,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 00:50:40,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 00:50:40,574 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 00:50:40,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 00:50:40,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 00:50:40,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 00:50:40,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 00:50:40,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 00:50:40,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 00:50:40,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 00:50:40,576 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 00:50:40,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 00:50:40,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 00:50:40,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 00:50:40,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 00:50:40,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 00:50:40,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 00:50:40,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 00:50:40,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 00:50:40,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 00:50:40,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 00:50:40,577 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 00:50:40,577 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 00:50:40,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 00:50:40,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 00:50:40,578 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed18c341b13cb38f54b1bbde59f9cd5a73bcebd88430e5620ebca0060f7baed5 [2021-11-17 00:50:40,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 00:50:40,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 00:50:40,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 00:50:40,781 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 00:50:40,781 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 00:50:40,782 INFO L432 ainManager$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 [2021-11-17 00:50:40,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d005b013a/3e88791ce6b04150a9e4853279bce8a8/FLAGdab76fbca [2021-11-17 00:50:41,503 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 00:50:41,503 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 [2021-11-17 00:50:41,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d005b013a/3e88791ce6b04150a9e4853279bce8a8/FLAGdab76fbca [2021-11-17 00:50:41,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d005b013a/3e88791ce6b04150a9e4853279bce8a8 [2021-11-17 00:50:41,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 00:50:41,869 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 00:50:41,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 00:50:41,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 00:50:41,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 00:50:41,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:50:41" (1/1) ... [2021-11-17 00:50:41,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3635275d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:41, skipping insertion in model container [2021-11-17 00:50:41,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:50:41" (1/1) ... [2021-11-17 00:50:41,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 00:50:41,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 00:50:42,993 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] [2021-11-17 00:50:43,594 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 00:50:43,665 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 00:50:43,749 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] [2021-11-17 00:50:43,872 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 00:50:43,970 INFO L208 MainTranslator]: Completed translation [2021-11-17 00:50:43,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:43 WrapperNode [2021-11-17 00:50:43,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 00:50:43,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 00:50:43,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 00:50:43,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 00:50:43,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:43" (1/1) ... [2021-11-17 00:50:44,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:43" (1/1) ... [2021-11-17 00:50:44,229 INFO L137 Inliner]: procedures = 375, calls = 2229, calls flagged for inlining = 193, calls inlined = 191, statements flattened = 6400 [2021-11-17 00:50:44,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 00:50:44,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 00:50:44,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 00:50:44,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 00:50:44,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:43" (1/1) ... [2021-11-17 00:50:44,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:43" (1/1) ... [2021-11-17 00:50:44,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:43" (1/1) ... [2021-11-17 00:50:44,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:43" (1/1) ... [2021-11-17 00:50:44,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:43" (1/1) ... [2021-11-17 00:50:44,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:43" (1/1) ... [2021-11-17 00:50:44,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:43" (1/1) ... [2021-11-17 00:50:44,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 00:50:44,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 00:50:44,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 00:50:44,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 00:50:44,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:43" (1/1) ... [2021-11-17 00:50:44,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 00:50:44,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:50:44,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-17 00:50:44,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-17 00:50:44,499 INFO L130 BoogieDeclarations]: Found specification of procedure sk_unattached_filter_destroy [2021-11-17 00:50:44,499 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_unattached_filter_destroy [2021-11-17 00:50:44,500 INFO L130 BoogieDeclarations]: Found specification of procedure find_comp_entry [2021-11-17 00:50:44,500 INFO L138 BoogieDeclarations]: Found implementation of procedure find_comp_entry [2021-11-17 00:50:44,500 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-17 00:50:44,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-17 00:50:44,500 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_bh [2021-11-17 00:50:44,500 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_bh [2021-11-17 00:50:44,500 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-17 00:50:44,500 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_bh [2021-11-17 00:50:44,501 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_bh [2021-11-17 00:50:44,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-17 00:50:44,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-17 00:50:44,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 00:50:44,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 00:50:44,501 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-11-17 00:50:44,501 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-11-17 00:50:44,501 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-11-17 00:50:44,502 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-11-17 00:50:44,502 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_xmit_process [2021-11-17 00:50:44,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_xmit_process [2021-11-17 00:50:44,502 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_unlink [2021-11-17 00:50:44,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_unlink [2021-11-17 00:50:44,502 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_shutdown_interface [2021-11-17 00:50:44,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_shutdown_interface [2021-11-17 00:50:44,502 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_interface [2021-11-17 00:50:44,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_interface [2021-11-17 00:50:44,503 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-17 00:50:44,503 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-17 00:50:44,503 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-17 00:50:44,503 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-17 00:50:44,503 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-17 00:50:44,503 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-17 00:50:44,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 00:50:44,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 00:50:44,504 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock_bh [2021-11-17 00:50:44,504 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock_bh [2021-11-17 00:50:44,504 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_push [2021-11-17 00:50:44,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_push [2021-11-17 00:50:44,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-17 00:50:44,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-17 00:50:44,504 INFO L130 BoogieDeclarations]: Found specification of procedure unit_find [2021-11-17 00:50:44,505 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_find [2021-11-17 00:50:44,505 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-17 00:50:44,505 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-17 00:50:44,505 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2021-11-17 00:50:44,505 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2021-11-17 00:50:44,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-17 00:50:44,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-17 00:50:44,505 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be16 [2021-11-17 00:50:44,506 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be16 [2021-11-17 00:50:44,506 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-17 00:50:44,506 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-17 00:50:44,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-17 00:50:44,507 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-17 00:50:44,507 INFO L130 BoogieDeclarations]: Found specification of procedure init_ppp_file [2021-11-17 00:50:44,507 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ppp_file [2021-11-17 00:50:44,508 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-17 00:50:44,508 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-17 00:50:44,508 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-17 00:50:44,508 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-17 00:50:44,509 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-17 00:50:44,509 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-17 00:50:44,509 INFO L130 BoogieDeclarations]: Found specification of procedure skb_peek [2021-11-17 00:50:44,509 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_peek [2021-11-17 00:50:44,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_19 [2021-11-17 00:50:44,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_19 [2021-11-17 00:50:44,509 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_release [2021-11-17 00:50:44,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_release [2021-11-17 00:50:44,509 INFO L130 BoogieDeclarations]: Found specification of procedure get_filter [2021-11-17 00:50:44,510 INFO L138 BoogieDeclarations]: Found implementation of procedure get_filter [2021-11-17 00:50:44,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 00:50:44,510 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-17 00:50:44,510 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-17 00:50:44,510 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2021-11-17 00:50:44,511 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2021-11-17 00:50:44,511 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2021-11-17 00:50:44,511 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2021-11-17 00:50:44,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 00:50:44,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-17 00:50:44,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-17 00:50:44,511 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_get_stats64 [2021-11-17 00:50:44,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_get_stats64 [2021-11-17 00:50:44,512 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-11-17 00:50:44,512 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-11-17 00:50:44,512 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-17 00:50:44,512 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-17 00:50:44,512 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_send_frame [2021-11-17 00:50:44,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_send_frame [2021-11-17 00:50:44,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-17 00:50:44,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-17 00:50:44,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 00:50:44,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 00:50:44,513 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_error [2021-11-17 00:50:44,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_error [2021-11-17 00:50:44,514 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_find_unit [2021-11-17 00:50:44,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_find_unit [2021-11-17 00:50:44,514 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-17 00:50:44,514 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-17 00:50:44,514 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-17 00:50:44,515 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-17 00:50:44,515 INFO L130 BoogieDeclarations]: Found specification of procedure sk_unattached_filter_create [2021-11-17 00:50:44,515 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_unattached_filter_create [2021-11-17 00:50:44,515 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-17 00:50:44,515 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-17 00:50:44,515 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-17 00:50:44,515 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-17 00:50:44,516 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_push [2021-11-17 00:50:44,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_push [2021-11-17 00:50:44,516 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-17 00:50:44,516 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-17 00:50:44,516 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-17 00:50:44,516 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-17 00:50:44,516 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-17 00:50:44,517 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-17 00:50:44,517 INFO L130 BoogieDeclarations]: Found specification of procedure find_compressor [2021-11-17 00:50:44,517 INFO L138 BoogieDeclarations]: Found implementation of procedure find_compressor [2021-11-17 00:50:44,517 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_pernet [2021-11-17 00:50:44,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_pernet [2021-11-17 00:50:44,519 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-17 00:50:44,519 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-17 00:50:44,519 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-17 00:50:44,520 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-17 00:50:44,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-17 00:50:44,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-17 00:50:44,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-17 00:50:44,521 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-17 00:50:44,521 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-17 00:50:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pernet_device [2021-11-17 00:50:44,527 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pernet_device [2021-11-17 00:50:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-17 00:50:44,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-17 00:50:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_disconnect_channel [2021-11-17 00:50:44,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_disconnect_channel [2021-11-17 00:50:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_net_ioctl [2021-11-17 00:50:44,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_net_ioctl [2021-11-17 00:50:44,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-17 00:50:44,528 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock_bh [2021-11-17 00:50:44,528 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock_bh [2021-11-17 00:50:44,528 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-17 00:50:44,528 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-17 00:50:44,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 00:50:44,528 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-17 00:50:44,528 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-17 00:50:44,528 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2021-11-17 00:50:44,528 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2021-11-17 00:50:44,528 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2021-11-17 00:50:44,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2021-11-17 00:50:44,528 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_exit_net [2021-11-17 00:50:44,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_exit_net [2021-11-17 00:50:44,528 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2021-11-17 00:50:44,529 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2021-11-17 00:50:44,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-17 00:50:44,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-17 00:50:44,529 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2021-11-17 00:50:44,529 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2021-11-17 00:50:44,529 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_do_recv [2021-11-17 00:50:44,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_do_recv [2021-11-17 00:50:44,529 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2021-11-17 00:50:44,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2021-11-17 00:50:44,530 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2021-11-17 00:50:44,530 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2021-11-17 00:50:44,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_16 [2021-11-17 00:50:44,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_16 [2021-11-17 00:50:44,530 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-17 00:50:44,530 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-17 00:50:44,530 INFO L130 BoogieDeclarations]: Found specification of procedure proto_to_npindex [2021-11-17 00:50:44,530 INFO L138 BoogieDeclarations]: Found implementation of procedure proto_to_npindex [2021-11-17 00:50:44,530 INFO L130 BoogieDeclarations]: Found specification of procedure net_generic [2021-11-17 00:50:44,531 INFO L138 BoogieDeclarations]: Found implementation of procedure net_generic [2021-11-17 00:50:44,531 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-11-17 00:50:44,531 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-11-17 00:50:44,531 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-17 00:50:44,531 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-17 00:50:44,531 INFO L130 BoogieDeclarations]: Found specification of procedure unit_put [2021-11-17 00:50:44,531 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_put [2021-11-17 00:50:44,531 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_nonmp_frame [2021-11-17 00:50:44,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_nonmp_frame [2021-11-17 00:50:44,532 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2021-11-17 00:50:44,532 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2021-11-17 00:50:44,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 00:50:44,532 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-17 00:50:44,532 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-17 00:50:44,532 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-17 00:50:44,532 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-17 00:50:44,532 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-11-17 00:50:44,533 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-11-17 00:50:44,533 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_write [2021-11-17 00:50:44,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_write [2021-11-17 00:50:44,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 00:50:44,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 00:50:44,533 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_closed [2021-11-17 00:50:44,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_closed [2021-11-17 00:50:44,533 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_open [2021-11-17 00:50:44,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_open [2021-11-17 00:50:44,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 00:50:44,534 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-17 00:50:44,534 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-17 00:50:44,534 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-17 00:50:44,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-17 00:50:44,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 00:50:44,534 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-17 00:50:44,534 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-17 00:50:44,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 00:50:44,535 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-17 00:50:44,535 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-17 00:50:44,535 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-17 00:50:44,535 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2021-11-17 00:50:44,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2021-11-17 00:50:44,535 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 00:50:44,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 00:50:44,535 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-17 00:50:44,535 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-17 00:50:44,536 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-17 00:50:44,536 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-17 00:50:44,536 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2021-11-17 00:50:44,536 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2021-11-17 00:50:44,536 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-17 00:50:44,536 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-17 00:50:44,536 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-17 00:50:44,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-17 00:50:44,536 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-17 00:50:44,537 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-17 00:50:44,537 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_long_read [2021-11-17 00:50:44,537 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_long_read [2021-11-17 00:50:44,537 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-17 00:50:44,537 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-17 00:50:44,537 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-11-17 00:50:44,537 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-11-17 00:50:44,537 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-17 00:50:44,537 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-17 00:50:44,538 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_register_net_channel [2021-11-17 00:50:44,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_register_net_channel [2021-11-17 00:50:44,538 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-17 00:50:44,538 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-17 00:50:44,538 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_mp_explode [2021-11-17 00:50:44,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_mp_explode [2021-11-17 00:50:44,538 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_may_pull [2021-11-17 00:50:44,538 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_may_pull [2021-11-17 00:50:44,538 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-17 00:50:44,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-17 00:50:44,539 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ioctl [2021-11-17 00:50:44,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ioctl [2021-11-17 00:50:44,539 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_peek [2021-11-17 00:50:44,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_peek [2021-11-17 00:50:44,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_44 [2021-11-17 00:50:44,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_44 [2021-11-17 00:50:44,542 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_poll [2021-11-17 00:50:44,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_poll [2021-11-17 00:50:44,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 00:50:44,542 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_channel [2021-11-17 00:50:44,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_channel [2021-11-17 00:50:44,543 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-17 00:50:44,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-17 00:50:44,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 00:50:44,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 00:50:44,544 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-17 00:50:44,545 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-17 00:50:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-17 00:50:44,545 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-17 00:50:45,287 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 00:50:45,289 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 00:50:45,697 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 00:50:48,674 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 00:50:48,695 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 00:50:48,695 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-17 00:50:48,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:50:48 BoogieIcfgContainer [2021-11-17 00:50:48,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 00:50:48,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 00:50:48,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 00:50:48,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 00:50:48,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:50:41" (1/3) ... [2021-11-17 00:50:48,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e7959c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:50:48, skipping insertion in model container [2021-11-17 00:50:48,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:50:43" (2/3) ... [2021-11-17 00:50:48,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e7959c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:50:48, skipping insertion in model container [2021-11-17 00:50:48,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:50:48" (3/3) ... [2021-11-17 00:50:48,704 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 [2021-11-17 00:50:48,707 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 00:50:48,708 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 00:50:48,756 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 00:50:48,761 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-17 00:50:48,762 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 00:50:48,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 2163 states, 1526 states have (on average 1.374180865006553) internal successors, (2097), 1585 states have internal predecessors, (2097), 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) [2021-11-17 00:50:48,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-17 00:50:48,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:50:48,822 INFO L514 BasicCegarLoop]: 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] [2021-11-17 00:50:48,823 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:50:48,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:50:48,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1166428172, now seen corresponding path program 1 times [2021-11-17 00:50:48,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:50:48,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975914912] [2021-11-17 00:50:48,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:50:48,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:50:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:49,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:49,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:50:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:49,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:50:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:49,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:50:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:49,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:50:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:49,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:50:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:49,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:50:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:49,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:50:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:49,345 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-17 00:50:49,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:50:49,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975914912] [2021-11-17 00:50:49,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975914912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:50:49,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:50:49,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:50:49,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407930892] [2021-11-17 00:50:49,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:50:49,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:50:49,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:50:49,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:50:49,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:50:49,384 INFO L87 Difference]: Start difference. First operand has 2163 states, 1526 states have (on average 1.374180865006553) internal successors, (2097), 1585 states have internal predecessors, (2097), 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) [2021-11-17 00:50:56,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:50:56,174 INFO L93 Difference]: Finished difference Result 7078 states and 10935 transitions. [2021-11-17 00:50:56,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 00:50:56,176 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 [2021-11-17 00:50:56,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:50:56,233 INFO L225 Difference]: With dead ends: 7078 [2021-11-17 00:50:56,233 INFO L226 Difference]: Without dead ends: 4873 [2021-11-17 00:50:56,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:50:56,257 INFO L933 BasicCegarLoop]: 3694 mSDtfsCounter, 4522 mSDsluCounter, 10659 mSDsCounter, 0 mSdLazyCounter, 4213 mSolverCounterSat, 1607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4895 SdHoareTripleChecker+Valid, 14353 SdHoareTripleChecker+Invalid, 5820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1607 IncrementalHoareTripleChecker+Valid, 