./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.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 a900a56caf1252bf2b77371f0836914c913e44b231203ecd4eebd687a96fd0c2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 23:45:07,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 23:45:07,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 23:45:07,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 23:45:07,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 23:45:07,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 23:45:07,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 23:45:07,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 23:45:07,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 23:45:07,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 23:45:07,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 23:45:07,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 23:45:07,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 23:45:07,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 23:45:07,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 23:45:07,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 23:45:07,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 23:45:07,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 23:45:07,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 23:45:07,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 23:45:07,272 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 23:45:07,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 23:45:07,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 23:45:07,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 23:45:07,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 23:45:07,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 23:45:07,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 23:45:07,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 23:45:07,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 23:45:07,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 23:45:07,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 23:45:07,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 23:45:07,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 23:45:07,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 23:45:07,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 23:45:07,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 23:45:07,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 23:45:07,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 23:45:07,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 23:45:07,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 23:45:07,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 23:45:07,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 23:45:07,286 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 23:45:07,314 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 23:45:07,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 23:45:07,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 23:45:07,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 23:45:07,315 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 23:45:07,315 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 23:45:07,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 23:45:07,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 23:45:07,316 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 23:45:07,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 23:45:07,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 23:45:07,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 23:45:07,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 23:45:07,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 23:45:07,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 23:45:07,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 23:45:07,318 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 23:45:07,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 23:45:07,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 23:45:07,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 23:45:07,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 23:45:07,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:45:07,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 23:45:07,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 23:45:07,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 23:45:07,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 23:45:07,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 23:45:07,320 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 23:45:07,320 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 23:45:07,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 23:45:07,320 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a900a56caf1252bf2b77371f0836914c913e44b231203ecd4eebd687a96fd0c2 [2022-07-19 23:45:07,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 23:45:07,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 23:45:07,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 23:45:07,542 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 23:45:07,543 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 23:45:07,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2022-07-19 23:45:07,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66a9691cd/9b81ff202e0e4412944dfcf446ed5755/FLAGffc051129 [2022-07-19 23:45:08,241 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 23:45:08,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2022-07-19 23:45:08,285 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66a9691cd/9b81ff202e0e4412944dfcf446ed5755/FLAGffc051129 [2022-07-19 23:45:08,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66a9691cd/9b81ff202e0e4412944dfcf446ed5755 [2022-07-19 23:45:08,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 23:45:08,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 23:45:08,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 23:45:08,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 23:45:08,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 23:45:08,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:45:08" (1/1) ... [2022-07-19 23:45:08,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@228929bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:08, skipping insertion in model container [2022-07-19 23:45:08,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:45:08" (1/1) ... [2022-07-19 23:45:08,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 23:45:08,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:45:09,179 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5986] [2022-07-19 23:45:09,179 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5987-5988] [2022-07-19 23:45:09,544 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-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i[188410,188423] [2022-07-19 23:45:10,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:45:10,354 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 23:45:10,454 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5986] [2022-07-19 23:45:10,455 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5987-5988] [2022-07-19 23:45:10,467 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-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i[188410,188423] [2022-07-19 23:45:10,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:45:10,792 INFO L208 MainTranslator]: Completed translation [2022-07-19 23:45:10,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:10 WrapperNode [2022-07-19 23:45:10,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 23:45:10,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 23:45:10,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 23:45:10,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 23:45:10,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:10" (1/1) ... [2022-07-19 23:45:10,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:10" (1/1) ... [2022-07-19 23:45:11,023 INFO L137 Inliner]: procedures = 350, calls = 2000, calls flagged for inlining = 171, calls inlined = 139, statements flattened = 4723 [2022-07-19 23:45:11,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 23:45:11,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 23:45:11,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 23:45:11,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 23:45:11,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:10" (1/1) ... [2022-07-19 23:45:11,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:10" (1/1) ... [2022-07-19 23:45:11,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:10" (1/1) ... [2022-07-19 23:45:11,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:10" (1/1) ... [2022-07-19 23:45:11,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:10" (1/1) ... [2022-07-19 23:45:11,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:10" (1/1) ... [2022-07-19 23:45:11,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:10" (1/1) ... [2022-07-19 23:45:11,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 23:45:11,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 23:45:11,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 23:45:11,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 23:45:11,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:10" (1/1) ... [2022-07-19 23:45:11,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:45:11,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:45:11,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 23:45:11,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 23:45:11,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-19 23:45:11,380 INFO L130 BoogieDeclarations]: Found specification of procedure get_page [2022-07-19 23:45:11,380 INFO L138 BoogieDeclarations]: Found implementation of procedure get_page [2022-07-19 23:45:11,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-19 23:45:11,380 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_release_tx_bufs [2022-07-19 23:45:11,380 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_release_tx_bufs [2022-07-19 23:45:11,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-19 23:45:11,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-19 23:45:11,381 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-07-19 23:45:11,381 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-07-19 23:45:11,381 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2022-07-19 23:45:11,381 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2022-07-19 23:45:11,381 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_change_mtu [2022-07-19 23:45:11,381 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_change_mtu [2022-07-19 23:45:11,381 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-07-19 23:45:11,382 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-07-19 23:45:11,382 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_write [2022-07-19 23:45:11,382 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_write [2022-07-19 23:45:11,382 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-07-19 23:45:11,382 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-07-19 23:45:11,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-19 23:45:11,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-19 23:45:11,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-19 23:45:11,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-19 23:45:11,383 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-07-19 23:45:11,383 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-07-19 23:45:11,383 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_update_begin [2022-07-19 23:45:11,384 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_update_begin [2022-07-19 23:45:11,384 INFO L130 BoogieDeclarations]: Found specification of procedure bind_evtchn_to_irqhandler [2022-07-19 23:45:11,384 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_evtchn_to_irqhandler [2022-07-19 23:45:11,384 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2022-07-19 23:45:11,384 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2022-07-19 23:45:11,385 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_remove [2022-07-19 23:45:11,385 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_remove [2022-07-19 23:45:11,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-19 23:45:11,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-19 23:45:11,385 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-07-19 23:45:11,385 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-07-19 23:45:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-19 23:45:11,386 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-19 23:45:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_grant_ring [2022-07-19 23:45:11,386 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_grant_ring [2022-07-19 23:45:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-07-19 23:45:11,386 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-07-19 23:45:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-19 23:45:11,387 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-19 23:45:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_claim_grant_reference [2022-07-19 23:45:11,387 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_claim_grant_reference [2022-07-19 23:45:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 23:45:11,388 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 23:45:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure netif_set_real_num_tx_queues [2022-07-19 23:45:11,389 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_set_real_num_tx_queues [2022-07-19 23:45:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access [2022-07-19 23:45:11,390 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access [2022-07-19 23:45:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_disconnect_backend [2022-07-19 23:45:11,390 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_disconnect_backend [2022-07-19 23:45:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_stats64 [2022-07-19 23:45:11,390 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_stats64 [2022-07-19 23:45:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-19 23:45:11,391 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-19 23:45:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_alloc_evtchn [2022-07-19 23:45:11,391 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_alloc_evtchn [2022-07-19 23:45:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-07-19 23:45:11,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-07-19 23:45:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_alloc_grant_references [2022-07-19 23:45:11,391 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_alloc_grant_references [2022-07-19 23:45:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 23:45:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure netfront_tx_slot_available [2022-07-19 23:45:11,392 INFO L138 BoogieDeclarations]: Found implementation of procedure netfront_tx_slot_available [2022-07-19 23:45:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure notify_remote_via_irq [2022-07-19 23:45:11,392 INFO L138 BoogieDeclarations]: Found implementation of procedure notify_remote_via_irq [2022-07-19 23:45:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_release_grant_reference [2022-07-19 23:45:11,392 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_release_grant_reference [2022-07-19 23:45:11,393 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-07-19 23:45:11,393 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-07-19 23:45:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_can_sg [2022-07-19 23:45:11,394 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_can_sg [2022-07-19 23:45:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 23:45:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-07-19 23:45:11,394 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-07-19 23:45:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-07-19 23:45:11,394 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-07-19 23:45:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-07-19 23:45:11,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-07-19 23:45:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-07-19 23:45:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2022-07-19 23:45:11,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2022-07-19 23:45:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rxidx [2022-07-19 23:45:11,396 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rxidx [2022-07-19 23:45:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-19 23:45:11,396 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-19 23:45:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 23:45:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-07-19 23:45:11,397 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-07-19 23:45:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 23:45:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure write_queue_xenstore_keys [2022-07-19 23:45:11,398 INFO L138 BoogieDeclarations]: Found implementation of procedure write_queue_xenstore_keys [2022-07-19 23:45:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure pfn_to_mfn [2022-07-19 23:45:11,398 INFO L138 BoogieDeclarations]: Found implementation of procedure pfn_to_mfn [2022-07-19 23:45:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-07-19 23:45:11,399 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-07-19 23:45:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure add_id_to_freelist [2022-07-19 23:45:11,399 INFO L138 BoogieDeclarations]: Found implementation of procedure add_id_to_freelist [2022-07-19 23:45:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_alloc_rx_buffers [2022-07-19 23:45:11,399 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_alloc_rx_buffers [2022-07-19 23:45:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure skb_entry_set_link [2022-07-19 23:45:11,399 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_entry_set_link [2022-07-19 23:45:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-19 23:45:11,400 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-19 23:45:11,400 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-19 23:45:11,400 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-19 23:45:11,400 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-19 23:45:11,400 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-19 23:45:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2022-07-19 23:45:11,402 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2022-07-19 23:45:11,404 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access_ref [2022-07-19 23:45:11,404 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access_ref [2022-07-19 23:45:11,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-19 23:45:11,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-19 23:45:11,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-19 23:45:11,406 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-07-19 23:45:11,406 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-07-19 23:45:11,406 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_free_grant_references [2022-07-19 23:45:11,407 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_free_grant_references [2022-07-19 23:45:11,412 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2022-07-19 23:45:11,412 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2022-07-19 23:45:11,412 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-19 23:45:11,412 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-19 23:45:11,412 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-19 23:45:11,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-19 23:45:11,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-19 23:45:11,413 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2022-07-19 23:45:11,413 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2022-07-19 23:45:11,413 INFO L130 BoogieDeclarations]: Found specification of procedure get_zeroed_page [2022-07-19 23:45:11,413 INFO L138 BoogieDeclarations]: Found implementation of procedure get_zeroed_page [2022-07-19 23:45:11,413 INFO L130 BoogieDeclarations]: Found specification of procedure netback_changed [2022-07-19 23:45:11,413 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_changed [2022-07-19 23:45:11,413 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_poll_controller [2022-07-19 23:45:11,413 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_poll_controller [2022-07-19 23:45:11,414 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2022-07-19 23:45:11,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2022-07-19 23:45:11,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 23:45:11,414 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-19 23:45:11,414 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-19 23:45:11,414 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-07-19 23:45:11,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-07-19 23:45:11,414 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2022-07-19 23:45:11,414 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2022-07-19 23:45:11,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-19 23:45:11,415 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-19 23:45:11,415 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_select_queue [2022-07-19 23:45:11,415 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_select_queue [2022-07-19 23:45:11,415 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_end_access [2022-07-19 23:45:11,415 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_end_access [2022-07-19 23:45:11,415 INFO L130 BoogieDeclarations]: Found specification of procedure skb_get [2022-07-19 23:45:11,415 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_get [2022-07-19 23:45:11,416 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-19 23:45:11,416 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-19 23:45:11,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-19 23:45:11,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-19 23:45:11,416 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_ref [2022-07-19 23:45:11,416 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_ref [2022-07-19 23:45:11,416 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-19 23:45:11,416 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-19 23:45:11,416 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-07-19 23:45:11,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-07-19 23:45:11,417 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2022-07-19 23:45:11,417 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2022-07-19 23:45:11,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 23:45:11,417 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-07-19 23:45:11,417 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-07-19 23:45:11,417 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-07-19 23:45:11,417 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-07-19 23:45:11,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-19 23:45:11,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-19 23:45:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure get_id_from_freelist [2022-07-19 23:45:11,418 INFO L138 BoogieDeclarations]: Found implementation of procedure get_id_from_freelist [2022-07-19 23:45:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-07-19 23:45:11,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-07-19 23:45:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_fix_features [2022-07-19 23:45:11,418 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_fix_features [2022-07-19 23:45:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 23:45:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-07-19 23:45:11,419 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-07-19 23:45:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 23:45:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-07-19 23:45:11,419 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-07-19 23:45:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2022-07-19 23:45:11,419 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2022-07-19 23:45:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 23:45:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-07-19 23:45:11,420 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-07-19 23:45:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-07-19 23:45:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-07-19 23:45:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-07-19 23:45:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-07-19 23:45:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-07-19 23:45:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-07-19 23:45:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-07-19 23:45:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-07-19 23:45:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2022-07-19 23:45:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2022-07-19 23:45:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-07-19 23:45:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-07-19 23:45:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-07-19 23:45:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-07-19 23:45:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_grant_foreign_access_ref [2022-07-19 23:45:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_grant_foreign_access_ref [2022-07-19 23:45:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-19 23:45:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-19 23:45:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_set_features [2022-07-19 23:45:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_set_features [2022-07-19 23:45:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-07-19 23:45:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-07-19 23:45:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-19 23:45:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-19 23:45:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 23:45:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-07-19 23:45:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-07-19 23:45:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-07-19 23:45:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-07-19 23:45:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_free_evtchn [2022-07-19 23:45:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_free_evtchn [2022-07-19 23:45:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_skb [2022-07-19 23:45:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_skb [2022-07-19 23:45:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 23:45:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 23:45:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_buf_gc [2022-07-19 23:45:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_buf_gc [2022-07-19 23:45:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-07-19 23:45:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-07-19 23:45:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-19 23:45:11,489 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-19 23:45:12,183 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 23:45:12,200 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 23:45:12,938 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-19 23:45:17,614 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 23:45:17,625 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 23:45:17,639 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 23:45:17,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:45:17 BoogieIcfgContainer [2022-07-19 23:45:17,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 23:45:17,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 23:45:17,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 23:45:17,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 23:45:17,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:45:08" (1/3) ... [2022-07-19 23:45:17,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287effac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:45:17, skipping insertion in model container [2022-07-19 23:45:17,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:10" (2/3) ... [2022-07-19 23:45:17,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287effac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:45:17, skipping insertion in model container [2022-07-19 23:45:17,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:45:17" (3/3) ... [2022-07-19 23:45:17,648 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2022-07-19 23:45:17,658 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 23:45:17,658 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 23:45:17,709 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 23:45:17,713 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3cc624c9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5d2375a6 [2022-07-19 23:45:17,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 23:45:17,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 1624 states, 1148 states have (on average 1.318815331010453) internal successors, (1514), 1178 states have internal predecessors, (1514), 367 states have call successors, (367), 108 states have call predecessors, (367), 107 states have return successors, (362), 360 states have call predecessors, (362), 362 states have call successors, (362) [2022-07-19 23:45:17,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-19 23:45:17,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:45:17,742 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 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] [2022-07-19 23:45:17,743 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:45:17,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:45:17,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1904983006, now seen corresponding path program 1 times [2022-07-19 23:45:17,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:45:17,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206945829] [2022-07-19 