4213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:50:56,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4895 Valid, 14353 Invalid, 5820 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1607 Valid, 4213 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-11-17 00:50:56,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4873 states. [2021-11-17 00:50:56,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4873 to 4383. [2021-11-17 00:50:56,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4383 states, 3101 states have (on average 1.366010964205095) internal successors, (4236), 3214 states have internal predecessors, (4236), 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) [2021-11-17 00:50:56,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4383 states to 4383 states and 6455 transitions. [2021-11-17 00:50:56,530 INFO L78 Accepts]: Start accepts. Automaton has 4383 states and 6455 transitions. Word has length 69 [2021-11-17 00:50:56,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:50:56,531 INFO L470 AbstractCegarLoop]: Abstraction has 4383 states and 6455 transitions. [2021-11-17 00:50:56,531 INFO L471 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) [2021-11-17 00:50:56,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4383 states and 6455 transitions. [2021-11-17 00:50:56,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-17 00:50:56,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:50:56,542 INFO L514 BasicCegarLoop]: 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] [2021-11-17 00:50:56,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 00:50:56,542 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:50:56,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:50:56,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1147589655, now seen corresponding path program 1 times [2021-11-17 00:50:56,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:50:56,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781860902] [2021-11-17 00:50:56,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:50:56,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:50:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:56,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:50:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:56,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:50:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:56,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:50:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:56,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:50:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:56,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:50:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:56,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:50:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:56,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:50:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:56,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:50:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:56,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 00:50:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:56,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-17 00:50:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:56,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:50:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:56,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:50:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:50:56,833 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-17 00:50:56,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:50:56,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781860902] [2021-11-17 00:50:56,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781860902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:50:56,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:50:56,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 00:50:56,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224054215] [2021-11-17 00:50:56,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:50:56,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:50:56,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:50:56,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:50:56,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:50:56,838 INFO L87 Difference]: Start difference. First operand 4383 states and 6455 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) [2021-11-17 00:50:59,520 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:08,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:51:08,361 INFO L93 Difference]: Finished difference Result 14573 states and 22266 transitions. [2021-11-17 00:51:08,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 00:51:08,361 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 [2021-11-17 00:51:08,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:51:08,417 INFO L225 Difference]: With dead ends: 14573 [2021-11-17 00:51:08,417 INFO L226 Difference]: Without dead ends: 10210 [2021-11-17 00:51:08,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:51:08,434 INFO L933 BasicCegarLoop]: 3716 mSDtfsCounter, 6495 mSDsluCounter, 5263 mSDsCounter, 0 mSdLazyCounter, 4711 mSolverCounterSat, 3316 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6831 SdHoareTripleChecker+Valid, 8979 SdHoareTripleChecker+Invalid, 8028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3316 IncrementalHoareTripleChecker+Valid, 4711 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:51:08,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6831 Valid, 8979 Invalid, 8028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3316 Valid, 4711 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2021-11-17 00:51:08,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10210 states. [2021-11-17 00:51:08,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10210 to 8739. [2021-11-17 00:51:08,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8739 states, 6145 states have (on average 1.3549227013832383) internal successors, (8326), 6389 states have internal predecessors, (8326), 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) [2021-11-17 00:51:08,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8739 states to 8739 states and 13154 transitions. [2021-11-17 00:51:08,773 INFO L78 Accepts]: Start accepts. Automaton has 8739 states and 13154 transitions. Word has length 105 [2021-11-17 00:51:08,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:51:08,774 INFO L470 AbstractCegarLoop]: Abstraction has 8739 states and 13154 transitions. [2021-11-17 00:51:08,775 INFO L471 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) [2021-11-17 00:51:08,775 INFO L276 IsEmpty]: Start isEmpty. Operand 8739 states and 13154 transitions. [2021-11-17 00:51:08,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-17 00:51:08,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:51:08,780 INFO L514 BasicCegarLoop]: 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] [2021-11-17 00:51:08,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-17 00:51:08,781 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:51:08,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:51:08,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1215083750, now seen corresponding path program 1 times [2021-11-17 00:51:08,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:51:08,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842348867] [2021-11-17 00:51:08,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:51:08,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:51:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:08,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:51:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:08,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:08,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:08,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:51:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:08,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:08,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:51:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:08,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:51:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:08,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:51:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:08,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:51:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:08,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:51:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:08,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:08,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:08,981 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-11-17 00:51:08,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:51:08,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842348867] [2021-11-17 00:51:08,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842348867] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:51:08,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:51:08,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:51:08,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168964867] [2021-11-17 00:51:08,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:51:08,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:51:08,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:51:08,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:51:08,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:51:08,985 INFO L87 Difference]: Start difference. First operand 8739 states and 13154 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) [2021-11-17 00:51:10,254 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:13,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:23,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:51:23,805 INFO L93 Difference]: Finished difference Result 25654 states and 39179 transitions. [2021-11-17 00:51:23,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 00:51:23,814 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 [2021-11-17 00:51:23,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:51:23,907 INFO L225 Difference]: With dead ends: 25654 [2021-11-17 00:51:23,907 INFO L226 Difference]: Without dead ends: 16935 [2021-11-17 00:51:23,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:51:23,943 INFO L933 BasicCegarLoop]: 4577 mSDtfsCounter, 3096 mSDsluCounter, 7839 mSDsCounter, 0 mSdLazyCounter, 5935 mSolverCounterSat, 1125 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3375 SdHoareTripleChecker+Valid, 12416 SdHoareTripleChecker+Invalid, 7061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1125 IncrementalHoareTripleChecker+Valid, 5935 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:51:23,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3375 Valid, 12416 Invalid, 7061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1125 Valid, 5935 Invalid, 1 Unknown, 0 Unchecked, 14.2s Time] [2021-11-17 00:51:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16935 states. [2021-11-17 00:51:24,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16935 to 14784. [2021-11-17 00:51:24,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14784 states, 10413 states have (on average 1.3509075194468454) internal successors, (14067), 10863 states have internal predecessors, (14067), 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) [2021-11-17 00:51:24,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14784 states to 14784 states and 22087 transitions. [2021-11-17 00:51:24,526 INFO L78 Accepts]: Start accepts. Automaton has 14784 states and 22087 transitions. Word has length 108 [2021-11-17 00:51:24,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:51:24,526 INFO L470 AbstractCegarLoop]: Abstraction has 14784 states and 22087 transitions. [2021-11-17 00:51:24,526 INFO L471 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) [2021-11-17 00:51:24,526 INFO L276 IsEmpty]: Start isEmpty. Operand 14784 states and 22087 transitions. [2021-11-17 00:51:24,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-17 00:51:24,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:51:24,535 INFO L514 BasicCegarLoop]: 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] [2021-11-17 00:51:24,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-17 00:51:24,536 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:51:24,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:51:24,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1577830905, now seen corresponding path program 1 times [2021-11-17 00:51:24,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:51:24,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722328562] [2021-11-17 00:51:24,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:51:24,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:51:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:24,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:51:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:24,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:24,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:24,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:51:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:24,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:24,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:51:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:24,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:51:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:24,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:51:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:24,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-17 00:51:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:24,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 00:51:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:24,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-17 00:51:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:24,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-17 00:51:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:24,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:51:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:24,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:24,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:24,770 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-17 00:51:24,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:51:24,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722328562] [2021-11-17 00:51:24,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722328562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:51:24,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:51:24,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:51:24,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598826103] [2021-11-17 00:51:24,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:51:24,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:51:24,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:51:24,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:51:24,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:51:24,773 INFO L87 Difference]: Start difference. First operand 14784 states and 22087 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) [2021-11-17 00:51:26,734 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:29,075 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:35,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:51:35,050 INFO L93 Difference]: Finished difference Result 31679 states and 48084 transitions. [2021-11-17 00:51:35,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 00:51:35,051 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 [2021-11-17 00:51:35,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:51:35,201 INFO L225 Difference]: With dead ends: 31679 [2021-11-17 00:51:35,201 INFO L226 Difference]: Without dead ends: 16915 [2021-11-17 00:51:35,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:51:35,250 INFO L933 BasicCegarLoop]: 2896 mSDtfsCounter, 3780 mSDsluCounter, 3550 mSDsCounter, 0 mSdLazyCounter, 3061 mSolverCounterSat, 1052 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4109 SdHoareTripleChecker+Valid, 6446 SdHoareTripleChecker+Invalid, 4114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1052 IncrementalHoareTripleChecker+Valid, 3061 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-17 00:51:35,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4109 Valid, 6446 Invalid, 4114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1052 Valid, 3061 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2021-11-17 00:51:35,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16915 states. [2021-11-17 00:51:35,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16915 to 14784. [2021-11-17 00:51:35,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14784 states, 10413 states have (on average 1.3501392490156534) internal successors, (14059), 10863 states have internal predecessors, (14059), 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) [2021-11-17 00:51:35,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14784 states to 14784 states and 22079 transitions. [2021-11-17 00:51:35,887 INFO L78 Accepts]: Start accepts. Automaton has 14784 states and 22079 transitions. Word has length 142 [2021-11-17 00:51:35,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:51:35,888 INFO L470 AbstractCegarLoop]: Abstraction has 14784 states and 22079 transitions. [2021-11-17 00:51:35,888 INFO L471 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) [2021-11-17 00:51:35,888 INFO L276 IsEmpty]: Start isEmpty. Operand 14784 states and 22079 transitions. [2021-11-17 00:51:35,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-17 00:51:35,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:51:35,893 INFO L514 BasicCegarLoop]: 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] [2021-11-17 00:51:35,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-17 00:51:35,893 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:51:35,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:51:35,894 INFO L85 PathProgramCache]: Analyzing trace with hash 179241227, now seen corresponding path program 1 times [2021-11-17 00:51:35,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:51:35,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994721425] [2021-11-17 00:51:35,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:51:35,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:51:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:36,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:51:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:36,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:36,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:36,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:51:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:36,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:36,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:51:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:36,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:51:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:36,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:51:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:36,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-17 00:51:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:36,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 00:51:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:36,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-17 00:51:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:36,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-17 00:51:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:36,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-17 00:51:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:36,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:51:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:36,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:36,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-11-17 00:51:36,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:51:36,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994721425] [2021-11-17 00:51:36,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994721425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:51:36,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:51:36,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:51:36,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996811341] [2021-11-17 00:51:36,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:51:36,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:51:36,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:51:36,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:51:36,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:51:36,170 INFO L87 Difference]: Start difference. First operand 14784 states and 22079 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) [2021-11-17 00:51:38,193 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:40,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:42,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:51:51,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:51:51,702 INFO L93 Difference]: Finished difference Result 39062 states and 59398 transitions. [2021-11-17 00:51:51,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 00:51:51,703 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 [2021-11-17 00:51:51,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:51:51,825 INFO L225 Difference]: With dead ends: 39062 [2021-11-17 00:51:51,826 INFO L226 Difference]: Without dead ends: 24298 [2021-11-17 00:51:51,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:51:51,880 INFO L933 BasicCegarLoop]: 3952 mSDtfsCounter, 3489 mSDsluCounter, 6852 mSDsCounter, 0 mSdLazyCounter, 5255 mSolverCounterSat, 1319 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3773 SdHoareTripleChecker+Valid, 10804 SdHoareTripleChecker+Invalid, 6576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1319 IncrementalHoareTripleChecker+Valid, 5255 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2021-11-17 00:51:51,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3773 Valid, 10804 Invalid, 6576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1319 Valid, 5255 Invalid, 2 Unknown, 0 Unchecked, 14.7s Time] [2021-11-17 00:51:51,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24298 states. [2021-11-17 00:51:52,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24298 to 21097. [2021-11-17 00:51:52,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21097 states, 14885 states have (on average 1.3476654350016795) internal successors, (20060), 15549 states have internal predecessors, (20060), 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) [2021-11-17 00:51:52,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21097 states to 21097 states and 31398 transitions. [2021-11-17 00:51:52,729 INFO L78 Accepts]: Start accepts. Automaton has 21097 states and 31398 transitions. Word has length 149 [2021-11-17 00:51:52,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:51:52,731 INFO L470 AbstractCegarLoop]: Abstraction has 21097 states and 31398 transitions. [2021-11-17 00:51:52,731 INFO L471 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) [2021-11-17 00:51:52,731 INFO L276 IsEmpty]: Start isEmpty. Operand 21097 states and 31398 transitions. [2021-11-17 00:51:52,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-17 00:51:52,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:51:52,735 INFO L514 BasicCegarLoop]: 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] [2021-11-17 00:51:52,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-17 00:51:52,735 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:51:52,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:51:52,735 INFO L85 PathProgramCache]: Analyzing trace with hash 421842475, now seen corresponding path program 1 times [2021-11-17 00:51:52,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:51:52,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424954753] [2021-11-17 00:51:52,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:51:52,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:51:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:51:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:51:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:51:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:51:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:51:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:51:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:51:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:51:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-17 00:51:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 00:51:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-17 00:51:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-17 00:51:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-17 00:51:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:51:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:52,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:51:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:51:53,004 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-17 00:51:53,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:51:53,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424954753] [2021-11-17 00:51:53,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424954753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:51:53,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:51:53,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-17 00:51:53,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059331010] [2021-11-17 00:51:53,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:51:53,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 00:51:53,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:51:53,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 00:51:53,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:51:53,006 INFO L87 Difference]: Start difference. First operand 21097 states and 31398 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-17 00:51:55,034 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:02,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:52:02,950 INFO L93 Difference]: Finished difference Result 45337 states and 70621 transitions. [2021-11-17 00:52:02,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-17 00:52:02,950 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 1 states have call successors, (16) Word has length 149 [2021-11-17 00:52:02,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:52:03,069 INFO L225 Difference]: With dead ends: 45337 [2021-11-17 00:52:03,069 INFO L226 Difference]: Without dead ends: 24260 [2021-11-17 00:52:03,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-17 00:52:03,153 INFO L933 BasicCegarLoop]: 2933 mSDtfsCounter, 1662 mSDsluCounter, 14963 mSDsCounter, 0 mSdLazyCounter, 5905 mSolverCounterSat, 1316 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1767 SdHoareTripleChecker+Valid, 17896 SdHoareTripleChecker+Invalid, 7222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1316 IncrementalHoareTripleChecker+Valid, 5905 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:52:03,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1767 Valid, 17896 Invalid, 7222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1316 Valid, 5905 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2021-11-17 00:52:03,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24260 states. [2021-11-17 00:52:03,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24260 to 21070. [2021-11-17 00:52:04,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21070 states, 14849 states have (on average 1.3462859451814937) internal successors, (19991), 15519 states have internal predecessors, (19991), 4721 states have call successors, (4721), 1275 states have call predecessors, (4721), 1499 states have return successors, (6688), 4736 states have call predecessors, (6688), 4720 states have call successors, (6688) [2021-11-17 00:52:04,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21070 states to 21070 states and 31400 transitions. [2021-11-17 00:52:04,128 INFO L78 Accepts]: Start accepts. Automaton has 21070 states and 31400 transitions. Word has length 149 [2021-11-17 00:52:04,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:52:04,128 INFO L470 AbstractCegarLoop]: Abstraction has 21070 states and 31400 transitions. [2021-11-17 00:52:04,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-17 00:52:04,128 INFO L276 IsEmpty]: Start isEmpty. Operand 21070 states and 31400 transitions. [2021-11-17 00:52:04,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-17 00:52:04,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:52:04,133 INFO L514 BasicCegarLoop]: 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] [2021-11-17 00:52:04,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-17 00:52:04,133 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:52:04,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:52:04,134 INFO L85 PathProgramCache]: Analyzing trace with hash -2032814841, now seen corresponding path program 1 times [2021-11-17 00:52:04,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:52:04,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831472542] [2021-11-17 00:52:04,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:52:04,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:52:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:04,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:52:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:04,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:04,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:52:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:04,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:52:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:04,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:52:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:04,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:52:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:04,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:52:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:04,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:52:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:04,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-17 00:52:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:04,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 00:52:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:04,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-17 00:52:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:04,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-17 00:52:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:04,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-17 00:52:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:04,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:52:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:04,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:04,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:04,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:52:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:04,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:04,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:04,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:52:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:04,587 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2021-11-17 00:52:04,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:52:04,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831472542] [2021-11-17 00:52:04,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831472542] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:52:04,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921403589] [2021-11-17 00:52:04,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:52:04,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:52:04,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:52:04,590 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:52:04,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-17 00:52:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:05,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 2540 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 00:52:05,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:52:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-11-17 00:52:05,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:52:05,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921403589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:52:05,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:52:05,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 17 [2021-11-17 00:52:05,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346922829] [2021-11-17 00:52:05,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:52:05,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 00:52:05,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:52:05,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 00:52:05,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-11-17 00:52:05,538 INFO L87 Difference]: Start difference. First operand 21070 states and 31400 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-17 00:52:07,559 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:08,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:52:08,284 INFO L93 Difference]: Finished difference Result 42147 states and 62790 transitions. [2021-11-17 00:52:08,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 00:52:08,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 170 [2021-11-17 00:52:08,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:52:08,397 INFO L225 Difference]: With dead ends: 42147 [2021-11-17 00:52:08,397 INFO L226 Difference]: Without dead ends: 21035 [2021-11-17 00:52:08,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-11-17 00:52:08,459 INFO L933 BasicCegarLoop]: 3329 mSDtfsCounter, 2952 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 3641 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-17 00:52:08,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2952 Valid, 3641 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-17 00:52:08,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21035 states. [2021-11-17 00:52:09,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21035 to 21014. [2021-11-17 00:52:09,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21014 states, 14802 states have (on average 1.3468450209431158) internal successors, (19936), 15467 states have internal predecessors, (19936), 4707 states have call successors, (4707), 1280 states have call predecessors, (4707), 1504 states have return successors, (6645), 4722 states have call predecessors, (6645), 4706 states have call successors, (6645) [2021-11-17 00:52:09,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21014 states to 21014 states and 31288 transitions. [2021-11-17 00:52:09,312 INFO L78 Accepts]: Start accepts. Automaton has 21014 states and 31288 transitions. Word has length 170 [2021-11-17 00:52:09,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:52:09,313 INFO L470 AbstractCegarLoop]: Abstraction has 21014 states and 31288 transitions. [2021-11-17 00:52:09,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-17 00:52:09,313 INFO L276 IsEmpty]: Start isEmpty. Operand 21014 states and 31288 transitions. [2021-11-17 00:52:09,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-17 00:52:09,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:52:09,319 INFO L514 BasicCegarLoop]: 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] [2021-11-17 00:52:09,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-17 00:52:09,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:52:09,540 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:52:09,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:52:09,540 INFO L85 PathProgramCache]: Analyzing trace with hash -495753428, now seen corresponding path program 1 times [2021-11-17 00:52:09,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:52:09,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169656750] [2021-11-17 00:52:09,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:52:09,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:52:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:09,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:52:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:09,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:09,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:52:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:09,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:52:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:09,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:52:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:09,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:52:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:09,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:52:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:09,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:52:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:09,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-17 00:52:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:09,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 00:52:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:09,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-17 00:52:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:09,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-17 00:52:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:09,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-17 00:52:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:09,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:52:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:09,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:09,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:10,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:52:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:10,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:10,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:10,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:52:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:10,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 00:52:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:10,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-17 00:52:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:10,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-17 00:52:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2021-11-17 00:52:10,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:52:10,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169656750] [2021-11-17 00:52:10,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169656750] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:52:10,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21854993] [2021-11-17 00:52:10,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:52:10,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:52:10,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:52:10,139 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:52:10,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-17 00:52:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:10,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 2615 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-17 00:52:10,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:52:11,225 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-11-17 00:52:11,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 00:52:11,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21854993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:52:11,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:52:11,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 20 [2021-11-17 00:52:11,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620091512] [2021-11-17 00:52:11,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:52:11,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:52:11,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:52:11,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:52:11,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2021-11-17 00:52:11,228 INFO L87 Difference]: Start difference. First operand 21014 states and 31288 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-17 00:52:12,632 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:13,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:52:13,371 INFO L93 Difference]: Finished difference Result 41784 states and 62251 transitions. [2021-11-17 00:52:13,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 00:52:13,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 184 [2021-11-17 00:52:13,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:52:13,464 INFO L225 Difference]: With dead ends: 41784 [2021-11-17 00:52:13,464 INFO L226 Difference]: Without dead ends: 21009 [2021-11-17 00:52:13,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-11-17 00:52:13,531 INFO L933 BasicCegarLoop]: 3075 mSDtfsCounter, 3 mSDsluCounter, 9214 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12289 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-17 00:52:13,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 12289 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-17 00:52:13,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21009 states. [2021-11-17 00:52:14,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21009 to 21009. [2021-11-17 00:52:14,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21009 states, 14799 states have (on average 1.3468477599837827) internal successors, (19932), 15464 states have internal predecessors, (19932), 4706 states have call successors, (4706), 1279 states have call predecessors, (4706), 1503 states have return successors, (6644), 4721 states have call predecessors, (6644), 4705 states have call successors, (6644) [2021-11-17 00:52:14,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21009 states to 21009 states and 31282 transitions. [2021-11-17 00:52:14,265 INFO L78 Accepts]: Start accepts. Automaton has 21009 states and 31282 transitions. Word has length 184 [2021-11-17 00:52:14,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:52:14,266 INFO L470 AbstractCegarLoop]: Abstraction has 21009 states and 31282 transitions. [2021-11-17 00:52:14,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-17 00:52:14,266 INFO L276 IsEmpty]: Start isEmpty. Operand 21009 states and 31282 transitions. [2021-11-17 00:52:14,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-17 00:52:14,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:52:14,273 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 3, 3, 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] [2021-11-17 00:52:14,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-17 00:52:14,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-17 00:52:14,491 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:52:14,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:52:14,492 INFO L85 PathProgramCache]: Analyzing trace with hash 833615698, now seen corresponding path program 1 times [2021-11-17 00:52:14,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:52:14,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189371359] [2021-11-17 00:52:14,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:52:14,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:52:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:52:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:52:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:52:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:52:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:52:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:52:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:52:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-17 00:52:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 00:52:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-17 00:52:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 00:52:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 00:52:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-17 00:52:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:52:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:52:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:52:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-11-17 00:52:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-17 00:52:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-17 00:52:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:14,841 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-11-17 00:52:14,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:52:14,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189371359] [2021-11-17 00:52:14,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189371359] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:52:14,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:52:14,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-17 00:52:14,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555682570] [2021-11-17 00:52:14,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:52:14,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-17 00:52:14,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:52:14,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-17 00:52:14,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:52:14,843 INFO L87 Difference]: Start difference. First operand 21009 states and 31282 transitions. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 8 states have internal predecessors, (105), 3 states have call successors, (25), 7 states have call predecessors, (25), 4 states have return successors, (24), 5 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-17 00:52:16,870 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:18,949 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:21,032 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:23,115 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:45,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:52:45,479 INFO L93 Difference]: Finished difference Result 50125 states and 79689 transitions. [2021-11-17 00:52:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-17 00:52:45,480 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 8 states have internal predecessors, (105), 3 states have call successors, (25), 7 states have call predecessors, (25), 4 states have return successors, (24), 5 states have call predecessors, (24), 3 states have call successors, (24) Word has length 197 [2021-11-17 00:52:45,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:52:45,619 INFO L225 Difference]: With dead ends: 50125 [2021-11-17 00:52:45,619 INFO L226 Difference]: Without dead ends: 29361 [2021-11-17 00:52:45,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2021-11-17 00:52:45,703 INFO L933 BasicCegarLoop]: 2617 mSDtfsCounter, 3729 mSDsluCounter, 8666 mSDsCounter, 0 mSdLazyCounter, 28294 mSolverCounterSat, 2169 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4106 SdHoareTripleChecker+Valid, 11283 SdHoareTripleChecker+Invalid, 30467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2169 IncrementalHoareTripleChecker+Valid, 28294 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:52:45,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4106 Valid, 11283 Invalid, 30467 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2169 Valid, 28294 Invalid, 4 Unknown, 0 Unchecked, 29.2s Time] [2021-11-17 00:52:45,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29361 states. [2021-11-17 00:52:46,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29361 to 21248. [2021-11-17 00:52:46,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21248 states, 14974 states have (on average 1.3462668625617737) internal successors, (20159), 15657 states have internal predecessors, (20159), 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) [2021-11-17 00:52:46,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21248 states to 21248 states and 31688 transitions. [2021-11-17 00:52:46,713 INFO L78 Accepts]: Start accepts. Automaton has 21248 states and 31688 transitions. Word has length 197 [2021-11-17 00:52:46,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:52:46,713 INFO L470 AbstractCegarLoop]: Abstraction has 21248 states and 31688 transitions. [2021-11-17 00:52:46,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 8 states have internal predecessors, (105), 3 states have call successors, (25), 7 states have call predecessors, (25), 4 states have return successors, (24), 5 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-17 00:52:46,714 INFO L276 IsEmpty]: Start isEmpty. Operand 21248 states and 31688 transitions. [2021-11-17 00:52:46,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-17 00:52:46,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:52:46,720 INFO L514 BasicCegarLoop]: 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] [2021-11-17 00:52:46,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-17 00:52:46,721 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:52:46,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:52:46,721 INFO L85 PathProgramCache]: Analyzing trace with hash 596492432, now seen corresponding path program 1 times [2021-11-17 00:52:46,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:52:46,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885123196] [2021-11-17 00:52:46,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:52:46,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:52:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:47,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:52:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:47,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:47,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:52:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:47,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:52:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:47,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:52:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:47,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:52:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:47,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:52:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:47,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:52:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:47,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-17 00:52:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:47,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 00:52:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:47,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-17 00:52:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:47,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 00:52:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:47,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:47,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 00:52:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:47,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-17 00:52:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:47,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:52:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:47,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:47,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:48,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:52:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:48,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:52:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:48,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:52:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:48,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:52:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-17 00:52:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:48,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-17 00:52:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:48,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-11-17 00:52:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:48,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 00:52:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:48,255 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-11-17 00:52:48,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:52:48,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885123196] [2021-11-17 00:52:48,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885123196] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:52:48,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439941122] [2021-11-17 00:52:48,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:52:48,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:52:48,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:52:48,258 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:52:48,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-17 00:52:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:52:49,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 2721 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-17 00:52:49,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:52:49,961 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-11-17 00:52:49,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:52:51,487 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-11-17 00:52:51,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439941122] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 00:52:51,487 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 00:52:51,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 16, 14] total 50 [2021-11-17 00:52:51,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057095892] [2021-11-17 00:52:51,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 00:52:51,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-17 00:52:51,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:52:51,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-17 00:52:51,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2301, Unknown=0, NotChecked=0, Total=2450 [2021-11-17 00:52:51,490 INFO L87 Difference]: Start difference. First operand 21248 states and 31688 transitions. Second operand has 50 states, 49 states have (on average 4.530612244897959) internal successors, (222), 34 states have internal predecessors, (222), 12 states have call successors, (56), 7 states have call predecessors, (56), 15 states have return successors, (57), 20 states have call predecessors, (57), 12 states have call successors, (57) [2021-11-17 00:52:53,866 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:52:55,952 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:18,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:20,436 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:22,496 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:24,556 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:26,623 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:28,689 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:30,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:32,813 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:34,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:36,933 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:39,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:41,059 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:43,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:45,188 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:47,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:49,304 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:51,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:53,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:55,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:57,554 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:53:59,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:54:01,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:54:03,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:54:05,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:54:07,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:54:10,673 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:56:28,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:56:28,362 INFO L93 Difference]: Finished difference Result 54804 states and 86927 transitions. [2021-11-17 00:56:28,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-17 00:56:28,366 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 4.530612244897959) internal successors, (222), 34 states have internal predecessors, (222), 12 states have call successors, (56), 7 states have call predecessors, (56), 15 states have return successors, (57), 20 states have call predecessors, (57), 12 states have call successors, (57) Word has length 203 [2021-11-17 00:56:28,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:56:28,548 INFO L225 Difference]: With dead ends: 54804 [2021-11-17 00:56:28,549 INFO L226 Difference]: Without dead ends: 33801 [2021-11-17 00:56:28,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 443 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2078 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=844, Invalid=8662, Unknown=0, NotChecked=0, Total=9506 [2021-11-17 00:56:28,614 INFO L933 BasicCegarLoop]: 2803 mSDtfsCounter, 11586 mSDsluCounter, 23667 mSDsCounter, 0 mSdLazyCounter, 106624 mSolverCounterSat, 7516 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 185.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11891 SdHoareTripleChecker+Valid, 26470 SdHoareTripleChecker+Invalid, 114168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 7516 IncrementalHoareTripleChecker+Valid, 106624 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 209.5s IncrementalHoareTripleChecker+Time [2021-11-17 00:56:28,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11891 Valid, 26470 Invalid, 114168 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [7516 Valid, 106624 Invalid, 28 Unknown, 0 Unchecked, 209.5s Time] [2021-11-17 00:56:28,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33801 states. [2021-11-17 00:56:29,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33801 to 22703. [2021-11-17 00:56:29,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22703 states, 16036 states have (on average 1.3462833624345223) internal successors, (21589), 16755 states have internal predecessors, (21589), 5033 states have call successors, (5033), 1365 states have call predecessors, (5033), 1633 states have return successors, (7217), 5048 states have call predecessors, (7217), 5032 states have call successors, (7217) [2021-11-17 00:56:29,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22703 states to 22703 states and 33839 transitions. [2021-11-17 00:56:29,702 INFO L78 Accepts]: Start accepts. Automaton has 22703 states and 33839 transitions. Word has length 203 [2021-11-17 00:56:29,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:56:29,703 INFO L470 AbstractCegarLoop]: Abstraction has 22703 states and 33839 transitions. [2021-11-17 00:56:29,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 4.530612244897959) internal successors, (222), 34 states have internal predecessors, (222), 12 states have call successors, (56), 7 states have call predecessors, (56), 15 states have return successors, (57), 20 states have call predecessors, (57), 12 states have call successors, (57) [2021-11-17 00:56:29,703 INFO L276 IsEmpty]: Start isEmpty. Operand 22703 states and 33839 transitions. [2021-11-17 00:56:29,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-17 00:56:29,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:56:29,716 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:56:29,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-17 00:56:29,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:56:29,931 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:56:29,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:56:29,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1026021521, now seen corresponding path program 1 times [2021-11-17 00:56:29,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:56:29,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315874088] [2021-11-17 00:56:29,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:56:29,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:56:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:56:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:56:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:56:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:56:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:56:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:56:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:56:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:56:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-17 00:56:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 00:56:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-17 00:56:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 00:56:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 00:56:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-17 00:56:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:56:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-17 00:56:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-17 00:56:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:56:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 00:56:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:56:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:56:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-17 00:56:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-11-17 00:56:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-17 00:56:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-17 00:56:30,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:56:30,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315874088] [2021-11-17 00:56:30,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315874088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:56:30,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:56:30,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-17 00:56:30,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028028924] [2021-11-17 00:56:30,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:56:30,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 00:56:30,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:56:30,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 00:56:30,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-17 00:56:30,255 INFO L87 Difference]: Start difference. First operand 22703 states and 33839 transitions. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (30), 9 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-17 00:56:32,277 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:56:34,360 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:56:35,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:56:39,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-17 00:56:53,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:56:53,293 INFO L93 Difference]: Finished difference Result 43428 states and 70853 transitions. [2021-11-17 00:56:53,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-17 00:56:53,293 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (30), 9 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 218 [2021-11-17 00:56:53,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:56:53,585 INFO L225 Difference]: With dead ends: 43428 [2021-11-17 00:56:53,586 INFO L226 Difference]: Without dead ends: 32333 [2021-11-17 00:56:53,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-17 00:56:53,623 INFO L933 BasicCegarLoop]: 2519 mSDtfsCounter, 7133 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 7936 mSolverCounterSat, 5081 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7448 SdHoareTripleChecker+Valid, 4333 SdHoareTripleChecker+Invalid, 13019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5081 IncrementalHoareTripleChecker+Valid, 7936 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.5s IncrementalHoareTripleChecker+Time [2021-11-17 00:56:53,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7448 Valid, 4333 Invalid, 13019 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5081 Valid, 7936 Invalid, 2 Unknown, 0 Unchecked, 21.5s Time] [2021-11-17 00:56:53,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32333 states. [2021-11-17 00:56:54,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32333 to 22715. [2021-11-17 00:56:54,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22715 states, 16048 states have (on average 1.3460244267198405) internal successors, (21601), 16767 states have internal predecessors, (21601), 5033 states have call successors, (5033), 1365 states have call predecessors, (5033), 1633 states have return successors, (7217), 5048 states have call predecessors, (7217), 5032 states have call successors, (7217) [2021-11-17 00:56:54,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22715 states to 22715 states and 33851 transitions. [2021-11-17 00:56:54,679 INFO L78 Accepts]: Start accepts. Automaton has 22715 states and 33851 transitions. Word has length 218 [2021-11-17 00:56:54,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:56:54,680 INFO L470 AbstractCegarLoop]: Abstraction has 22715 states and 33851 transitions. [2021-11-17 00:56:54,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (30), 9 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-17 00:56:54,680 INFO L276 IsEmpty]: Start isEmpty. Operand 22715 states and 33851 transitions. [2021-11-17 00:56:54,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-17 00:56:54,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:56:54,691 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:56:54,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-17 00:56:54,691 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:56:54,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:56:54,691 INFO L85 PathProgramCache]: Analyzing trace with hash 928948464, now seen corresponding path program 1 times [2021-11-17 00:56:54,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:56:54,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752745646] [2021-11-17 00:56:54,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:56:54,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:56:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:56:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:56:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:56:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:56:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:56:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:56:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:56:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:56:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-17 00:56:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 00:56:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-17 00:56:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 00:56:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 00:56:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-17 00:56:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:56:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-17 00:56:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-17 00:56:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:56:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 00:56:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:54,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:56:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:55,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:56:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:55,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:56:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:55,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-17 00:56:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:55,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-17 00:56:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:55,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-11-17 00:56:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:56:55,094 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-17 00:56:55,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:56:55,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752745646] [2021-11-17 00:56:55,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752745646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:56:55,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:56:55,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-17 00:56:55,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345270622] [2021-11-17 00:56:55,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:56:55,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-17 00:56:55,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:56:55,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-17 00:56:55,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:56:55,097 INFO L87 Difference]: Start difference. First operand 22715 states and 33851 transitions. Second operand has 15 states, 15 states have (on average 8.4) internal successors, (126), 8 states have internal predecessors, (126), 4 states have call successors, (30), 9 states have call predecessors, (30), 4 states have return successors, (29), 6 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-17 00:56:57,120 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:56:58,573 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:57:01,549 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:57:04,135 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:57:08,638 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:57:10,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:57:12,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:58:21,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:58:21,814 INFO L93 Difference]: Finished difference Result 75341 states and 126456 transitions. [2021-11-17 00:58:21,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-17 00:58:21,815 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.4) internal successors, (126), 8 states have internal predecessors, (126), 4 states have call successors, (30), 9 states have call predecessors, (30), 4 states have return successors, (29), 6 states have call predecessors, (29), 4 states have call successors, (29) Word has length 220 [2021-11-17 00:58:21,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:58:22,173 INFO L225 Difference]: With dead ends: 75341 [2021-11-17 00:58:22,173 INFO L226 Difference]: Without dead ends: 53995 [2021-11-17 00:58:22,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=297, Invalid=963, Unknown=0, NotChecked=0, Total=1260 [2021-11-17 00:58:22,288 INFO L933 BasicCegarLoop]: 4417 mSDtfsCounter, 23057 mSDsluCounter, 2935 mSDsCounter, 0 mSdLazyCounter, 44320 mSolverCounterSat, 19332 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23365 SdHoareTripleChecker+Valid, 7352 SdHoareTripleChecker+Invalid, 63658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 19332 IncrementalHoareTripleChecker+Valid, 44320 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.7s IncrementalHoareTripleChecker+Time [2021-11-17 00:58:22,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23365 Valid, 7352 Invalid, 63658 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [19332 Valid, 44320 Invalid, 6 Unknown, 0 Unchecked, 82.7s Time] [2021-11-17 00:58:22,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53995 states. [2021-11-17 00:58:24,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53995 to 37472. [2021-11-17 00:58:24,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37472 states, 26397 states have (on average 1.3436375345683222) internal successors, (35468), 27628 states have internal predecessors, (35468), 8561 states have call successors, (8561), 1943 states have call predecessors, (8561), 2513 states have return successors, (14745), 8742 states have call predecessors, (14745), 8560 states have call successors, (14745) [2021-11-17 00:58:24,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37472 states to 37472 states and 58774 transitions. [2021-11-17 00:58:24,644 INFO L78 Accepts]: Start accepts. Automaton has 37472 states and 58774 transitions. Word has length 220 [2021-11-17 00:58:24,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:58:24,645 INFO L470 AbstractCegarLoop]: Abstraction has 37472 states and 58774 transitions. [2021-11-17 00:58:24,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.4) internal successors, (126), 8 states have internal predecessors, (126), 4 states have call successors, (30), 9 states have call predecessors, (30), 4 states have return successors, (29), 6 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-17 00:58:24,645 INFO L276 IsEmpty]: Start isEmpty. Operand 37472 states and 58774 transitions. [2021-11-17 00:58:24,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-17 00:58:24,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:58:24,659 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:58:24,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-17 00:58:24,659 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:58:24,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:58:24,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1812775508, now seen corresponding path program 1 times [2021-11-17 00:58:24,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:58:24,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65717604] [2021-11-17 00:58:24,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:58:24,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:58:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:25,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:58:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:25,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:58:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:25,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 00:58:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:25,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-17 00:58:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:25,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-17 00:58:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:25,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:58:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:25,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 00:58:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:25,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-17 00:58:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:25,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-17 00:58:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:25,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 00:58:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:25,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-17 00:58:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:25,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-17 00:58:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:25,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:58:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:25,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 00:58:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:25,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-17 00:58:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:27,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 00:58:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:28,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:58:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:29,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:58:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:30,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:58:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:30,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 00:58:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:30,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:58:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:30,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-17 00:58:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:30,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-17 00:58:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:30,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:58:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:31,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 00:58:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:31,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-17 00:58:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:31,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:58:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:31,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-17 00:58:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:31,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:58:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:31,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-17 00:58:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:31,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-11-17 00:58:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:31,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-11-17 00:58:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:31,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2021-11-17 00:58:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:31,586 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-11-17 00:58:31,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:58:31,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65717604] [2021-11-17 00:58:31,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65717604] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 00:58:31,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302471485] [2021-11-17 00:58:31,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:58:31,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:58:31,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:58:31,604 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 00:58:31,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-17 00:58:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:58:33,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 2904 conjuncts, 104 conjunts are in the unsatisfiable core [2021-11-17 00:58:33,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:58:33,206 INFO L354 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2021-11-17 00:58:33,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 266 treesize of output 256 [2021-11-17 00:58:33,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2021-11-17 00:58:33,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2021-11-17 00:58:34,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2021-11-17 00:58:34,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2021-11-17 00:58:34,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2021-11-17 00:58:34,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2021-11-17 00:58:34,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2021-11-17 00:58:34,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2021-11-17 00:58:35,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2021-11-17 00:58:35,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2021-11-17 00:58:36,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2021-11-17 00:58:36,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2021-11-17 00:58:37,849 INFO L388 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 11 treesize of output 10 [2021-11-17 00:58:42,902 INFO L388 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 11 treesize of output 10 [2021-11-17 00:58:48,055 INFO L388 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 11 treesize of output 10 [2021-11-17 00:59:09,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: need array sort [2021-11-17 00:59:09,140 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-17 00:59:09,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2021-11-17 00:59:09,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196496235] [2021-11-17 00:59:09,141 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-17 00:59:09,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-17 00:59:09,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:59:09,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-17 00:59:09,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1561, Unknown=6, NotChecked=0, Total=1722 [2021-11-17 00:59:09,142 INFO L87 Difference]: Start difference. First operand 37472 states and 58774 transitions. Second operand has 30 states, 30 states have (on average 4.466666666666667) internal successors, (134), 20 states have internal predecessors, (134), 9 states have call successors, (33), 8 states have call predecessors, (33), 9 states have return successors, (32), 12 states have call predecessors, (32), 9 states have call successors, (32) [2021-11-17 00:59:09,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-17 00:59:09,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 209 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 35.1s TimeCoverageRelationStatistics Valid=155, Invalid=1561, Unknown=6, NotChecked=0, Total=1722 [2021-11-17 00:59:09,160 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:59:09,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 00:59:09,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-17 00:59:09,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 00:59:09,362 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@2375cc78 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-17 00:59:09,365 INFO L158 Benchmark]: Toolchain (without parser) took 507496.12ms. Allocated memory was 109.1MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 81.8MB in the beginning and 641.0MB in the end (delta: -559.2MB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2021-11-17 00:59:09,365 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 73.4MB. Free memory was 31.7MB in the beginning and 31.7MB in the end (delta: 39.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-17 00:59:09,366 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2101.83ms. Allocated memory was 109.1MB in the beginning and 159.4MB in the end (delta: 50.3MB). Free memory was 81.8MB in the beginning and 77.4MB in the end (delta: 4.4MB). Peak memory consumption was 94.6MB. Max. memory is 16.1GB. [2021-11-17 00:59:09,367 INFO L158 Benchmark]: Boogie Procedure Inliner took 257.16ms. Allocated memory was 159.4MB in the beginning and 255.9MB in the end (delta: 96.5MB). Free memory was 77.4MB in the beginning and 173.3MB in the end (delta: -96.0MB). Peak memory consumption was 42.5MB. Max. memory is 16.1GB. [2021-11-17 00:59:09,367 INFO L158 Benchmark]: Boogie Preprocessor took 199.58ms. Allocated memory is still 255.9MB. Free memory was 173.3MB in the beginning and 134.5MB in the end (delta: 38.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2021-11-17 00:59:09,367 INFO L158 Benchmark]: RCFGBuilder took 4267.47ms. Allocated memory was 255.9MB in the beginning and 404.8MB in the end (delta: 148.9MB). Free memory was 134.5MB in the beginning and 238.8MB in the end (delta: -104.3MB). Peak memory consumption was 118.5MB. Max. memory is 16.1GB. [2021-11-17 00:59:09,367 INFO L158 Benchmark]: TraceAbstraction took 500664.91ms. Allocated memory was 404.8MB in the beginning and 2.1GB in the end (delta: 1.7GB). Free memory was 238.8MB in the beginning and 641.0MB in the end (delta: -402.2MB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2021-11-17 00:59:09,369 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 73.4MB. Free memory was 31.7MB in the beginning and 31.7MB in the end (delta: 39.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2101.83ms. Allocated memory was 109.1MB in the beginning and 159.4MB in the end (delta: 50.3MB). Free memory was 81.8MB in the beginning and 77.4MB in the end (delta: 4.4MB). Peak memory consumption was 94.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 257.16ms. Allocated memory was 159.4MB in the beginning and 255.9MB in the end (delta: 96.5MB). Free memory was 77.4MB in the beginning and 173.3MB in the end (delta: -96.0MB). Peak memory consumption was 42.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 199.58ms. Allocated memory is still 255.9MB. Free memory was 173.3MB in the beginning and 134.5MB in the end (delta: 38.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * RCFGBuilder took 4267.47ms. Allocated memory was 255.9MB in the beginning and 404.8MB in the end (delta: 148.9MB). Free memory was 134.5MB in the beginning and 238.8MB in the end (delta: -104.3MB). Peak memory consumption was 118.5MB. Max. memory is 16.1GB. * TraceAbstraction took 500664.91ms. Allocated memory was 404.8MB in the beginning and 2.1GB in the end (delta: 1.7GB). Free memory was 238.8MB in the beginning and 641.0MB in the end (delta: -402.2MB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@2375cc78 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@2375cc78: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-17 00:59:09,575 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-17 00:59:09,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_Bitvector.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 0.2.1-dev-0f8a17c [2021-11-17 00:59:11,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 00:59:11,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 00:59:11,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 00:59:11,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 00:59:11,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 00:59:11,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 00:59:11,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 00:59:11,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 00:59:11,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 00:59:11,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 00:59:11,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 00:59:11,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 00:59:11,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 00:59:11,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 00:59:11,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 00:59:11,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 00:59:11,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 00:59:11,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 00:59:11,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 00:59:11,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 00:59:11,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 00:59:11,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 00:59:11,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 00:59:11,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 00:59:11,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 00:59:11,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 00:59:11,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 00:59:11,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 00:59:11,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 00:59:11,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 00:59:11,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 00:59:11,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 00:59:11,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 00:59:11,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 00:59:11,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 00:59:11,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 00:59:11,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 00:59:11,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 00:59:11,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 00:59:11,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 00:59:11,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-17 00:59:11,182 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 00:59:11,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 00:59:11,184 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 00:59:11,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 00:59:11,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 00:59:11,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 00:59:11,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 00:59:11,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 00:59:11,186 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 00:59:11,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 00:59:11,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 00:59:11,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 00:59:11,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 00:59:11,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 00:59:11,187 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-17 00:59:11,187 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-17 00:59:11,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 00:59:11,188 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 00:59:11,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 00:59:11,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 00:59:11,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 00:59:11,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 00:59:11,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 00:59:11,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 00:59:11,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 00:59:11,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 00:59:11,196 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-17 00:59:11,196 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-17 00:59:11,196 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 00:59:11,196 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 00:59:11,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 00:59:11,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 00:59:11,197 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-17 00:59:11,197 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed18c341b13cb38f54b1bbde59f9cd5a73bcebd88430e5620ebca0060f7baed5 [2021-11-17 00:59:11,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 00:59:11,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 00:59:11,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 00:59:11,481 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 00:59:11,482 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 00:59:11,483 INFO L432 ainManager$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 [2021-11-17 00:59:11,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6278e149f/181a05d9a0b2495a99782384a738c499/FLAG97d112c9b [2021-11-17 00:59:12,147 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 00:59:12,147 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 [2021-11-17 00:59:12,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6278e149f/181a05d9a0b2495a99782384a738c499/FLAG97d112c9b [2021-11-17 00:59:12,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6278e149f/181a05d9a0b2495a99782384a738c499 [2021-11-17 00:59:12,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 00:59:12,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 00:59:12,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 00:59:12,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 00:59:12,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 00:59:12,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:59:12" (1/1) ... [2021-11-17 00:59:12,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c199807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:59:12, skipping insertion in model container [2021-11-17 00:59:12,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:59:12" (1/1) ... [2021-11-17 00:59:12,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 00:59:12,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 00:59:13,610 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] [2021-11-17 00:59:14,141 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 00:59:14,191 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 00:59:14,319 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] [2021-11-17 00:59:14,540 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 00:59:14,644 INFO L208 MainTranslator]: Completed translation [2021-11-17 00:59:14,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:59:14 WrapperNode [2021-11-17 00:59:14,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 00:59:14,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 00:59:14,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 00:59:14,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 00:59:14,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:59:14" (1/1) ... [2021-11-17 00:59:14,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:59:14" (1/1) ... [2021-11-17 00:59:14,873 INFO L137 Inliner]: procedures = 391, calls = 2228, calls flagged for inlining = 195, calls inlined = 193, statements flattened = 6256 [2021-11-17 00:59:14,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 00:59:14,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 00:59:14,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 00:59:14,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 00:59:14,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:59:14" (1/1) ... [2021-11-17 00:59:14,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:59:14" (1/1) ... [2021-11-17 