23:45:17,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:45:17,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:45:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:45:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:45:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:45:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:45:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:45:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:45:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:45:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:45:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:45:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:45:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 23:45:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 23:45:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 23:45:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 23:45:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 23:45:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 23:45:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 23:45:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:45:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 23:45:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:45:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 23:45:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:45:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 23:45:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 23:45:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-07-19 23:45:18,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:45:18,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206945829] [2022-07-19 23:45:18,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206945829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:45:18,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:45:18,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:45:18,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985068136] [2022-07-19 23:45:18,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:45:18,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:45:18,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:45:18,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:45:18,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:45:18,618 INFO L87 Difference]: Start difference. First operand has 1624 states, 1148 states have (on average 1.318815331010453) internal successors, (1514), 1178 states have internal predecessors, (1514), 367 states have call successors, (367), 108 states have call predecessors, (367), 107 states have return successors, (362), 360 states have call predecessors, (362), 362 states have call successors, (362) Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-19 23:45:25,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:45:28,741 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:45:31,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:45:32,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:45:32,592 INFO L93 Difference]: Finished difference Result 4651 states and 6525 transitions. [2022-07-19 23:45:32,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 23:45:32,595 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 162 [2022-07-19 23:45:32,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:45:32,622 INFO L225 Difference]: With dead ends: 4651 [2022-07-19 23:45:32,622 INFO L226 Difference]: Without dead ends: 2984 [2022-07-19 23:45:32,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:45:32,640 INFO L413 NwaCegarLoop]: 2196 mSDtfsCounter, 4049 mSDsluCounter, 3210 mSDsCounter, 0 mSdLazyCounter, 4046 mSolverCounterSat, 2808 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4274 SdHoareTripleChecker+Valid, 5406 SdHoareTripleChecker+Invalid, 6857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2808 IncrementalHoareTripleChecker+Valid, 4046 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:45:32,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4274 Valid, 5406 Invalid, 6857 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2808 Valid, 4046 Invalid, 3 Unknown, 0 Unchecked, 13.3s Time] [2022-07-19 23:45:32,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2022-07-19 23:45:32,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 2610. [2022-07-19 23:45:32,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2610 states, 1844 states have (on average 1.2787418655097613) internal successors, (2358), 1887 states have internal predecessors, (2358), 572 states have call successors, (572), 193 states have call predecessors, (572), 193 states have return successors, (576), 562 states have call predecessors, (576), 571 states have call successors, (576) [2022-07-19 23:45:32,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2610 states to 2610 states and 3506 transitions. [2022-07-19 23:45:32,857 INFO L78 Accepts]: Start accepts. Automaton has 2610 states and 3506 transitions. Word has length 162 [2022-07-19 23:45:32,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:45:32,858 INFO L495 AbstractCegarLoop]: Abstraction has 2610 states and 3506 transitions. [2022-07-19 23:45:32,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-19 23:45:32,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2610 states and 3506 transitions. [2022-07-19 23:45:32,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-19 23:45:32,871 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:45:32,871 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 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] [2022-07-19 23:45:32,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 23:45:32,872 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:45:32,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:45:32,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1691301829, now seen corresponding path program 1 times [2022-07-19 23:45:32,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:45:32,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512271620] [2022-07-19 23:45:32,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:45:32,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:45:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:33,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:45:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:33,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:45:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:33,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:45:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:33,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:45:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:33,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:45:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:33,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:45:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:33,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:45:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:33,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:45:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:33,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:45:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:33,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:45:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:33,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 23:45:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:33,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 23:45:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:33,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:45:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:33,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 23:45:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:33,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-19 23:45:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:33,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 23:45:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:33,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 23:45:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:33,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:45:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:33,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 23:45:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:33,388 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-19 23:45:33,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:45:33,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512271620] [2022-07-19 23:45:33,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512271620] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:45:33,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:45:33,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:45:33,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218298535] [2022-07-19 23:45:33,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:45:33,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:45:33,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:45:33,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:45:33,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:45:33,394 INFO L87 Difference]: Start difference. First operand 2610 states and 3506 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (22), 5 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 23:45:39,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:45:41,127 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:45:43,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:45:43,322 INFO L93 Difference]: Finished difference Result 6894 states and 9387 transitions. [2022-07-19 23:45:43,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:45:43,323 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (22), 5 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 154 [2022-07-19 23:45:43,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:45:43,346 INFO L225 Difference]: With dead ends: 6894 [2022-07-19 23:45:43,346 INFO L226 Difference]: Without