00:59:14,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:59:14" (1/1) ... [2021-11-17 00:59:14,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:59:14" (1/1) ... [2021-11-17 00:59:15,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:59:14" (1/1) ... [2021-11-17 00:59:15,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:59:14" (1/1) ... [2021-11-17 00:59:15,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:59:14" (1/1) ... [2021-11-17 00:59:15,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 00:59:15,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 00:59:15,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 00:59:15,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 00:59:15,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:59:14" (1/1) ... [2021-11-17 00:59:15,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 00:59:15,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 00:59:15,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-17 00:59:15,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-17 00:59:15,277 INFO L130 BoogieDeclarations]: Found specification of procedure find_comp_entry [2021-11-17 00:59:15,277 INFO L138 BoogieDeclarations]: Found implementation of procedure find_comp_entry [2021-11-17 00:59:15,277 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-17 00:59:15,277 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-11-17 00:59:15,277 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-11-17 00:59:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_shutdown_interface [2021-11-17 00:59:15,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_shutdown_interface [2021-11-17 00:59:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_interface [2021-11-17 00:59:15,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_interface [2021-11-17 00:59:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-17 00:59:15,278 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-17 00:59:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-17 00:59:15,278 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-17 00:59:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 00:59:15,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 00:59:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_push [2021-11-17 00:59:15,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_push [2021-11-17 00:59:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-17 00:59:15,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-17 00:59:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure unit_find [2021-11-17 00:59:15,278 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_find [2021-11-17 00:59:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-17 00:59:15,279 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-17 00:59:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure skb_peek [2021-11-17 00:59:15,279 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_peek [2021-11-17 00:59:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_19 [2021-11-17 00:59:15,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_19 [2021-11-17 00:59:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure get_filter [2021-11-17 00:59:15,279 INFO L138 BoogieDeclarations]: Found implementation of procedure get_filter [2021-11-17 00:59:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2021-11-17 00:59:15,279 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2021-11-17 00:59:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_get_stats64 [2021-11-17 00:59:15,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_get_stats64 [2021-11-17 00:59:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-11-17 00:59:15,279 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-11-17 00:59:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-17 00:59:15,279 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-17 00:59:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-17 00:59:15,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-17 00:59:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 00:59:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-17 00:59:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-17 00:59:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-17 00:59:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-17 00:59:15,280 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-17 00:59:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-17 00:59:15,280 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-17 00:59:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_push [2021-11-17 00:59:15,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_push [2021-11-17 00:59:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-17 00:59:15,280 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-17 00:59:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-17 00:59:15,281 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-17 00:59:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-17 00:59:15,281 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-17 00:59:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-17 00:59:15,281 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-17 00:59:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-17 00:59:15,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-17 00:59:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock_bh [2021-11-17 00:59:15,281 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock_bh [2021-11-17 00:59:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2021-11-17 00:59:15,281 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2021-11-17 00:59:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2021-11-17 00:59:15,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2021-11-17 00:59:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2021-11-17 00:59:15,282 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2021-11-17 00:59:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_do_recv [2021-11-17 00:59:15,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_do_recv [2021-11-17 00:59:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-17 00:59:15,282 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-17 00:59:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure proto_to_npindex [2021-11-17 00:59:15,282 INFO L138 BoogieDeclarations]: Found implementation of procedure proto_to_npindex [2021-11-17 00:59:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2021-11-17 00:59:15,282 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2021-11-17 00:59:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-17 00:59:15,282 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-17 00:59:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-17 00:59:15,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-17 00:59:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_open [2021-11-17 00:59:15,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_open [2021-11-17 00:59:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 00:59:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-17 00:59:15,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-17 00:59:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 00:59:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 00:59:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-17 00:59:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-17 00:59:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-17 00:59:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 00:59:15,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 00:59:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-17 00:59:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-17 00:59:15,283 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-17 00:59:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-17 00:59:15,284 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-17 00:59:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2021-11-17 00:59:15,284 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2021-11-17 00:59:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-17 00:59:15,284 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-17 00:59:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-11-17 00:59:15,284 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-11-17 00:59:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-17 00:59:15,284 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-17 00:59:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_may_pull [2021-11-17 00:59:15,284 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_may_pull [2021-11-17 00:59:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_peek [2021-11-17 00:59:15,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_peek [2021-11-17 00:59:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_44 [2021-11-17 00:59:15,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_44 [2021-11-17 00:59:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-17 00:59:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_channel [2021-11-17 00:59:15,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_channel [2021-11-17 00:59:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 00:59:15,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 00:59:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-17 00:59:15,285 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-17 00:59:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-17 00:59:15,285 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-17 00:59:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure sk_unattached_filter_destroy [2021-11-17 00:59:15,285 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_unattached_filter_destroy [2021-11-17 00:59:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-17 00:59:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-17 00:59:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_bh [2021-11-17 00:59:15,286 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_bh [2021-11-17 00:59:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_bh [2021-11-17 00:59:15,286 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_bh [2021-11-17 00:59:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-17 00:59:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-17 00:59:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-17 00:59:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-17 00:59:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 00:59:15,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 00:59:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-11-17 00:59:15,286 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-11-17 00:59:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_xmit_process [2021-11-17 00:59:15,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_xmit_process [2021-11-17 00:59:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_unlink [2021-11-17 00:59:15,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_unlink [2021-11-17 00:59:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-17 00:59:15,287 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-17 00:59:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock_bh [2021-11-17 00:59:15,287 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock_bh [2021-11-17 00:59:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~TO~$Pointer$ [2021-11-17 00:59:15,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~TO~$Pointer$ [2021-11-17 00:59:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-17 00:59:15,287 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-17 00:59:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2021-11-17 00:59:15,287 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2021-11-17 00:59:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-17 00:59:15,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-17 00:59:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be16 [2021-11-17 00:59:15,287 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be16 [2021-11-17 00:59:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-17 00:59:15,288 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-17 00:59:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-17 00:59:15,288 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-17 00:59:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure init_ppp_file [2021-11-17 00:59:15,288 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ppp_file [2021-11-17 00:59:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-17 00:59:15,288 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-17 00:59:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-17 00:59:15,288 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-17 00:59:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_release [2021-11-17 00:59:15,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_release [2021-11-17 00:59:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 00:59:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-17 00:59:15,288 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-17 00:59:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2021-11-17 00:59:15,289 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2021-11-17 00:59:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 00:59:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-17 00:59:15,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-17 00:59:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_send_frame [2021-11-17 00:59:15,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_send_frame [2021-11-17 00:59:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-17 00:59:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-17 00:59:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-17 00:59:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-17 00:59:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 00:59:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_error [2021-11-17 00:59:15,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_error [2021-11-17 00:59:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_find_unit [2021-11-17 00:59:15,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_find_unit [2021-11-17 00:59:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-17 00:59:15,290 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-17 00:59:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure sk_unattached_filter_create [2021-11-17 00:59:15,290 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_unattached_filter_create [2021-11-17 00:59:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-17 00:59:15,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-17 00:59:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-17 00:59:15,290 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-17 00:59:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-17 00:59:15,290 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-17 00:59:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure find_compressor [2021-11-17 00:59:15,291 INFO L138 BoogieDeclarations]: Found implementation of procedure find_compressor [2021-11-17 00:59:15,291 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_pernet [2021-11-17 00:59:15,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_pernet [2021-11-17 00:59:15,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-17 00:59:15,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-17 00:59:15,291 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_UINT [2021-11-17 00:59:15,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_UINT [2021-11-17 00:59:15,291 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pernet_device [2021-11-17 00:59:15,291 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pernet_device [2021-11-17 00:59:15,291 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_disconnect_channel [2021-11-17 00:59:15,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_disconnect_channel [2021-11-17 00:59:15,291 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_net_ioctl [2021-11-17 00:59:15,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_net_ioctl [2021-11-17 00:59:15,291 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-17 00:59:15,291 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-17 00:59:15,291 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-17 00:59:15,292 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-17 00:59:15,292 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_exit_net [2021-11-17 00:59:15,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_exit_net [2021-11-17 00:59:15,292 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2021-11-17 00:59:15,292 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2021-11-17 00:59:15,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-17 00:59:15,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-17 00:59:15,292 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2021-11-17 00:59:15,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2021-11-17 00:59:15,292 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2021-11-17 00:59:15,292 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2021-11-17 00:59:15,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_16 [2021-11-17 00:59:15,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_16 [2021-11-17 00:59:15,292 INFO L130 BoogieDeclarations]: Found specification of procedure net_generic [2021-11-17 00:59:15,292 INFO L138 BoogieDeclarations]: Found implementation of procedure net_generic [2021-11-17 00:59:15,292 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-11-17 00:59:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-11-17 00:59:15,293 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-17 00:59:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-17 00:59:15,293 INFO L130 BoogieDeclarations]: Found specification of procedure unit_put [2021-11-17 00:59:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_put [2021-11-17 00:59:15,293 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_nonmp_frame [2021-11-17 00:59:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_nonmp_frame [2021-11-17 00:59:15,293 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-17 00:59:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-17 00:59:15,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-17 00:59:15,293 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-11-17 00:59:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-11-17 00:59:15,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-17 00:59:15,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-17 00:59:15,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-17 00:59:15,293 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_write [2021-11-17 00:59:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_write [2021-11-17 00:59:15,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 00:59:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 00:59:15,294 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_closed [2021-11-17 00:59:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_closed [2021-11-17 00:59:15,294 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-17 00:59:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-17 00:59:15,294 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-17 00:59:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-17 00:59:15,294 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-17 00:59:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-17 00:59:15,294 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-17 00:59:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-17 00:59:15,294 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-17 00:59:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-17 00:59:15,294 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-17 00:59:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-17 00:59:15,295 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_long_read [2021-11-17 00:59:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_long_read [2021-11-17 00:59:15,295 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_register_net_channel [2021-11-17 00:59:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_register_net_channel [2021-11-17 00:59:15,295 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-17 00:59:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-17 00:59:15,295 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_mp_explode [2021-11-17 00:59:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_mp_explode [2021-11-17 00:59:15,295 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_poll [2021-11-17 00:59:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_poll [2021-11-17 00:59:15,295 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-17 00:59:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-17 00:59:16,043 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 00:59:16,045 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 00:59:19,493 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 00:59:36,070 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 00:59:36,083 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 00:59:36,084 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-17 00:59:36,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:59:36 BoogieIcfgContainer [2021-11-17 00:59:36,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 00:59:36,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 00:59:36,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 00:59:36,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 00:59:36,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:59:12" (1/3) ... [2021-11-17 00:59:36,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6c13ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:59:36, skipping insertion in model container [2021-11-17 00:59:36,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:59:14" (2/3) ... [2021-11-17 00:59:36,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6c13ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:59:36, skipping insertion in model container [2021-11-17 00:59:36,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:59:36" (3/3) ... [2021-11-17 00:59:36,092 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 [2021-11-17 00:59:36,095 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 00:59:36,096 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 00:59:36,130 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 00:59:36,134 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-17 00:59:36,135 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 00:59:36,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 2155 states, 1522 states have (on average 1.3745072273324572) internal successors, (2092), 1581 states have internal predecessors, (2092), 512 states have call successors, (512), 120 states have call predecessors, (512), 119 states have return successors, (507), 494 states have call predecessors, (507), 507 states have call successors, (507) [2021-11-17 00:59:36,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-17 00:59:36,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:59:36,194 INFO L514 BasicCegarLoop]: 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] [2021-11-17 00:59:36,194 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:59:36,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:59:36,198 INFO L85 PathProgramCache]: Analyzing trace with hash -604841872, now seen corresponding path program 1 times [2021-11-17 00:59:36,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 00:59:36,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988677306] [2021-11-17 00:59:36,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:59:36,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 00:59:36,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 00:59:36,211 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 00:59:36,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-17 00:59:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:59:37,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-17 00:59:37,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:59:37,775 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-17 00:59:37,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:59:37,969 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-17 00:59:37,970 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 00:59:37,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988677306] [2021-11-17 00:59:37,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988677306] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-17 00:59:37,971 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:59:37,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-17 00:59:37,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623305742] [2021-11-17 00:59:37,973 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-17 00:59:37,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 00:59:37,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 00:59:37,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 00:59:37,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-17 00:59:37,995 INFO L87 Difference]: Start difference. First operand has 2155 states, 1522 states have (on average 1.3745072273324572) internal successors, (2092), 1581 states have internal predecessors, (2092), 512 states have call successors, (512), 120 states have call predecessors, (512), 119 states have return successors, (507), 494 states have call predecessors, (507), 507 states have call successors, (507) Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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) [2021-11-17 00:59:38,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:59:38,545 INFO L93 Difference]: Finished difference Result 6435 states and 9656 transitions. [2021-11-17 00:59:38,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 00:59:38,547 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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 [2021-11-17 00:59:38,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:59:38,586 INFO L225 Difference]: With dead ends: 6435 [2021-11-17 00:59:38,586 INFO L226 Difference]: Without dead ends: 4238 [2021-11-17 00:59:38,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:59:38,608 INFO L933 BasicCegarLoop]: 3788 mSDtfsCounter, 3095 mSDsluCounter, 14517 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3095 SdHoareTripleChecker+Valid, 18305 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:59:38,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3095 Valid, 18305 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-17 00:59:38,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4238 states. [2021-11-17 00:59:38,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4238 to 4234. [2021-11-17 00:59:38,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4234 states, 2996 states have (on average 1.3651535380507342) internal successors, (4090), 3100 states have internal predecessors, (4090), 1001 states have call successors, (1001), 237 states have call predecessors, (1001), 236 states have return successors, (1089), 974 states have call predecessors, (1089), 1000 states have call successors, (1089) [2021-11-17 00:59:38,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4234 states to 4234 states and 6180 transitions. [2021-11-17 00:59:38,870 INFO L78 Accepts]: Start accepts. Automaton has 4234 states and 6180 transitions. Word has length 69 [2021-11-17 00:59:38,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:59:38,872 INFO L470 AbstractCegarLoop]: Abstraction has 4234 states and 6180 transitions. [2021-11-17 00:59:38,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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) [2021-11-17 00:59:38,872 INFO L276 IsEmpty]: Start isEmpty. Operand 4234 states and 6180 transitions. [2021-11-17 00:59:38,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-17 00:59:38,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:59:38,881 INFO L514 BasicCegarLoop]: 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] [2021-11-17 00:59:38,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-17 00:59:39,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 00:59:39,092 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:59:39,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:59:39,092 INFO L85 PathProgramCache]: Analyzing trace with hash -18369843, now seen corresponding path program 1 times [2021-11-17 00:59:39,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 00:59:39,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097864197] [2021-11-17 00:59:39,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:59:39,094 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 00:59:39,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 00:59:39,095 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 00:59:39,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-17 00:59:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:59:40,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 00:59:40,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:59:40,506 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-17 00:59:40,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:59:40,750 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-17 00:59:40,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 00:59:40,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097864197] [2021-11-17 00:59:40,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097864197] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-17 00:59:40,751 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:59:40,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-17 00:59:40,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756503085] [2021-11-17 00:59:40,752 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-17 00:59:40,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 00:59:40,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 00:59:40,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 00:59:40,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 00:59:40,757 INFO L87 Difference]: Start difference. First operand 4234 states and 6180 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 00:59:41,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:59:41,255 INFO L93 Difference]: Finished difference Result 12382 states and 18156 transitions. [2021-11-17 00:59:41,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 00:59:41,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 105 [2021-11-17 00:59:41,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:59:41,298 INFO L225 Difference]: With dead ends: 12382 [2021-11-17 00:59:41,298 INFO L226 Difference]: Without dead ends: 8168 [2021-11-17 00:59:41,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 00:59:41,315 INFO L933 BasicCegarLoop]: 4040 mSDtfsCounter, 2892 mSDsluCounter, 3002 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2892 SdHoareTripleChecker+Valid, 7042 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:59:41,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2892 Valid, 7042 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-17 00:59:41,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8168 states. [2021-11-17 00:59:41,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8168 to 8115. [2021-11-17 00:59:41,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8115 states, 5731 states have (on average 1.3643343221078346) internal successors, (7819), 5944 states have internal predecessors, (7819), 1921 states have call successors, (1921), 463 states have call predecessors, (1921), 462 states have return successors, (2199), 1861 states have call predecessors, (2199), 1920 states have call successors, (2199) [2021-11-17 00:59:41,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8115 states to 8115 states and 11939 transitions. [2021-11-17 00:59:41,582 INFO L78 Accepts]: Start accepts. Automaton has 8115 states and 11939 transitions. Word has length 105 [2021-11-17 00:59:41,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:59:41,583 INFO L470 AbstractCegarLoop]: Abstraction has 8115 states and 11939 transitions. [2021-11-17 00:59:41,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 00:59:41,583 INFO L276 IsEmpty]: Start isEmpty. Operand 8115 states and 11939 transitions. [2021-11-17 00:59:41,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-17 00:59:41,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:59:41,587 INFO L514 BasicCegarLoop]: 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] [2021-11-17 00:59:41,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-17 00:59:41,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 00:59:41,799 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:59:41,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:59:41,800 INFO L85 PathProgramCache]: Analyzing trace with hash 187131378, now seen corresponding path program 1 times [2021-11-17 00:59:41,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 00:59:41,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747669259] [2021-11-17 00:59:41,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:59:41,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 00:59:41,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 00:59:41,803 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 00:59:41,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-17 00:59:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:59:43,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 1185 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 00:59:43,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:59:43,373 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-17 00:59:43,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:59:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-11-17 00:59:43,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 00:59:43,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747669259] [2021-11-17 00:59:43,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747669259] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-17 00:59:43,584 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:59:43,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-17 00:59:43,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971211909] [2021-11-17 00:59:43,584 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-17 00:59:43,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 00:59:43,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 00:59:43,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 00:59:43,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 00:59:43,585 INFO L87 Difference]: Start difference. First operand 8115 states and 11939 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 00:59:44,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:59:44,104 INFO L93 Difference]: Finished difference Result 21856 states and 31953 transitions. [2021-11-17 00:59:44,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 00:59:44,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 108 [2021-11-17 00:59:44,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:59:44,169 INFO L225 Difference]: With dead ends: 21856 [2021-11-17 00:59:44,169 INFO L226 Difference]: Without dead ends: 13761 [2021-11-17 00:59:44,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 00:59:44,196 INFO L933 BasicCegarLoop]: 4829 mSDtfsCounter, 2127 mSDsluCounter, 3007 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2127 SdHoareTripleChecker+Valid, 7836 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:59:44,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2127 Valid, 7836 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-17 00:59:44,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13761 states. [2021-11-17 00:59:44,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13761 to 13735. [2021-11-17 00:59:44,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13735 states, 9715 states have (on average 1.3586206896551725) internal successors, (13199), 10096 states have internal predecessors, (13199), 3155 states have call successors, (3155), 865 states have call predecessors, (3155), 864 states have return successors, (3655), 3049 states have call predecessors, (3655), 3154 states have call successors, (3655) [2021-11-17 00:59:44,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13735 states to 13735 states and 20009 transitions. [2021-11-17 00:59:44,665 INFO L78 Accepts]: Start accepts. Automaton has 13735 states and 20009 transitions. Word has length 108 [2021-11-17 00:59:44,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:59:44,665 INFO L470 AbstractCegarLoop]: Abstraction has 13735 states and 20009 transitions. [2021-11-17 00:59:44,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-17 00:59:44,666 INFO L276 IsEmpty]: Start isEmpty. Operand 13735 states and 20009 transitions. [2021-11-17 00:59:44,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-17 00:59:44,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:59:44,674 INFO L514 BasicCegarLoop]: 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] [2021-11-17 00:59:44,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-17 00:59:44,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 00:59:44,883 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:59:44,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:59:44,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1375457225, now seen corresponding path program 1 times [2021-11-17 00:59:44,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 00:59:44,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903689948] [2021-11-17 00:59:44,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:59:44,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 00:59:44,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 00:59:44,886 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 00:59:44,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-17 00:59:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:59:46,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-17 00:59:46,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:59:46,438 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-11-17 00:59:46,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:59:46,686 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-17 00:59:46,686 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 00:59:46,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903689948] [2021-11-17 00:59:46,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903689948] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-17 00:59:46,687 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:59:46,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-17 00:59:46,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482223223] [2021-11-17 00:59:46,687 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-17 00:59:46,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:59:46,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 00:59:46,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:59:46,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:59:46,688 INFO L87 Difference]: Start difference. First operand 13735 states and 20009 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-17 00:59:48,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:59:49,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:59:49,559 INFO L93 Difference]: Finished difference Result 41161 states and 59951 transitions. [2021-11-17 00:59:49,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 00:59:49,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 142 [2021-11-17 00:59:49,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:59:49,732 INFO L225 Difference]: With dead ends: 41161 [2021-11-17 00:59:49,732 INFO L226 Difference]: Without dead ends: 27410 [2021-11-17 00:59:49,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-17 00:59:49,774 INFO L933 BasicCegarLoop]: 3823 mSDtfsCounter, 3055 mSDsluCounter, 10698 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3055 SdHoareTripleChecker+Valid, 14521 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-17 00:59:49,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3055 Valid, 14521 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-17 00:59:49,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27410 states. [2021-11-17 00:59:50,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27410 to 27284. [2021-11-17 00:59:50,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27284 states, 19296 states have (on average 1.359556384742952) internal successors, (26234), 20048 states have internal predecessors, (26234), 6274 states have call successors, (6274), 1714 states have call predecessors, (6274), 1713 states have return successors, (7275), 6058 states have call predecessors, (7275), 6273 states have call successors, (7275) [2021-11-17 00:59:50,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27284 states to 27284 states and 39783 transitions. [2021-11-17 00:59:50,563 INFO L78 Accepts]: Start accepts. Automaton has 27284 states and 39783 transitions. Word has length 142 [2021-11-17 00:59:50,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:59:50,564 INFO L470 AbstractCegarLoop]: Abstraction has 27284 states and 39783 transitions. [2021-11-17 00:59:50,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-17 00:59:50,564 INFO L276 IsEmpty]: Start isEmpty. Operand 27284 states and 39783 transitions. [2021-11-17 00:59:50,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-17 00:59:50,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:59:50,571 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 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] [2021-11-17 00:59:50,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-17 00:59:50,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 00:59:50,791 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:59:50,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:59:50,792 INFO L85 PathProgramCache]: Analyzing trace with hash 690064665, now seen corresponding path program 1 times [2021-11-17 00:59:50,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 00:59:50,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647556000] [2021-11-17 00:59:50,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:59:50,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 00:59:50,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 00:59:50,794 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 00:59:50,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-17 00:59:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:59:52,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 1346 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 00:59:52,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:59:52,371 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-11-17 00:59:52,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:59:52,612 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-17 00:59:52,612 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 00:59:52,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647556000] [2021-11-17 00:59:52,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647556000] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-17 00:59:52,612 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:59:52,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-17 00:59:52,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143029190] [2021-11-17 00:59:52,612 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-17 00:59:52,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 00:59:52,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 00:59:52,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 00:59:52,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 00:59:52,613 INFO L87 Difference]: Start difference. First operand 27284 states and 39783 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 00:59:54,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:59:54,154 INFO L93 Difference]: Finished difference Result 41333 states and 60301 transitions. [2021-11-17 00:59:54,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 00:59:54,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (22), 2 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 155 [2021-11-17 00:59:54,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:59:54,213 INFO L225 Difference]: With dead ends: 41333 [2021-11-17 00:59:54,213 INFO L226 Difference]: Without dead ends: 14069 [2021-11-17 00:59:54,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:59:54,366 INFO L933 BasicCegarLoop]: 2986 mSDtfsCounter, 3736 mSDsluCounter, 2470 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3736 SdHoareTripleChecker+Valid, 5456 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:59:54,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3736 Valid, 5456 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-17 00:59:54,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14069 states. [2021-11-17 00:59:54,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14069 to 13714. [2021-11-17 00:59:54,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13714 states, 9700 states have (on average 1.357319587628866) internal successors, (13166), 10074 states have internal predecessors, (13166), 3152 states have call successors, (3152), 862 states have call predecessors, (3152), 861 states have return successors, (3652), 3046 states have call predecessors, (3652), 3151 states have call successors, (3652) [2021-11-17 00:59:54,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13714 states to 13714 states and 19970 transitions. [2021-11-17 00:59:54,876 INFO L78 Accepts]: Start accepts. Automaton has 13714 states and 19970 transitions. Word has length 155 [2021-11-17 00:59:54,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:59:54,877 INFO L470 AbstractCegarLoop]: Abstraction has 13714 states and 19970 transitions. [2021-11-17 00:59:54,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 00:59:54,877 INFO L276 IsEmpty]: Start isEmpty. Operand 13714 states and 19970 transitions. [2021-11-17 00:59:54,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-17 00:59:54,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:59:54,882 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 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] [2021-11-17 00:59:54,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-17 00:59:55,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 00:59:55,095 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:59:55,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:59:55,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1585971886, now seen corresponding path program 1 times [2021-11-17 00:59:55,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 00:59:55,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521415778] [2021-11-17 00:59:55,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:59:55,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 00:59:55,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 00:59:55,112 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 00:59:55,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-17 00:59:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:59:56,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 00:59:56,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 00:59:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-11-17 00:59:56,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 00:59:57,284 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-11-17 00:59:57,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 00:59:57,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521415778] [2021-11-17 00:59:57,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521415778] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-17 00:59:57,284 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:59:57,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-17 00:59:57,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53878537] [2021-11-17 00:59:57,284 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-17 00:59:57,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 00:59:57,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 00:59:57,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 00:59:57,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 00:59:57,285 INFO L87 Difference]: Start difference. First operand 13714 states and 19970 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-17 00:59:59,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:59:59,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:59:59,990 INFO L93 Difference]: Finished difference Result 33277 states and 48368 transitions. [2021-11-17 00:59:59,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 00:59:59,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 162 [2021-11-17 00:59:59,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 01:00:00,086 INFO L225 Difference]: With dead ends: 33277 [2021-11-17 01:00:00,086 INFO L226 Difference]: Without dead ends: 19583 [2021-11-17 01:00:00,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 01:00:00,224 INFO L933 BasicCegarLoop]: 4735 mSDtfsCounter, 2171 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2171 SdHoareTripleChecker+Valid, 7746 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-17 01:00:00,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2171 Valid, 7746 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-17 01:00:00,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19583 states. [2021-11-17 01:00:00,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19583 to 19546. [2021-11-17 01:00:00,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19546 states, 13840 states have (on average 1.3546242774566475) internal successors, (18748), 14390 states have internal predecessors, (18748), 4430 states have call successors, (4430), 1276 states have call predecessors, (4430), 1275 states have return successors, (5166), 4274 states have call predecessors, (5166), 4429 states have call successors, (5166) [2021-11-17 01:00:00,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19546 states to 19546 states and 28344 transitions. [2021-11-17 01:00:00,811 INFO L78 Accepts]: Start accepts. Automaton has 19546 states and 28344 transitions. Word has length 162 [2021-11-17 01:00:00,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 01:00:00,812 INFO L470 AbstractCegarLoop]: Abstraction has 19546 states and 28344 transitions. [2021-11-17 01:00:00,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-17 01:00:00,812 INFO L276 IsEmpty]: Start isEmpty. Operand 19546 states and 28344 transitions. [2021-11-17 01:00:00,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-17 01:00:00,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 01:00:00,816 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 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] [2021-11-17 01:00:00,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-17 01:00:01,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 01:00:01,027 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 01:00:01,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 01:00:01,028 INFO L85 PathProgramCache]: Analyzing trace with hash -839288048, now seen corresponding path program 1 times [2021-11-17 01:00:01,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 01:00:01,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861244674] [2021-11-17 01:00:01,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 01:00:01,029 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 01:00:01,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 01:00:01,030 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 01:00:01,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-17 01:00:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:00:02,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-17 01:00:02,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 01:00:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-17 01:00:02,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 01:00:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-17 01:00:03,500 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 01:00:03,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861244674] [2021-11-17 01:00:03,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861244674] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-17 01:00:03,500 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-17 01:00:03,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-17 01:00:03,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397427559] [2021-11-17 01:00:03,500 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-17 01:00:03,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 01:00:03,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 01:00:03,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 01:00:03,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-17 01:00:03,501 INFO L87 Difference]: Start difference. First operand 19546 states and 28344 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2021-11-17 01:00:04,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 01:00:04,074 INFO L93 Difference]: Finished difference Result 39144 states and 57842 transitions. [2021-11-17 01:00:04,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 01:00:04,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) Word has length 162 [2021-11-17 01:00:04,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 01:00:04,158 INFO L225 Difference]: With dead ends: 39144 [2021-11-17 01:00:04,158 INFO L226 Difference]: Without dead ends: 19618 [2021-11-17 01:00:04,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-17 01:00:04,228 INFO L933 BasicCegarLoop]: 3074 mSDtfsCounter, 2 mSDsluCounter, 9217 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12291 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 01:00:04,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 12291 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 01:00:04,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19618 states. [2021-11-17 01:00:04,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19618 to 19606. [2021-11-17 01:00:04,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19606 states, 13882 states have (on average 1.3535513614752916) internal successors, (18790), 14438 states have internal predecessors, (18790), 4430 states have call successors, (4430), 1276 states have call predecessors, (4430), 1293 states have return successors, (5242), 4286 states have call predecessors, (5242), 4429 states have call successors, (5242) [2021-11-17 01:00:04,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19606 states to 19606 states and 28462 transitions. [2021-11-17 01:00:04,930 INFO L78 Accepts]: Start accepts. Automaton has 19606 states and 28462 transitions. Word has length 162 [2021-11-17 01:00:04,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 01:00:04,931 INFO L470 AbstractCegarLoop]: Abstraction has 19606 states and 28462 transitions. [2021-11-17 01:00:04,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2021-11-17 01:00:04,931 INFO L276 IsEmpty]: Start isEmpty. Operand 19606 states and 28462 transitions. [2021-11-17 01:00:04,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-17 01:00:04,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 01:00:04,936 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 01:00:04,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-17 01:00:05,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 01:00:05,155 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 01:00:05,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 01:00:05,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1507892537, now seen corresponding path program 1 times [2021-11-17 01:00:05,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 01:00:05,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981099764] [2021-11-17 01:00:05,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 01:00:05,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 01:00:05,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 01:00:05,159 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 01:00:05,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-17 01:00:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:00:06,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-17 01:00:06,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 01:00:07,147 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-11-17 01:00:07,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 01:00:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-11-17 01:00:08,245 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 01:00:08,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981099764] [2021-11-17 01:00:08,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981099764] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-17 01:00:08,245 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-17 01:00:08,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 10 [2021-11-17 01:00:08,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276208641] [2021-11-17 01:00:08,245 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-17 01:00:08,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 01:00:08,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 01:00:08,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 01:00:08,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-17 01:00:08,246 INFO L87 Difference]: Start difference. First operand 19606 states and 28462 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 8 states have internal predecessors, (97), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 01:00:09,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 01:00:09,296 INFO L93 Difference]: Finished difference Result 39288 states and 58030 transitions. [2021-11-17 01:00:09,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-17 01:00:09,297 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 8 states have internal predecessors, (97), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 2 states have call successors, (21) Word has length 183 [2021-11-17 01:00:09,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 01:00:09,365 INFO L225 Difference]: With dead ends: 39288 [2021-11-17 01:00:09,365 INFO L226 Difference]: Without dead ends: 19702 [2021-11-17 01:00:09,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-17 01:00:09,418 INFO L933 BasicCegarLoop]: 3097 mSDtfsCounter, 16 mSDsluCounter, 24738 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 27835 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-17 01:00:09,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 27835 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-17 01:00:09,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19702 states. [2021-11-17 01:00:09,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19702 to 19672. [2021-11-17 01:00:09,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19672 states, 13930 states have (on average 1.3514716439339556) internal successors, (18826), 14486 states have internal predecessors, (18826), 4436 states have call successors, (4436), 1276 states have call predecessors, (4436), 1305 states have return successors, (5308), 4304 states have call predecessors, (5308), 4435 states have call successors, (5308) [2021-11-17 01:00:09,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19672 states to 19672 states and 28570 transitions. [2021-11-17 01:00:09,948 INFO L78 Accepts]: Start accepts. Automaton has 19672 states and 28570 transitions. Word has length 183 [2021-11-17 01:00:09,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 01:00:09,949 INFO L470 AbstractCegarLoop]: Abstraction has 19672 states and 28570 transitions. [2021-11-17 01:00:09,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 8 states have internal predecessors, (97), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 01:00:09,949 INFO L276 IsEmpty]: Start isEmpty. Operand 19672 states and 28570 transitions. [2021-11-17 01:00:09,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-17 01:00:09,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 01:00:09,954 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 01:00:09,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-17 01:00:10,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 01:00:10,180 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 01:00:10,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 01:00:10,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1504479933, now seen corresponding path program 1 times [2021-11-17 01:00:10,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 01:00:10,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840141247] [2021-11-17 01:00:10,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 01:00:10,183 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 01:00:10,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 01:00:10,183 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 01:00:10,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-17 01:00:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:00:11,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-17 01:00:11,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 01:00:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-11-17 01:00:14,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 01:00:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-11-17 01:00:20,946 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 01:00:20,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840141247] [2021-11-17 01:00:20,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840141247] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-17 01:00:20,946 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-17 01:00:20,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21, 16] imperfect sequences [] total 34 [2021-11-17 01:00:20,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337416319] [2021-11-17 01:00:20,946 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-17 01:00:20,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-17 01:00:20,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 01:00:20,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-17 01:00:20,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1036, Unknown=0, NotChecked=0, Total=1122 [2021-11-17 01:00:20,949 INFO L87 Difference]: Start difference. First operand 19672 states and 28570 transitions. Second operand has 34 states, 30 states have (on average 4.2) internal successors, (126), 24 states have internal predecessors, (126), 9 states have call successors, (28), 2 states have call predecessors, (28), 11 states