dead ends: 4311 [2022-07-19 23:45:43,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-19 23:45:43,361 INFO L413 NwaCegarLoop]: 3026 mSDtfsCounter, 2925 mSDsluCounter, 3828 mSDsCounter, 0 mSdLazyCounter, 3269 mSolverCounterSat, 1970 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3166 SdHoareTripleChecker+Valid, 6854 SdHoareTripleChecker+Invalid, 5241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1970 IncrementalHoareTripleChecker+Valid, 3269 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-07-19 23:45:43,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3166 Valid, 6854 Invalid, 5241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1970 Valid, 3269 Invalid, 2 Unknown, 0 Unchecked, 9.5s Time] [2022-07-19 23:45:43,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2022-07-19 23:45:43,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 3821. [2022-07-19 23:45:43,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3821 states, 2724 states have (on average 1.2826725403817916) internal successors, (3494), 2785 states have internal predecessors, (3494), 818 states have call successors, (818), 273 states have call predecessors, (818), 278 states have return successors, (845), 809 states have call predecessors, (845), 817 states have call successors, (845) [2022-07-19 23:45:43,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3821 states to 3821 states and 5157 transitions. [2022-07-19 23:45:43,558 INFO L78 Accepts]: Start accepts. Automaton has 3821 states and 5157 transitions. Word has length 154 [2022-07-19 23:45:43,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:45:43,558 INFO L495 AbstractCegarLoop]: Abstraction has 3821 states and 5157 transitions. [2022-07-19 23:45:43,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (22), 5 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 23:45:43,559 INFO L276 IsEmpty]: Start isEmpty. Operand 3821 states and 5157 transitions. [2022-07-19 23:45:43,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-19 23:45:43,563 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:45:43,563 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:45:43,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 23:45:43,564 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:45:43,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:45:43,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1780284180, now seen corresponding path program 1 times [2022-07-19 23:45:43,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:45:43,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357770597] [2022-07-19 23:45:43,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:45:43,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:45:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:45:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:45:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:45:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:45:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:45:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:45:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:45:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:45:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:45:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:45:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 23:45:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 23:45:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:45:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 23:45:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 23:45:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 23:45:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 23:45:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-19 23:45:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 23:45:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:45:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-19 23:45:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:43,914 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-07-19 23:45:43,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:45:43,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357770597] [2022-07-19 23:45:43,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357770597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:45:43,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:45:43,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 23:45:43,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385324905] [2022-07-19 23:45:43,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:45:43,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 23:45:43,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:45:43,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 23:45:43,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:45:43,916 INFO L87 Difference]: Start difference. First operand 3821 states and 5157 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 23:45:50,057 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:45:52,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:45:53,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:45:53,879 INFO L93 Difference]: Finished difference Result 8085 states and 11016 transitions. [2022-07-19 23:45:53,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:45:53,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 181 [2022-07-19 23:45:53,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:45:53,903 INFO L225 Difference]: With dead ends: 8085 [2022-07-19 23:45:53,904 INFO L226 Difference]: Without dead ends: 4308 [2022-07-19 23:45:53,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:45:53,922 INFO L413 NwaCegarLoop]: 2034 mSDtfsCounter, 1040 mSDsluCounter, 5197 mSDsCounter, 0 mSdLazyCounter, 3840 mSolverCounterSat, 950 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 7231 SdHoareTripleChecker+Invalid, 4792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 950 IncrementalHoareTripleChecker+Valid, 3840 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:45:53,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 7231 Invalid, 4792 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [950 Valid, 3840 Invalid, 2 Unknown, 0 Unchecked, 9.6s Time] [2022-07-19 23:45:53,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4308 states. [2022-07-19 23:45:54,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4308 to 3821. [2022-07-19 23:45:54,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3821 states, 2724 states have (on average 1.2797356828193833) internal successors, (3486), 2785 states have internal predecessors, (3486), 818 states have call successors, (818), 273 states have call predecessors, (818), 278 states have return successors, (845), 809 states have call predecessors, (845), 817 states have call successors, (845) [2022-07-19 23:45:54,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3821 states to 3821 states and 5149 transitions. [2022-07-19 23:45:54,100 INFO L78 Accepts]: Start accepts. Automaton has 3821 states and 5149 transitions. Word has length 181 [2022-07-19 23:45:54,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:45:54,102 INFO L495 AbstractCegarLoop]: Abstraction has 3821 states and 5149 transitions. [2022-07-19 23:45:54,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 23:45:54,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3821 states and 5149 transitions. [2022-07-19 23:45:54,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-19 23:45:54,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:45:54,106 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:45:54,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 23:45:54,107 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:45:54,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:45:54,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1252714224, now seen corresponding path program 1 times [2022-07-19 23:45:54,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:45:54,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71401412] [2022-07-19 23:45:54,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:45:54,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:45:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:45:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:45:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:45:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:45:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:45:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:45:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:45:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:45:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:45:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:45:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 23:45:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 23:45:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 23:45:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 23:45:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 23:45:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 23:45:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-19 23:45:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-19 23:45:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 23:45:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:45:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 23:45:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:45:54,554 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-07-19 23:45:54,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:45:54,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71401412] [2022-07-19 23:45:54,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71401412] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:45:54,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:45:54,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:45:54,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697173288] [2022-07-19 23:45:54,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:45:54,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:45:54,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:45:54,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:45:54,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:45:54,557 INFO L87 Difference]: Start difference. First operand 3821 states and 5149 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 23:46:00,524 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:46:02,604 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:46:06,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:46:06,084 INFO L93 Difference]: Finished difference Result 7413 states and 10171 transitions. [2022-07-19 23:46:06,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:46:06,084 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 187 [2022-07-19 23:46:06,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:46:06,167 INFO L225 Difference]: With dead ends: 7413 [2022-07-19 23:46:06,168 INFO L226 Difference]: Without dead ends: 7410 [2022-07-19 23:46:06,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-19 23:46:06,173 INFO L413 NwaCegarLoop]: 2360 mSDtfsCounter, 3176 mSDsluCounter, 4031 mSDsCounter, 0 mSdLazyCounter, 3695 mSolverCounterSat, 1897 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3413 SdHoareTripleChecker+Valid, 6391 SdHoareTripleChecker+Invalid, 5594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1897 IncrementalHoareTripleChecker+Valid, 3695 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:46:06,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3413 Valid, 6391 Invalid, 5594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1897 Valid, 3695 Invalid, 2 Unknown, 0 Unchecked, 11.1s Time] [2022-07-19 23:46:06,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7410 states. [2022-07-19 23:46:06,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7410 to 6597. [2022-07-19 23:46:06,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6597 states, 4764 states have (on average 1.290722082283795) internal successors, (6149), 4876 states have internal predecessors, (6149), 1340 states have call successors, (1340), 480 states have call predecessors, (1340), 492 states have return successors, (1426), 1318 states have call predecessors, (1426), 1339 states have call successors, (1426) [2022-07-19 23:46:06,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6597 states to 6597 states and 8915 transitions. [2022-07-19 23:46:06,381 INFO L78 Accepts]: Start accepts. Automaton has 6597 states and 8915 transitions. Word has length 187 [2022-07-19 23:46:06,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:46:06,383 INFO L495 AbstractCegarLoop]: Abstraction has 6597 states and 8915 transitions. [2022-07-19 23:46:06,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 23:46:06,384 INFO L276 IsEmpty]: Start isEmpty. Operand 6597 states and 8915 transitions. [2022-07-19 23:46:06,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-19 23:46:06,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:46:06,392 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:46:06,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 23:46:06,392 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:46:06,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:46:06,393 INFO L85 PathProgramCache]: Analyzing trace with hash -898207309, now seen corresponding path program 1 times [2022-07-19 23:46:06,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:46:06,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069440673] [2022-07-19 23:46:06,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:46:06,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:46:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:46:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:46:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:46:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:46:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:46:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:46:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:46:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:46:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:46:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:46:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 23:46:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 23:46:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 23:46:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 23:46:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 23:46:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 23:46:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 23:46:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:46:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 23:46:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-19 23:46:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 23:46:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-19 23:46:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-19 23:46:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-19 23:46:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-19 23:46:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-19 23:46:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:46:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-19 23:46:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:46:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-07-19 23:46:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:46:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-07-19 23:46:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-19 23:46:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:06,886 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-07-19 23:46:06,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:46:06,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069440673] [2022-07-19 23:46:06,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069440673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:46:06,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:46:06,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 23:46:06,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913019861] [2022-07-19 23:46:06,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:46:06,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 23:46:06,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:46:06,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 23:46:06,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:46:06,889 INFO L87 Difference]: Start difference. First operand 6597 states and 8915 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-19 23:46:14,074 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:46:16,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:46:18,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:46:18,944 INFO L93 Difference]: Finished difference Result 17301 states and 23642 transitions. [2022-07-19 23:46:18,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 23:46:18,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 254 [2022-07-19 23:46:18,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:46:19,003 INFO L225 Difference]: With dead ends: 17301 [2022-07-19 23:46:19,003 INFO L226 Difference]: Without dead ends: 10756 [2022-07-19 23:46:19,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-07-19 23:46:19,031 INFO L413 NwaCegarLoop]: 2896 mSDtfsCounter, 4093 mSDsluCounter, 4102 mSDsCounter, 0 mSdLazyCounter, 4720 mSolverCounterSat, 3280 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4295 SdHoareTripleChecker+Valid, 6998 SdHoareTripleChecker+Invalid, 8002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3280 IncrementalHoareTripleChecker+Valid, 4720 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:46:19,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4295 Valid, 6998 Invalid, 8002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3280 Valid, 4720 Invalid, 2 Unknown, 0 Unchecked, 11.4s Time] [2022-07-19 23:46:19,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10756 states. [2022-07-19 23:46:19,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10756 to 9459. [2022-07-19 23:46:19,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9459 states, 6932 states have (on average 1.2902481246393538) internal successors, (8944), 7089 states have internal predecessors, (8944), 1810 states have call successors, (1810), 694 states have call predecessors, (1810), 716 states have return successors, (1942), 1779 states have call predecessors, (1942), 1809 states have call successors, (1942) [2022-07-19 23:46:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9459 states to 9459 states and 12696 transitions. [2022-07-19 23:46:19,420 INFO L78 Accepts]: Start accepts. Automaton has 9459 states and 12696 transitions. Word has length 254 [2022-07-19 23:46:19,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:46:19,421 INFO L495 AbstractCegarLoop]: Abstraction has 9459 states and 12696 transitions. [2022-07-19 23:46:19,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-19 23:46:19,422 INFO L276 IsEmpty]: Start isEmpty. Operand 9459 states and 12696 transitions. [2022-07-19 23:46:19,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-07-19 23:46:19,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:46:19,440 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:46:19,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 23:46:19,441 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:46:19,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:46:19,441 INFO L85 PathProgramCache]: Analyzing trace with hash 2121719809, now seen corresponding path program 1 times [2022-07-19 23:46:19,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:46:19,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768807924] [2022-07-19 23:46:19,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:46:19,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:46:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:46:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:46:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:46:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:46:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:46:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:46:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:46:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:46:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:46:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:46:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 23:46:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 23:46:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 23:46:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 23:46:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 23:46:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 23:46:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 23:46:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:46:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 23:46:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-19 23:46:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 23:46:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-19 23:46:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-19 23:46:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-19 23:46:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-19 23:46:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-19 23:46:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:46:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-07-19 23:46:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:46:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-19 23:46:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:46:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-19 23:46:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-07-19 23:46:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:19,953 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-07-19 23:46:19,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:46:19,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768807924] [2022-07-19 23:46:19,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768807924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:46:19,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:46:19,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 23:46:19,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249448480] [2022-07-19 23:46:19,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:46:19,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 23:46:19,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:46:19,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 23:46:19,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:46:19,957 INFO L87 Difference]: Start difference. First operand 9459 states and 12696 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-19 23:46:25,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:46:29,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:46:31,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:46:33,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:46:34,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:46:34,989 INFO L93 Difference]: Finished difference Result 20146 states and 27326 transitions. [2022-07-19 23:46:34,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:46:34,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 273 [2022-07-19 23:46:34,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:46:35,049 INFO L225 Difference]: With dead ends: 20146 [2022-07-19 23:46:35,050 INFO L226 Difference]: Without dead ends: 10739 [2022-07-19 23:46:35,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-07-19 23:46:35,084 INFO L413 NwaCegarLoop]: 1909 mSDtfsCounter, 1974 mSDsluCounter, 3977 mSDsCounter, 0 mSdLazyCounter, 3845 mSolverCounterSat, 1624 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 5886 SdHoareTripleChecker+Invalid, 5473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1624 IncrementalHoareTripleChecker+Valid, 3845 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2022-07-19 23:46:35,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2105 Valid, 5886 Invalid, 5473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1624 Valid, 3845 Invalid, 4 Unknown, 0 Unchecked, 14.5s Time] [2022-07-19 23:46:35,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10739 states. [2022-07-19 23:46:35,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10739 to 9617. [2022-07-19 23:46:35,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9617 states, 7043 states have (on average 1.2897912821240949) internal successors, (9084), 7208 states have internal predecessors, (9084), 1850 states have call successors, (1850), 694 states have call predecessors, (1850), 723 states have return successors, (2030), 1822 states have call predecessors, (2030), 1849 states have call successors, (2030) [2022-07-19 23:46:35,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9617 states to 9617 states and 12964 transitions. [2022-07-19 23:46:35,520 INFO L78 Accepts]: Start accepts. Automaton has 9617 states and 12964 transitions. Word has length 273 [2022-07-19 23:46:35,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:46:35,521 INFO L495 AbstractCegarLoop]: Abstraction has 9617 states and 12964 transitions. [2022-07-19 23:46:35,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-19 23:46:35,521 INFO L276 IsEmpty]: Start isEmpty. Operand 9617 states and 12964 transitions. [2022-07-19 23:46:35,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-07-19 23:46:35,537 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:46:35,537 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:46:35,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 23:46:35,538 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:46:35,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:46:35,538 INFO L85 PathProgramCache]: Analyzing trace with hash -782873689, now seen corresponding path program 1 times [2022-07-19 23:46:35,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:46:35,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464274304] [2022-07-19 23:46:35,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:46:35,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:46:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:46:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:46:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:46:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:46:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:46:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:46:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:46:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:46:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:46:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:46:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 23:46:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 23:46:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 23:46:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 23:46:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 23:46:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 23:46:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 23:46:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:46:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 23:46:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-19 23:46:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 23:46:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-19 23:46:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-19 23:46:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-19 23:46:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:35,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-19 23:46:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:36,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-19 23:46:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:36,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:46:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:36,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-07-19 23:46:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:36,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:46:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:36,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-19 23:46:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:36,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:46:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:36,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-19 23:46:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:36,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-19 23:46:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:36,068 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-07-19 23:46:36,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:46:36,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464274304] [2022-07-19 23:46:36,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464274304] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:46:36,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208993171] [2022-07-19 23:46:36,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:46:36,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:46:36,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:46:36,072 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:46:36,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 23:46:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:36,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 2993 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 23:46:36,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:46:36,916 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-19 23:46:36,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:46:36,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208993171] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:46:36,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:46:36,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-19 23:46:36,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383306000] [2022-07-19 23:46:36,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:46:36,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:46:36,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:46:36,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:46:36,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 23:46:36,928 INFO L87 Difference]: Start difference. First operand 9617 states and 12964 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-19 23:46:37,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:46:37,221 INFO L93 Difference]: Finished difference Result 19212 states and 25964 transitions. [2022-07-19 23:46:37,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 23:46:37,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 277 [2022-07-19 23:46:37,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:46:37,248 INFO L225 Difference]: With dead ends: 19212 [2022-07-19 23:46:37,249 INFO L226 Difference]: Without dead ends: 9624 [2022-07-19 23:46:37,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 23:46:37,271 INFO L413 NwaCegarLoop]: 2166 mSDtfsCounter, 2 mSDsluCounter, 4326 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6492 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:46:37,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6492 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 23:46:37,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9624 states. [2022-07-19 23:46:37,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9624 to 9624. [2022-07-19 23:46:37,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9624 states, 7050 states have (on average 1.2895035460992907) internal successors, (9091), 7215 states have internal predecessors, (9091), 1850 states have call successors, (1850), 694 states have call predecessors, (1850), 723 states have return successors, (2030), 1822 states have call predecessors, (2030), 1849 states have call successors, (2030) [2022-07-19 23:46:37,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9624 states to 9624 states and 12971 transitions. [2022-07-19 23:46:37,516 INFO L78 Accepts]: Start accepts. Automaton has 9624 states and 12971 transitions. Word has length 277 [2022-07-19 23:46:37,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:46:37,517 INFO L495 AbstractCegarLoop]: Abstraction has 9624 states and 12971 transitions. [2022-07-19 23:46:37,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-19 23:46:37,517 INFO L276 IsEmpty]: Start isEmpty. Operand 9624 states and 12971 transitions. [2022-07-19 23:46:37,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-07-19 23:46:37,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:46:37,529 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:46:37,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 23:46:37,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:46:37,753 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:46:37,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:46:37,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1420546353, now seen corresponding path program 1 times [2022-07-19 23:46:37,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:46:37,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224053979] [2022-07-19 23:46:37,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:46:37,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:46:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:37,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:46:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:37,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:46:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:37,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:46:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:37,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:46:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:37,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:46:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:46:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:46:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:46:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:46:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:46:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 23:46:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 23:46:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 23:46:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 23:46:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 23:46:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 23:46:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-19 23:46:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:46:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-19 23:46:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 23:46:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-19 23:46:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-19 23:46:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-19 23:46:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-19 23:46:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-19 23:46:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-19 23:46:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:46:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-19 23:46:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:46:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-07-19 23:46:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:46:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-07-19 23:46:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-19 23:46:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:38,201 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2022-07-19 23:46:38,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:46:38,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224053979] [2022-07-19 23:46:38,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224053979] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:46:38,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256950073] [2022-07-19 23:46:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:46:38,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:46:38,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:46:38,216 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:46:38,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 23:46:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:46:39,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 3038 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 23:46:39,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:46:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 122 proven. 1 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-07-19 23:46:39,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:46:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-07-19 23:46:39,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256950073] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:46:39,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 23:46:39,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2022-07-19 23:46:39,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339348252] [2022-07-19 23:46:39,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 23:46:39,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 23:46:39,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:46:39,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 23:46:39,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-19 23:46:39,554 INFO L87 Difference]: Start difference. First operand 9624 states and 12971 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 10 states have internal predecessors, (246), 2 states have call successors, (79), 6 states have call predecessors, (79), 4 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-07-19 23:46:48,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:46:50,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:46:52,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:46:55,318 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:46:57,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:47:00,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:47:02,246 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:47:04,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:47:06,483 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:47:08,617 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:47:10,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:47:12,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:47:12,375 INFO L93 Difference]: Finished difference Result 20345 states and 27698 transitions. [2022-07-19 23:47:12,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 23:47:12,376 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 10 states have internal predecessors, (246), 2 states have call successors, (79), 6 states have call predecessors, (79), 4 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 280 [2022-07-19 23:47:12,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:47:12,420 INFO L225 Difference]: With dead ends: 20345 [2022-07-19 23:47:12,420 INFO L226 Difference]: Without dead ends: 10750 [2022-07-19 23:47:12,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2022-07-19 23:47:12,450 INFO L413 NwaCegarLoop]: 1904 mSDtfsCounter, 2004 mSDsluCounter, 7296 mSDsCounter, 0 mSdLazyCounter, 7271 mSolverCounterSat, 1659 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2135 SdHoareTripleChecker+Valid, 9200 SdHoareTripleChecker+Invalid, 8941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1659 IncrementalHoareTripleChecker+Valid, 7271 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:47:12,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2135 Valid, 9200 Invalid, 8941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1659 Valid, 7271 Invalid, 11 Unknown, 0 Unchecked, 32.0s Time] [2022-07-19 23:47:12,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10750 states. [2022-07-19 23:47:12,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10750 to 9647. [2022-07-19 23:47:12,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9647 states, 7072 states have