have return successors, (30), 16 states have call predecessors, (30), 8 states have call successors, (30) [2021-11-17 01:00:24,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 01:00:24,278 INFO L93 Difference]: Finished difference Result 39578 states and 57514 transitions. [2021-11-17 01:00:24,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-17 01:00:24,279 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 4.2) internal successors, (126), 24 states have internal predecessors, (126), 9 states have call successors, (28), 2 states have call predecessors, (28), 11 states have return successors, (30), 16 states have call predecessors, (30), 8 states have call successors, (30) Word has length 189 [2021-11-17 01:00:24,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 01:00:24,359 INFO L225 Difference]: With dead ends: 39578 [2021-11-17 01:00:24,359 INFO L226 Difference]: Without dead ends: 19926 [2021-11-17 01:00:24,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=149, Invalid=1657, Unknown=0, NotChecked=0, Total=1806 [2021-11-17 01:00:24,411 INFO L933 BasicCegarLoop]: 3102 mSDtfsCounter, 64 mSDsluCounter, 71229 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 74331 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-17 01:00:24,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 74331 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-17 01:00:24,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19926 states. [2021-11-17 01:00:24,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19926 to 19726. [2021-11-17 01:00:24,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19726 states, 13970 states have (on average 1.3504652827487473) internal successors, (18866), 14528 states have internal predecessors, (18866), 4440 states have call successors, (4440), 1276 states have call predecessors, (4440), 1315 states have return successors, (5334), 4316 states have call predecessors, (5334), 4439 states have call successors, (5334) [2021-11-17 01:00:25,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19726 states to 19726 states and 28640 transitions. [2021-11-17 01:00:25,012 INFO L78 Accepts]: Start accepts. Automaton has 19726 states and 28640 transitions. Word has length 189 [2021-11-17 01:00:25,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 01:00:25,013 INFO L470 AbstractCegarLoop]: Abstraction has 19726 states and 28640 transitions. [2021-11-17 01:00:25,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 4.2) internal successors, (126), 24 states have internal predecessors, (126), 9 states have call successors, (28), 2 states have call predecessors, (28), 11 states have return successors, (30), 16 states have call predecessors, (30), 8 states have call successors, (30) [2021-11-17 01:00:25,013 INFO L276 IsEmpty]: Start isEmpty. Operand 19726 states and 28640 transitions. [2021-11-17 01:00:25,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-17 01:00:25,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 01:00:25,021 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 01:00:25,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-17 01:00:25,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 01:00:25,234 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 01:00:25,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 01:00:25,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1381975453, now seen corresponding path program 1 times [2021-11-17 01:00:25,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 01:00:25,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120702034] [2021-11-17 01:00:25,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 01:00:25,236 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 01:00:25,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 01:00:25,237 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 01:00:25,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-17 01:00:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:00:26,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-17 01:00:26,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 01:00:27,221 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-17 01:00:27,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 01:00:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-17 01:00:28,401 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 01:00:28,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120702034] [2021-11-17 01:00:28,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120702034] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-17 01:00:28,401 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-17 01:00:28,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-17 01:00:28,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114426338] [2021-11-17 01:00:28,401 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-17 01:00:28,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-17 01:00:28,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 01:00:28,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-17 01:00:28,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-17 01:00:28,402 INFO L87 Difference]: Start difference. First operand 19726 states and 28640 transitions. Second operand has 14 states, 14 states have (on average 10.642857142857142) internal successors, (149), 10 states have internal predecessors, (149), 2 states have call successors, (35), 2 states have call predecessors, (35), 6 states have return successors, (36), 6 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-17 01:00:29,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 01:00:29,230 INFO L93 Difference]: Finished difference Result 39436 states and 58084 transitions. [2021-11-17 01:00:29,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-17 01:00:29,231 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.642857142857142) internal successors, (149), 10 states have internal predecessors, (149), 2 states have call successors, (35), 2 states have call predecessors, (35), 6 states have return successors, (36), 6 states have call predecessors, (36), 2 states have call successors, (36) Word has length 204 [2021-11-17 01:00:29,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 01:00:29,301 INFO L225 Difference]: With dead ends: 39436 [2021-11-17 01:00:29,302 INFO L226 Difference]: Without dead ends: 19730 [2021-11-17 01:00:29,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-11-17 01:00:29,356 INFO L933 BasicCegarLoop]: 3073 mSDtfsCounter, 7 mSDsluCounter, 24571 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 27644 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-17 01:00:29,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 27644 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-17 01:00:29,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19730 states. [2021-11-17 01:00:29,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19730 to 19706. [2021-11-17 01:00:29,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19706 states, 13960 states have (on average 1.3492836676217765) internal successors, (18836), 14518 states have internal predecessors, (18836), 4430 states have call successors, (4430), 1276 states have call predecessors, (4430), 1315 states have return successors, (5324), 4306 states have call predecessors, (5324), 4429 states have call successors, (5324) [2021-11-17 01:00:29,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19706 states to 19706 states and 28590 transitions. [2021-11-17 01:00:30,003 INFO L78 Accepts]: Start accepts. Automaton has 19706 states and 28590 transitions. Word has length 204 [2021-11-17 01:00:30,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 01:00:30,003 INFO L470 AbstractCegarLoop]: Abstraction has 19706 states and 28590 transitions. [2021-11-17 01:00:30,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.642857142857142) internal successors, (149), 10 states have internal predecessors, (149), 2 states have call successors, (35), 2 states have call predecessors, (35), 6 states have return successors, (36), 6 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-17 01:00:30,004 INFO L276 IsEmpty]: Start isEmpty. Operand 19706 states and 28590 transitions. [2021-11-17 01:00:30,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-17 01:00:30,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 01:00:30,014 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 01:00:30,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-17 01:00:30,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 01:00:30,240 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 01:00:30,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 01:00:30,240 INFO L85 PathProgramCache]: Analyzing trace with hash 800681902, now seen corresponding path program 1 times [2021-11-17 01:00:30,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 01:00:30,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602359185] [2021-11-17 01:00:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 01:00:30,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 01:00:30,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 01:00:30,242 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 01:00:30,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-17 01:00:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:00:31,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 01:00:31,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 01:00:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-11-17 01:00:32,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 01:00:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2021-11-17 01:00:32,549 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 01:00:32,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602359185] [2021-11-17 01:00:32,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602359185] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-17 01:00:32,549 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-17 01:00:32,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-17 01:00:32,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221371617] [2021-11-17 01:00:32,549 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-17 01:00:32,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 01:00:32,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 01:00:32,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 01:00:32,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 01:00:32,551 INFO L87 Difference]: Start difference. First operand 19706 states and 28590 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-17 01:00:33,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 01:00:33,303 INFO L93 Difference]: Finished difference Result 39428 states and 58022 transitions. [2021-11-17 01:00:33,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 01:00:33,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 221 [2021-11-17 01:00:33,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 01:00:33,424 INFO L225 Difference]: With dead ends: 39428 [2021-11-17 01:00:33,425 INFO L226 Difference]: Without dead ends: 19742 [2021-11-17 01:00:33,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 01:00:33,521 INFO L933 BasicCegarLoop]: 3073 mSDtfsCounter, 2 mSDsluCounter, 3069 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6142 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 01:00:33,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 6142 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 01:00:33,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19742 states. [2021-11-17 01:00:34,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19742 to 19718. [2021-11-17 01:00:34,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19718 states, 13972 states have (on average 1.3489836816490124) internal successors, (18848), 14530 states have internal predecessors, (18848), 4430 states have call successors, (4430), 1276 states have call predecessors, (4430), 1315 states have return successors, (5324), 4306 states have call predecessors, (5324), 4429 states have call successors, (5324) [2021-11-17 01:00:34,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19718 states to 19718 states and 28602 transitions. [2021-11-17 01:00:34,367 INFO L78 Accepts]: Start accepts. Automaton has 19718 states and 28602 transitions. Word has length 221 [2021-11-17 01:00:34,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 01:00:34,368 INFO L470 AbstractCegarLoop]: Abstraction has 19718 states and 28602 transitions. [2021-11-17 01:00:34,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-17 01:00:34,369 INFO L276 IsEmpty]: Start isEmpty. Operand 19718 states and 28602 transitions. [2021-11-17 01:00:34,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-17 01:00:34,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 01:00:34,377 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 01:00:34,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-17 01:00:34,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 01:00:34,580 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 01:00:34,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 01:00:34,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1316202351, now seen corresponding path program 1 times [2021-11-17 01:00:34,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 01:00:34,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362693193] [2021-11-17 01:00:34,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 01:00:34,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 01:00:34,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 01:00:34,582 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 01:00:34,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-17 01:00:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:00:36,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 01:00:36,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 01:00:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2021-11-17 01:00:36,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 01:00:36,885 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-11-17 01:00:36,885 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 01:00:36,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362693193] [2021-11-17 01:00:36,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362693193] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-17 01:00:36,886 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-17 01:00:36,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-17 01:00:36,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766830577] [2021-11-17 01:00:36,886 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-17 01:00:36,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 01:00:36,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 01:00:36,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 01:00:36,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 01:00:36,887 INFO L87 Difference]: Start difference. First operand 19718 states and 28602 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-17 01:00:37,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 01:00:37,306 INFO L93 Difference]: Finished difference Result 39420 states and 57216 transitions. [2021-11-17 01:00:37,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 01:00:37,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 221 [2021-11-17 01:00:37,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 01:00:37,396 INFO L225 Difference]: With dead ends: 39420 [2021-11-17 01:00:37,396 INFO L226 Difference]: Without dead ends: 19722 [2021-11-17 01:00:37,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 01:00:37,453 INFO L933 BasicCegarLoop]: 3069 mSDtfsCounter, 0 mSDsluCounter, 3062 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6131 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 01:00:37,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6131 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 01:00:37,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19722 states. [2021-11-17 01:00:37,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19722 to 19718. [2021-11-17 01:00:37,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19718 states, 13972 states have (on average 1.3481248210707129) internal successors, (18836), 14530 states have internal predecessors, (18836), 4430 states have call successors, (4430), 1276 states have call predecessors, (4430), 1315 states have return successors, (5324), 4306 states have call predecessors, (5324), 4429 states have call successors, (5324) [2021-11-17 01:00:38,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19718 states to 19718 states and 28590 transitions. [2021-11-17 01:00:38,045 INFO L78 Accepts]: Start accepts. Automaton has 19718 states and 28590 transitions. Word has length 221 [2021-11-17 01:00:38,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 01:00:38,045 INFO L470 AbstractCegarLoop]: Abstraction has 19718 states and 28590 transitions. [2021-11-17 01:00:38,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-17 01:00:38,045 INFO L276 IsEmpty]: Start isEmpty. Operand 19718 states and 28590 transitions. [2021-11-17 01:00:38,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-17 01:00:38,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 01:00:38,051 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 01:00:38,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-17 01:00:38,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 01:00:38,256 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 01:00:38,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 01:00:38,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1149592239, now seen corresponding path program 1 times [2021-11-17 01:00:38,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 01:00:38,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295099619] [2021-11-17 01:00:38,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 01:00:38,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 01:00:38,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 01:00:38,260 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 01:00:38,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-17 01:00:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:00:39,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 01:00:39,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 01:00:40,000 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2021-11-17 01:00:40,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 01:00:40,323 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-11-17 01:00:40,323 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 01:00:40,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295099619] [2021-11-17 01:00:40,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295099619] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-17 01:00:40,323 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-17 01:00:40,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-17 01:00:40,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872606440] [2021-11-17 01:00:40,324 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-17 01:00:40,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 01:00:40,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 01:00:40,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 01:00:40,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 01:00:40,324 INFO L87 Difference]: Start difference. First operand 19718 states and 28590 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-17 01:00:40,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 01:00:40,776 INFO L93 Difference]: Finished difference Result 42209 states and 61691 transitions. [2021-11-17 01:00:40,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 01:00:40,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 224 [2021-11-17 01:00:40,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 01:00:40,867 INFO L225 Difference]: With dead ends: 42209 [2021-11-17 01:00:40,867 INFO L226 Difference]: Without dead ends: 22511 [2021-11-17 01:00:40,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 01:00:40,927 INFO L933 BasicCegarLoop]: 3923 mSDtfsCounter, 652 mSDsluCounter, 3132 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 7055 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 01:00:40,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [825 Valid, 7055 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 01:00:40,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22511 states. [2021-11-17 01:00:41,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22511 to 19710. [2021-11-17 01:00:41,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19710 states, 13964 states have (on average 1.34775136064165) internal successors, (18820), 14522 states have internal predecessors, (18820), 4430 states have call successors, (4430), 1276 states have call predecessors, (4430), 1315 states have return successors, (5324), 4306 states have call predecessors, (5324), 4429 states have call successors, (5324) [2021-11-17 01:00:41,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19710 states to 19710 states and 28574 transitions. [2021-11-17 01:00:41,437 INFO L78 Accepts]: Start accepts. Automaton has 19710 states and 28574 transitions. Word has length 224 [2021-11-17 01:00:41,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 01:00:41,438 INFO L470 AbstractCegarLoop]: Abstraction has 19710 states and 28574 transitions. [2021-11-17 01:00:41,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-17 01:00:41,438 INFO L276 IsEmpty]: Start isEmpty. Operand 19710 states and 28574 transitions. [2021-11-17 01:00:41,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-17 01:00:41,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 01:00:41,444 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 01:00:41,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-17 01:00:41,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 01:00:41,645 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 01:00:41,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 01:00:41,645 INFO L85 PathProgramCache]: Analyzing trace with hash 619015760, now seen corresponding path program 1 times [2021-11-17 01:00:41,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 01:00:41,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726088465] [2021-11-17 01:00:41,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 01:00:41,647 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 01:00:41,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 01:00:41,647 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 01:00:41,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-17 01:00:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:00:43,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 1522 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 01:00:43,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 01:00:43,417 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2021-11-17 01:00:43,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 01:00:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-11-17 01:00:43,758 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 01:00:43,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726088465] [2021-11-17 01:00:43,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726088465] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-17 01:00:43,759 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-17 01:00:43,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-17 01:00:43,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833267992] [2021-11-17 01:00:43,759 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-17 01:00:43,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 01:00:43,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 01:00:43,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 01:00:43,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 01:00:43,760 INFO L87 Difference]: Start difference. First operand 19710 states and 28574 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-17 01:00:44,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 01:00:44,319 INFO L93 Difference]: Finished difference Result 39376 states and 57076 transitions. [2021-11-17 01:00:44,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 01:00:44,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 229 [2021-11-17 01:00:44,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 01:00:44,415 INFO L225 Difference]: With dead ends: 39376 [2021-11-17 01:00:44,415 INFO L226 Difference]: Without dead ends: 19686 [2021-11-17 01:00:44,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 01:00:44,475 INFO L933 BasicCegarLoop]: 3052 mSDtfsCounter, 0 mSDsluCounter, 3049 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6101 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-17 01:00:44,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6101 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-17 01:00:44,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19686 states. [2021-11-17 01:00:44,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19686 to 19686. [2021-11-17 01:00:44,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19686 states, 13952 states have (on average 1.347190366972477) internal successors, (18796), 14510 states have internal predecessors, (18796), 4418 states have call successors, (4418), 1276 states have call predecessors, (4418), 1315 states have return successors, (5312), 4294 states have call predecessors, (5312), 4417 states have call successors, (5312) [2021-11-17 01:00:45,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19686 states to 19686 states and 28526 transitions. [2021-11-17 01:00:45,030 INFO L78 Accepts]: Start accepts. Automaton has 19686 states and 28526 transitions. Word has length 229 [2021-11-17 01:00:45,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 01:00:45,031 INFO L470 AbstractCegarLoop]: Abstraction has 19686 states and 28526 transitions. [2021-11-17 01:00:45,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-17 01:00:45,032 INFO L276 IsEmpty]: Start isEmpty. Operand 19686 states and 28526 transitions. [2021-11-17 01:00:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-17 01:00:45,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 01:00:45,038 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 01:00:45,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-17 01:00:45,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 01:00:45,239 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 01:00:45,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 01:00:45,240 INFO L85 PathProgramCache]: Analyzing trace with hash 817459335, now seen corresponding path program 1 times [2021-11-17 01:00:45,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 01:00:45,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306891824] [2021-11-17 01:00:45,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 01:00:45,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 01:00:45,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 01:00:45,244 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 01:00:45,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-17 01:00:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:00:46,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 01:00:46,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 01:00:47,649 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-11-17 01:00:47,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 01:00:48,077 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2021-11-17 01:00:48,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 01:00:48,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306891824] [2021-11-17 01:00:48,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306891824] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-17 01:00:48,078 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-17 01:00:48,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-17 01:00:48,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307924763] [2021-11-17 01:00:48,078 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-17 01:00:48,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 01:00:48,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 01:00:48,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 01:00:48,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-17 01:00:48,079 INFO L87 Difference]: Start difference. First operand 19686 states and 28526 transitions. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 4 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-17 01:00:50,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:00:50,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 01:00:50,974 INFO L93 Difference]: Finished difference Result 39581 states and 57331 transitions. [2021-11-17 01:00:50,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 01:00:50,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 4 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 229 [2021-11-17 01:00:50,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 01:00:51,083 INFO L225 Difference]: With dead ends: 39581 [2021-11-17 01:00:51,083 INFO L226 Difference]: Without dead ends: 19701 [2021-11-17 01:00:51,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-17 01:00:51,150 INFO L933 BasicCegarLoop]: 3513 mSDtfsCounter, 3141 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3141 SdHoareTripleChecker+Valid, 4305 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-17 01:00:51,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3141 Valid, 4305 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 66 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-17 01:00:51,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19701 states. [2021-11-17 01:00:51,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19701 to 19682. [2021-11-17 01:00:51,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19682 states, 13949 states have (on average 1.34762348555452) internal successors, (18798), 14509 states have internal predecessors, (18798), 4410 states have call successors, (4410), 1283 states have call predecessors, (4410), 1322 states have return successors, (5281), 4286 states have call predecessors, (5281), 4409 states have call successors, (5281) [2021-11-17 01:00:52,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19682 states to 19682 states and 28489 transitions. [2021-11-17 01:00:52,018 INFO L78 Accepts]: Start accepts. Automaton has 19682 states and 28489 transitions. Word has length 229 [2021-11-17 01:00:52,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 01:00:52,019 INFO L470 AbstractCegarLoop]: Abstraction has 19682 states and 28489 transitions. [2021-11-17 01:00:52,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 4 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-17 01:00:52,020 INFO L276 IsEmpty]: Start isEmpty. Operand 19682 states and 28489 transitions. [2021-11-17 01:00:52,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-17 01:00:52,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 01:00:52,030 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 01:00:52,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-17 01:00:52,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 01:00:52,251 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 01:00:52,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 01:00:52,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1285672724, now seen corresponding path program 1 times [2021-11-17 01:00:52,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 01:00:52,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744005723] [2021-11-17 01:00:52,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 01:00:52,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 01:00:52,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 01:00:52,255 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 01:00:52,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-17 01:01:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:01:03,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 130 conjunts are in the unsatisfiable core [2021-11-17 01:01:03,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 01:01:03,321 INFO L354 Elim1Store]: treesize reduction 288, result has 0.3 percent of original size [2021-11-17 01:01:03,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 525 treesize of output 507 [2021-11-17 01:01:03,393 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-17 01:01:03,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 235 treesize of output 227 [2021-11-17 01:01:03,423 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-17 01:01:03,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 197 treesize of output 189 [2021-11-17 01:01:04,282 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-11-17 01:01:04,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 50 [2021-11-17 01:01:04,790 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-11-17 01:01:04,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 50 [2021-11-17 01:01:05,279 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-11-17 01:01:05,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 50 [2021-11-17 01:01:05,780 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-11-17 01:01:05,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 50 [2021-11-17 01:01:06,353 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-11-17 01:01:06,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 50 [2021-11-17 01:01:06,906 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-11-17 01:01:06,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 50 [2021-11-17 01:01:07,450 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-11-17 01:01:07,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 50 [2021-11-17 01:01:07,976 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-11-17 01:01:07,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 50 [2021-11-17 01:01:10,034 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-11-17 01:01:10,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 50 [2021-11-17 01:01:10,545 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-11-17 01:01:10,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 50 [2021-11-17 01:01:13,842 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-11-17 01:01:13,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 50 [2021-11-17 01:01:15,334 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-11-17 01:01:15,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 50 [2021-11-17 01:01:15,942 INFO L388 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 11 treesize of output 10 [2021-11-17 01:01:18,341 INFO L388 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 11 treesize of output 10 [2021-11-17 01:01:22,361 INFO L388 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 27 treesize of output 26 [2021-11-17 01:01:33,956 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 01:01:33,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744005723] [2021-11-17 01:01:33,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: need array sort [2021-11-17 01:01:33,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1729197560] [2021-11-17 01:01:33,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 01:01:33,956 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-17 01:01:33,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-11-17 01:01:33,957 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-17 01:01:33,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-17 01:02:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:02:18,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 121 conjunts are in the unsatisfiable core [2021-11-17 01:02:18,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@5af9d546 [2021-11-17 01:02:18,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263573999] [2021-11-17 01:02:18,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 01:02:18,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 01:02:18,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 01:02:18,217 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 01:02:18,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-17 01:02:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:02:21,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 111 conjunts are in the unsatisfiable core [2021-11-17 01:02:21,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@5af9d546 [2021-11-17 01:02:21,355 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-17 01:02:21,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-17 01:02:21,355 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-11-17 01:02:21,355 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-17 01:02:21,361 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-17 01:02:21,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-17 01:02:21,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-11-17 01:02:21,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-17 01:02:21,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 01:02:21,972 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 01:02:21,973 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-17 01:02:22,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 01:02:22 BoogieIcfgContainer [2021-11-17 01:02:22,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-17 01:02:22,013 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-17 01:02:22,014 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-17 01:02:22,014 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-17 01:02:22,017 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:59:36" (3/4) ... [2021-11-17 01:02:22,019 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-17 01:02:22,019 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-17 01:02:22,020 INFO L158 Benchmark]: Toolchain (without parser) took 189499.44ms. Allocated memory was 52.4MB in the beginning and 3.5GB in the end (delta: 3.4GB). Free memory was 25.2MB in the beginning and 2.1GB in the end (delta: -2.1GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2021-11-17 01:02:22,020 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 52.4MB. Free memory was 34.2MB in the beginning and 34.1MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-17 01:02:22,022 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2124.11ms. Allocated memory was 52.4MB in the beginning and 161.5MB in the end (delta: 109.1MB). Free memory was 25.1MB in the beginning and 90.4MB in the end (delta: -65.4MB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. [2021-11-17 01:02:22,022 INFO L158 Benchmark]: Boogie Procedure Inliner took 227.72ms. Allocated memory is still 161.5MB. Free memory was 90.4MB in the beginning and 57.8MB in the end (delta: 32.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2021-11-17 01:02:22,022 INFO L158 Benchmark]: Boogie Preprocessor took 230.18ms. Allocated memory is still 161.5MB. Free memory was 57.8MB in the beginning and 47.5MB in the end (delta: 10.2MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2021-11-17 01:02:22,022 INFO L158 Benchmark]: RCFGBuilder took 20982.34ms. Allocated memory was 161.5MB in the beginning and 448.8MB in the end (delta: 287.3MB). Free memory was 47.5MB in the beginning and 244.6MB in the end (delta: -197.0MB). Peak memory consumption was 106.8MB. Max. memory is 16.1GB. [2021-11-17 01:02:22,023 INFO L158 Benchmark]: TraceAbstraction took 165923.61ms. Allocated memory was 448.8MB in the beginning and 3.5GB in the end (delta: 3.0GB). Free memory was 243.5MB in the beginning and 2.1GB in the end (delta: -1.9GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2021-11-17 01:02:22,026 INFO L158 Benchmark]: Witness Printer took 6.16ms. Allocated memory is still 3.5GB. Free memory is still 2.1GB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-17 01:02:22,026 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 52.4MB. Free memory was 34.2MB in the beginning and 34.1MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2124.11ms. Allocated memory was 52.4MB in the beginning and 161.5MB in the end (delta: 109.1MB). Free memory was 25.1MB in the beginning and 90.4MB in the end (delta: -65.4MB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 227.72ms. Allocated memory is still 161.5MB. Free memory was 90.4MB in the beginning and 57.8MB in the end (delta: 32.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 230.18ms. Allocated memory is still 161.5MB. Free memory was 57.8MB in the beginning and 47.5MB in the end (delta: 10.2MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * RCFGBuilder took 20982.34ms. Allocated memory was 161.5MB in the beginning and 448.8MB in the end (delta: 287.3MB). Free memory was 47.5MB in the beginning and 244.6MB in the end (delta: -197.0MB). Peak memory consumption was 106.8MB. Max. memory is 16.1GB. * TraceAbstraction took 165923.61ms. Allocated memory was 448.8MB in the beginning and 3.5GB in the end (delta: 3.0GB). Free memory was 243.5MB in the beginning and 2.1GB in the end (delta: -1.9GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 6.16ms. Allocated memory is still 3.5GB. Free memory is still 2.1GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 6954]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint, overapproximation of __builtin_object_size at line 6461, overapproximation of large string literal at line 7220. Possible FailurePath: [L6977] struct net_device *ppp_netdev_ops_group1 ; [L6978] int ldv_state_variable_3 ; [L6979] int LDV_IN_INTERRUPT = 1; [L6980] int ldv_state_variable_2 ; [L6981] struct inode *ppp_device_fops_group1 ; [L6982] struct net *ppp_net_ops_group0 ; [L6983] int ref_cnt ; [L6984] struct file *ppp_device_fops_group2 ; [L6985] int ldv_state_variable_1 ; [L6986] int ldv_state_variable_0 ; [L7220-L7223] static struct mutex ppp_mutex = {{1}, {{{{{0U}}, 3735899821U, 4294967295U, (void *)-1, {0, {0, 0}, "ppp_mutex.wait_lock", 0, 0UL}}}}, {& ppp_mutex.wait_list, & ppp_mutex.wait_list}, 0, 0, (void *)(& ppp_mutex), {0, {0, 0}, "ppp_mutex", 0, 0UL}}; [L7224] static atomic_t ppp_unit_count = {0}; [L7225] static atomic_t channel_count = {0}; [L7226] static int ppp_net_id ; [L7259] static struct class *ppp_class ; [L7298-L7299] static int const npindex_to_proto[6U] = { 33, 87, 43, 41, 641, 643}; [L7321-L7322] static int const npindex_to_ethertype[6U] = { 2048, 34525, 33079, 16, 34887, 34888}; [L8167-L8170] static struct file_operations const ppp_device_fops = {& __this_module, & noop_llseek, & ppp_read, & ppp_write, 0, 0, 0, 0, 0, & ppp_poll, & ppp_ioctl, 0, 0, & ppp_open, 0, & ppp_release, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; [L8201] static struct pernet_operations ppp_net_ops = {{0, 0}, & ppp_init_net, & ppp_exit_net, 0, & ppp_net_id, 392UL}; [L8372] static struct lock_class_key ppp_tx_busylock ; [L8380-L8384] static struct net_device_ops const ppp_netdev_ops = {& ppp_dev_init, 0, 0, 0, & ppp_start_xmit, 0, 0, 0, 0, 0, & ppp_net_ioctl, 0, 0, 0, 0, & ppp_get_stats64, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; [L8660] static bool mp_protocol_compress = 1; [L9972] static struct list_head compressor_list = {& compressor_list, & compressor_list}; [L9973-L9974] static spinlock_t compressor_list_lock = {{{{{0U}}, 3735899821U, 4294967295U, (void *)-1, {0, {0, 0}, "compressor_list_lock", 0, 0UL}}}}; [L10460-L10467] static char const __kstrtab_ppp_register_net_channel[25U] = { 'p', 'p', 'p', '_', 'r', 'e', 'g', 'i', 's', 't', 'e', 'r', '_', 'n', 'e', 't', '_', 'c', 'h', 'a', 'n', 'n', 'e', 'l', '\000'}; [L10469] struct kernel_symbol const __ksymtab_ppp_register_net_channel = {(unsigned long )(& ppp_register_net_channel), (char const *)(& __kstrtab_ppp_register_net_channel)}; [L10470-L10476] static char const __kstrtab_ppp_register_channel[21U] = { 'p', 'p', 'p', '_', 'r', 'e', 'g', 'i', 's', 't', 'e', 'r', '_', 'c', 'h', 'a', 'n', 'n', 'e', 'l', '\000'}; [L10478] struct kernel_symbol const __ksymtab_ppp_register_channel = {(unsigned long )(& ppp_register_channel), (char const *)(& __kstrtab_ppp_register_channel)}; [L10479-L10485] static char const __kstrtab_ppp_unregister_channel[23U] = { 'p', 'p', 'p', '_', 'u', 'n', 'r', 'e', 'g', 'i', 's', 't', 'e', 'r', '_', 'c', 'h', 'a', 'n', 'n', 'e', 'l', '\000'}; [L10487] struct kernel_symbol const __ksymtab_ppp_unregister_channel = {(unsigned long )(& ppp_unregister_channel), (char const *)(& __kstrtab_ppp_unregister_channel)}; [L10488-L10493] static char const __kstrtab_ppp_channel_index[18U] = { 'p', 'p', 'p', '_', 'c', 'h', 'a', 'n', 'n', 'e', 'l', '_', 'i', 'n', 'd', 'e', 'x', '\000'}; [L10495] struct kernel_symbol const __ksymtab_ppp_channel_index = {(unsigned long )(& ppp_channel_index), (char const *)(& __kstrtab_ppp_channel_index)}; [L10496-L10500] static char const __kstrtab_ppp_unit_number[16U] = { 'p', 'p', 'p', '_', 'u', 'n', 'i', 't', '_', 'n', 'u', 'm', 'b', 'e', 'r', '\000'}; [L10502] struct kernel_symbol const __ksymtab_ppp_unit_number = {(unsigned long )(& ppp_unit_number), (char const *)(& __kstrtab_ppp_unit_number)}; [L10503-L10507] static char const __kstrtab_ppp_dev_name[13U] = { 'p', 'p', 'p', '_', 'd', 'e', 'v', '_', 'n', 'a', 'm', 'e', '\000'}; [L10509] struct kernel_symbol const __ksymtab_ppp_dev_name = {(unsigned long )(& ppp_dev_name), (char const *)(& __kstrtab_ppp_dev_name)}; [L10510-L10513] static char const __kstrtab_ppp_input[10U] = { 'p', 'p', 'p', '_', 'i', 'n', 'p', 'u', 't', '\000'}; [L10515] struct kernel_symbol const __ksymtab_ppp_input = {(unsigned long )(& ppp_input), (char const *)(& __kstrtab_ppp_input)}; [L10516-L10520] static char const __kstrtab_ppp_input_error[16U] = { 'p', 'p', 'p', '_', 'i', 'n', 'p', 'u', 't', '_', 'e', 'r', 'r', 'o', 'r', '\000'}; [L10522] struct kernel_symbol const __ksymtab_ppp_input_error = {(unsigned long )(& ppp_input_error), (char const *)(& __kstrtab_ppp_input_error)}; [L10523-L10528] static char const __kstrtab_ppp_output_wakeup[18U] = { 'p', 'p', 'p', '_', 'o', 'u', 't', 'p', 'u', 't', '_', 'w', 'a', 'k', 'e', 'u', 'p', '\000'}; [L10530] struct kernel_symbol const __ksymtab_ppp_output_wakeup = {(unsigned long )(& ppp_output_wakeup), (char const *)(& __kstrtab_ppp_output_wakeup)}; [L10531-L10537] static char const __kstrtab_ppp_register_compressor[24U] = { 'p', 'p', 'p', '_', 'r', 'e', 'g', 'i', 's', 't', 'e', 'r', '_', 'c', 'o', 'm', 'p', 'r', 'e', 's', 's', 'o', 'r', '\000'}; [L10539] struct kernel_symbol const __ksymtab_ppp_register_compressor = {(unsigned long )(& ppp_register_compressor), (char const *)(& __kstrtab_ppp_register_compressor)}; [L10540-L10547] static char const __kstrtab_ppp_unregister_compressor[26U] = { 'p', 'p', 'p', '_', 'u', 'n', 'r', 'e', 'g', 'i', 's', 't', 'e', 'r', '_', 'c', 'o', 'm', 'p', 'r', 'e', 's', 's', 'o', 'r', '\000'}; [L10549] struct kernel_symbol const __ksymtab_ppp_unregister_compressor = {(unsigned long )(& ppp_unregister_compressor), (char const *)(& __kstrtab_ppp_unregister_compressor)}; [L10550] int ldv_retval_2 ; [L10552] int ldv_retval_0 ; [L10554] int ldv_retval_1 ; [L10557] int ldv_retval_3 ; [L11316] Element set_impl[15] ; [L11317] int last_index = 0; [L11451] Set LDV_SKBS ; [L10591] struct sk_buff *ldvarg1 ; [L10592] void *tmp ; [L10593] struct ifreq *ldvarg3 ; [L10594] void *tmp___0 ; [L10595] struct rtnl_link_stats64 *ldvarg0 ; [L10596] void *tmp___1 ; [L10597] int ldvarg2 ; [L10598] int tmp___2 ; [L10599] char *ldvarg11 ; [L10600] void *tmp___3 ; [L10601] loff_t ldvarg7 ; [L10602] loff_t tmp___4 ; [L10603] loff_t *ldvarg12 ; [L10604] void *tmp___5 ; [L10605] unsigned int ldvarg5 ; [L10606] unsigned int tmp___6 ; [L10607] int ldvarg6 ; [L10608] int tmp___7 ; [L10609] struct poll_table_struct *ldvarg8 ; [L10610] void *tmp___8 ; [L10611] char *ldvarg14 ; [L10612] void *tmp___9 ; [L10613] unsigned long ldvarg4 ; [L10614] unsigned long tmp___10 ; [L10615] size_t ldvarg13 ; [L10616] size_t tmp___11 ; [L10617] size_t ldvarg10 ; [L10618] size_t tmp___12 ; [L10619] loff_t *ldvarg9 ; [L10620] void *tmp___13 ; [L10621] int tmp___14 ; [L10622] int tmp___15 ; [L10623] int tmp___16 ; [L10624] int tmp___17 ; [L10625] int tmp___18 ; [L10627] CALL, EXPR ldv_zalloc(232UL) [L6918] void *p ; [L6919] void *tmp ; [L6920] int tmp___0 ; [L6922] tmp___0 = __VERIFIER_nondet_int() [L6923] COND TRUE tmp___0 != 0 [L6924] return ((void *)0); [L10627] RET, EXPR ldv_zalloc(232UL) [L10627] tmp = ldv_zalloc(232UL) [L10628] ldvarg1 = (struct sk_buff *)tmp [L10629] CALL, EXPR ldv_zalloc(40UL) [L6918] void *p ; [L6919] void *tmp ; [L6920] int tmp___0 ; [L6922] tmp___0 = __VERIFIER_nondet_int() [L6923] COND TRUE tmp___0 != 0 [L6924] return ((void *)0); [L10629] RET, EXPR ldv_zalloc(40UL) [L10629] tmp___0 = ldv_zalloc(40UL) [L10630] ldvarg3 = (struct ifreq *)tmp___0 [L10631] CALL, EXPR ldv_zalloc(184UL) [L6918] void *p ; [L6919] void *tmp ; [L6920] int tmp___0 ; [L6922] tmp___0 = __VERIFIER_nondet_int() [L6923] COND TRUE tmp___0 != 0 [L6924] return ((void *)0); [L10631] RET, EXPR ldv_zalloc(184UL) [L10631] tmp___1 = ldv_zalloc(184UL) [L10632] ldvarg0 = (struct rtnl_link_stats64 *)tmp___1 [L10633] tmp___2 = __VERIFIER_nondet_int() [L10634] ldvarg2 = tmp___2 [L10635] CALL, EXPR ldv_zalloc(1UL) [L6918] void *p ; [L6919] void *tmp ; [L6920] int tmp___0 ; [L6922] tmp___0 = __VERIFIER_nondet_int() [L6923] COND TRUE tmp___0 != 0 [L6924] return ((void *)0); [L10635] RET, EXPR ldv_zalloc(1UL) [L10635] tmp___3 = ldv_zalloc(1UL) [L10636] ldvarg11 = (char *)tmp___3 [L10637] tmp___4 = __VERIFIER_nondet_loff_t() [L10638] ldvarg7 = tmp___4 [L10639] CALL, EXPR ldv_zalloc(8UL) [L6918] void *p ; [L6919] void *tmp ; [L6920] int tmp___0 ; [L6922] tmp___0 = __VERIFIER_nondet_int() [L6923] COND TRUE tmp___0 != 0 [L6924] return ((void *)0); [L10639] RET, EXPR ldv_zalloc(8UL) [L10639] tmp___5 = ldv_zalloc(8UL) [L10640] ldvarg12 = (loff_t *)tmp___5 [L10641] tmp___6 = __VERIFIER_nondet_uint() [L10642] ldvarg5 = tmp___6 [L10643] tmp___7 = __VERIFIER_nondet_int() [L10644] ldvarg6 = tmp___7 [L10645] CALL, EXPR ldv_zalloc(16UL) [L6918] void *p ; [L6919] void *tmp ; [L6920] int tmp___0 ; [L6922] tmp___0 = __VERIFIER_nondet_int() [L6923] COND TRUE tmp___0 != 0 [L6924] return ((void *)0); [L10645] RET, EXPR ldv_zalloc(16UL) [L10645] tmp___8 = ldv_zalloc(16UL) [L10646] ldvarg8 = (struct poll_table_struct *)tmp___8 [L10647] CALL, EXPR ldv_zalloc(1UL) [L6918] void *p ; [L6919] void *tmp ; [L6920] int tmp___0 ; [L6922] tmp___0 = __VERIFIER_nondet_int() [L6923] COND TRUE tmp___0 != 0 [L6924] return ((void *)0); [L10647] RET, EXPR ldv_zalloc(1UL) [L10647] tmp___9 = ldv_zalloc(1UL) [L10648] ldvarg14 = (char *)tmp___9 [L10649] tmp___10 = __VERIFIER_nondet_ulong() [L10650] ldvarg4 = tmp___10 [L10651] tmp___11 = __VERIFIER_nondet_size_t() [L10652] ldvarg13 = tmp___11 [L10653] tmp___12 = __VERIFIER_nondet_size_t() [L10654] ldvarg10 = tmp___12 [L10655] CALL, EXPR ldv_zalloc(8UL) [L6918] void *p ; [L6919] void *tmp ; [L6920] int tmp___0 ; [L6922] tmp___0 = __VERIFIER_nondet_int() [L6923] COND TRUE tmp___0 != 0 [L6924] return ((void *)0); [L10655] RET, EXPR ldv_zalloc(8UL) [L10655] tmp___13 = ldv_zalloc(8UL) [L10656] ldvarg9 = (loff_t *)tmp___13 [L10657] CALL ldv_initialize() [L11470] CALL ldv_set_init(LDV_SKBS) [L11322] set = set_impl [L11323] last_index = 0 [L11470] RET ldv_set_init(LDV_SKBS) [L10657] RET ldv_initialize() [L10658] ldv_state_variable_1 = 0 [L10659] ref_cnt = 0 [L10660] ldv_state_variable_0 = 1 [L10661] ldv_state_variable_3 = 0 [L10662] ldv_state_variable_2 = 0 [L10664] tmp___14 = __VERIFIER_nondet_int() [L10666] case 0: [L10754] case 1: [L10755] COND TRUE ldv_state_variable_0 != 0 [L10756] tmp___16 = __VERIFIER_nondet_int() [L10758] case 0: [L10766] case 1: [L10767] COND TRUE ldv_state_variable_0 == 1 [L10768] CALL, EXPR ppp_init() [L8204] int err ; [L8205] struct lock_class_key __key ; [L8206] struct class *tmp ; [L8207] long tmp___0 ; [L8208] bool tmp___1 ; [L8211] CALL, EXPR register_pernet_device(& ppp_net_ops) [L11745] return __VERIFIER_nondet_int(); [L8211] RET, EXPR register_pernet_device(& ppp_net_ops) [L8211] err = register_pernet_device(& ppp_net_ops) [L8212] COND FALSE !(err != 0) [L8217] CALL, EXPR ldv_register_chrdev_18(108U, "ppp", & ppp_device_fops) [L10996] ldv_func_ret_type ldv_func_res ; [L10997] int tmp ; [L10999] CALL, EXPR register_chrdev(major, name, fops) [L6998] int tmp ; [L7000] CALL, EXPR __register_chrdev(major, 0U, 256U, name, fops) [L11569] return __VERIFIER_nondet_int(); [L7000] RET, EXPR __register_chrdev(major, 0U, 256U, name, fops) [L7000] tmp = __register_chrdev(major, 0U, 256U, name, fops) [L7001] return (tmp); [L10999] RET, EXPR register_chrdev(major, name, fops) [L10999] tmp = register_chrdev(major, name, fops) [L11000] ldv_func_res = tmp [L11001] ldv_state_variable_3 = 1 [L11002] CALL ldv_file_operations_3() [L10579] void *tmp ; [L10580] void *tmp___0 ; [L10582] CALL, EXPR ldv_zalloc(1032UL) [L6918] void *p ; [L6919] void *tmp ; [L6920] int tmp___0 ; [L6922] tmp___0 = __VERIFIER_nondet_int() [L6923] COND TRUE tmp___0 != 0 [L6924] return ((void *)0); [L10582] RET, EXPR ldv_zalloc(1032UL) [L10582] tmp = ldv_zalloc(1032UL) [L10583] ppp_device_fops_group1 = (struct inode *)tmp [L10584] CALL, EXPR ldv_zalloc(512UL) [L6918] void *p ; [L6919] void *tmp ; [L6920] int tmp___0 ; [L6922] tmp___0 = __VERIFIER_nondet_int() [L6923] COND TRUE tmp___0 != 0 [L6924] return ((void *)0); [L10584] RET, EXPR ldv_zalloc(512UL) [L10584] tmp___0 = ldv_zalloc(512UL) [L10585] ppp_device_fops_group2 = (struct file *)tmp___0 [L11002] RET ldv_file_operations_3() [L11003] return (ldv_func_res); [L8217] RET, EXPR ldv_register_chrdev_18(108U, "ppp", & ppp_device_fops) [L8217] err = ldv_register_chrdev_18(108U, "ppp", & ppp_device_fops) [L8218] COND FALSE !(err != 0) [L8223] CALL, EXPR __class_create(& __this_module, "ppp", & __key) [L11532] CALL, EXPR ldv_malloc(sizeof(struct class)) [L6900] void *p ; [L6901] void *tmp ; [L6902] int tmp___0 ; [L6904] tmp___0 = __VERIFIER_nondet_int() [L6905] COND TRUE tmp___0 != 0 [L6906] return ((void *)0); [L11532] RET, EXPR ldv_malloc(sizeof(struct class)) [L11532] return ldv_malloc(sizeof(struct class)); [L8223] RET, EXPR __class_create(& __this_module, "ppp", & __key) [L8223] tmp = __class_create(& __this_module, "ppp", & __key) [L8224] ppp_class = tmp [L8225] CALL, EXPR IS_ERR((void const *)ppp_class) [L10910] bool tmp ; [L10912] CALL, EXPR ldv_is_err(ptr) [L11418] return ((unsigned long )ptr > 2012UL); [L10912] RET, EXPR ldv_is_err(ptr) [L10912] tmp = ldv_is_err(ptr) [L10913] return (tmp); [L8225] RET, EXPR IS_ERR((void const *)ppp_class) [L8225] tmp___1 = IS_ERR((void const *)ppp_class) [L8226] COND FALSE !((int )tmp___1) [L8233] return (0); [L8233] return (0); [L10768] RET, EXPR ppp_init() [L10768] ldv_retval_2 = ppp_init() [L10769] COND FALSE !(ldv_retval_2 != 0) [L10774] COND TRUE ldv_retval_2 == 0 [L10775] ldv_state_variable_0 = 2 [L10776] ldv_state_variable_2 = 1 [L10777] CALL ldv_initialize_pernet_operations_2() [L10561] void *tmp ; [L10563] CALL, EXPR ldv_zalloc(7168UL) [L6918] void *p ; [L6919] void *tmp ; [L6920] int tmp___0 ; [L6922] tmp___0 = __VERIFIER_nondet_int() [L6923] COND TRUE tmp___0 != 0 [L6924] return ((void *)0); [L10563] RET, EXPR ldv_zalloc(7168UL) [L10563] tmp = ldv_zalloc(7168UL) [L10564] ppp_net_ops_group0 = (struct net *)tmp [L10777] RET ldv_initialize_pernet_operations_2() [L10664] tmp___14 = __VERIFIER_nondet_int() [L10666] case 0: [L10754] case 1: [L10790] case 2: [L10791] COND TRUE ldv_state_variable_3 != 0 [L10792] tmp___17 = __VERIFIER_nondet_int() [L10794] case 0: [L10795] COND TRUE ldv_state_variable_3 == 1 [L10796] CALL ppp_write(ppp_device_fops_group2, (char const *)ldvarg14, ldvarg13, ldvarg12) [L7534] struct ppp_file *pf ; [L7535] struct sk_buff *skb ; [L7536] ssize_t ret ; [L7537] unsigned char *tmp ; [L7538] unsigned long tmp___0 ; [L7539] struct ppp_file const *__mptr ; [L7540] struct ppp_file const *__mptr___0 ; [L7542] EXPR file->private_data [L7542] pf = (struct ppp_file *)file->private_data [L7543] COND FALSE !((unsigned long )pf == (unsigned long )((struct ppp_file *)0)) [L7547] ret = -12L [L7548] EXPR pf->hdrlen [L7548] CALL, EXPR ldv_alloc_skb_16((unsigned int )pf->hdrlen + (unsigned int )count, 208U) [L10975] struct sk_buff *tmp ; [L10977] CALL, EXPR ldv_skb_alloc() [L11454] void *skb ; [L11455] void *tmp___7 ; [L11457] CALL, EXPR ldv_zalloc(sizeof(struct sk_buff___0 )) [L6918] void *p ; [L6919] void *tmp ; [L6920] int tmp___0 ; [L6922] tmp___0 = __VERIFIER_nondet_int() [L6923] COND FALSE !(tmp___0 != 0) [L6926] EXPR, FCALL calloc(1UL, size) [L6926] tmp = calloc(1UL, size) [L6927] p = tmp [L6928] CALL assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) [L6895] COND FALSE !(!cond) [L6928] RET assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) [L6929] CALL, EXPR IS_ERR(p) [L10910] bool tmp ; [L10912] CALL, EXPR ldv_is_err(ptr) [L11418] return ((unsigned long )ptr > 2012UL); [L10912] RET, EXPR ldv_is_err(ptr) [L10912] tmp = ldv_is_err(ptr) [L10913] return (tmp); [L6929] RET, EXPR IS_ERR(p) [L6929] CALL assume_abort_if_not(IS_ERR(p) == 0) [L6895] COND FALSE !(!cond) [L6929] RET assume_abort_if_not(IS_ERR(p) == 0) [L6930] return (p); [L11457] RET, EXPR ldv_zalloc(sizeof(struct sk_buff___0 )) [L11457] tmp___7 = ldv_zalloc(sizeof(struct sk_buff___0 )) [L11458] skb = (struct sk_buff___0 *)tmp___7 [L11459] COND FALSE !(! skb) [L11462] CALL ldv_set_add(LDV_SKBS, skb) [L11330] int i ; [L11332] i = 0 [L11333] COND TRUE 1 [L11334] COND FALSE !(i < last_index) [L11344] COND TRUE last_index < 15 [L11345] set_impl[last_index] = e [L11346] last_index = last_index + 1 [L11462] RET ldv_set_add(LDV_SKBS, skb) [L11463] return (skb); [L10977] RET, EXPR ldv_skb_alloc() [L10977] tmp = ldv_skb_alloc() [L10978] COND TRUE \read(*tmp) [L10980] CALL, EXPR ldv_malloc(size) [L6900] void *p ; [L6901] void *tmp ; [L6902] int tmp___0 ; [L6904] tmp___0 = __VERIFIER_nondet_int() [L6905] COND TRUE tmp___0 != 0 [L6906] return ((void *)0); [L10980] RET, EXPR ldv_malloc(size) [L10980] tmp->head = ldv_malloc(size) [L10981] EXPR tmp->head [L10981] tmp->data = tmp->head [L10983] return (tmp); [L7548] RET, EXPR ldv_alloc_skb_16((unsigned int )pf->hdrlen + (unsigned int )count, 208U) [L7548] skb = ldv_alloc_skb_16((unsigned int )pf->hdrlen + (unsigned int )count, 208U) [L7549] COND FALSE !((unsigned long )skb == (unsigned long )((struct sk_buff *)0)) [L7553] EXPR pf->hdrlen [L7553] CALL skb_reserve(skb, pf->hdrlen) [L6822] EXPR skb->data [L6822] skb->data = skb->data + (unsigned long )len [L6823] EXPR skb->tail [L6823] skb->tail = skb->tail + (sk_buff_data_t )len [L7553] RET skb_reserve(skb, pf->hdrlen) [L7554] ret = -14L [L7555] CALL, EXPR skb_put(skb, (unsigned int )count) [L11782] EXPR arg0->data [L11782] EXPR arg0->tail [L11782] unsigned char *ret_val = arg0->data + arg0->tail; [L11783] EXPR arg0->tail [L11783] arg0->tail += arg1 [L11784] return ret_val; [L7555] RET, EXPR skb_put(skb, (unsigned int )count) [L7555] tmp = skb_put(skb, (unsigned int )count) [L7556] CALL, EXPR copy_from_user((void *)tmp, (void const *)buf, count) [L6456] int sz ; [L6457] unsigned long tmp ; [L6458] long tmp___0 ; [L6459] long tmp___1 ; [L6461] tmp = __builtin_object_size((void const *)to, 0) [L6462] sz = (int )tmp [L6463] FCALL might_fault() [L6464] CALL, EXPR ldv__builtin_expect(sz < 0, 1L) [L6967] return (exp); [L6464] RET, EXPR ldv__builtin_expect(sz < 0, 1L) [L6464] tmp___0 = ldv__builtin_expect(sz < 0, 1L) [L6465] COND TRUE tmp___0 != 0L [L6466] CALL, EXPR _copy_from_user(to, from, (unsigned int )n) [L11586] return __VERIFIER_nondet_ulong(); [L6466] RET, EXPR _copy_from_user(to, from, (unsigned int )n) [L6466] n = _copy_from_user(to, from, (unsigned int )n) [L6475] return (n); [L7556] RET, EXPR copy_from_user((void *)tmp, (void const *)buf, count) [L7556] tmp___0 = copy_from_user((void *)tmp, (void const *)buf, count) [L7557] COND FALSE !(tmp___0 != 0UL) [L7562] FCALL skb_queue_tail(& pf->xq, skb) [L7563] pf->kind [L7564] case 1U: [L7568] case 2U: [L7574] ret = (ssize_t )count [L7576] return (ret); [L10796] RET ppp_write(ppp_device_fops_group2, (char const *)ldvarg14, ldvarg13, ldvarg12) [L10797] ldv_state_variable_3 = 1 [L10800] COND FALSE !(ldv_state_variable_3 == 2) [L10664] tmp___14 = __VERIFIER_nondet_int() [L10666] case 0: [L10754] case 1: [L10755] COND TRUE ldv_state_variable_0 != 0 [L10756] tmp___16 = __VERIFIER_nondet_int() [L10758] case 0: [L10759] COND TRUE ldv_state_variable_0 == 2 && ref_cnt == 0 [L10760] CALL ppp_cleanup() [L10405] int tmp ; [L10406] int tmp___0 ; [L10408] CALL, EXPR atomic_read((atomic_t const *)(& ppp_unit_count)) [L6035] EXPR v->counter [L6035] return ((int )*((int volatile *)(& v->counter))); [L10408] RET, EXPR atomic_read((atomic_t const *)(& ppp_unit_count)) [L10408] tmp = atomic_read((atomic_t const *)(& ppp_unit_count)) [L10409] COND TRUE tmp != 0 [L10418] CALL ldv_unregister_chrdev_19(108U, "ppp") [L11009] CALL unregister_chrdev(major, name) [L7009] FCALL __unregister_chrdev(major, 0U, 256U, name) [L11009] RET unregister_chrdev(major, name) [L11010] ldv_state_variable_3 = 0 [L10418] RET ldv_unregister_chrdev_19(108U, "ppp") [L10419] FCALL device_destroy(ppp_class, 113246208U) [L10420] FCALL class_destroy(ppp_class) [L10421] FCALL unregister_pernet_device(& ppp_net_ops) [L10760] RET ppp_cleanup() [L10761] ldv_state_variable_0 = 3 [L10896] CALL ldv_check_final_state() [L11521] int tmp___7 ; [L11523] CALL, EXPR ldv_set_is_empty(LDV_SKBS) [L11412] return (last_index == 0); [L11523] RET, EXPR ldv_set_is_empty(LDV_SKBS) [L11523] tmp___7 = ldv_set_is_empty(LDV_SKBS) [L11524] COND FALSE !(\read(tmp___7)) [L11526] CALL ldv_error() [L6954] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 121 procedures, 2156 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 165.8s, OverallIterations: 16, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 21.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 21149 SdHoareTripleChecker+Valid, 11.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20960 mSDsluCounter, 232741 SdHoareTripleChecker+Invalid, 10.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 179564 mSDsCounter, 448 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1212 IncrementalHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 448 mSolverCounterUnsat, 53177 mSDtfsCounter, 1212 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5198 GetRequests, 5105 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27284occurred in iteration=4, InterpolantAutomatonStates: 88, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 8.6s AutomataMinimizationTime, 15 MinimizatonAttempts, 3715 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 23.8s SatisfiabilityAnalysisTime, 53.0s InterpolantComputationTime, 2846 NumberOfCodeBlocks, 2846 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 5176 ConstructedInterpolants, 0 QuantifiedInterpolants, 6532 SizeOfPredicates, 37 NumberOfNonLiveVariables, 22300 ConjunctsInSsa, 233 ConjunctsInUnsatCore, 30 InterpolantComputations, 30 PerfectInterpolantSequences, 7628/7628 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-17 01:02:22,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN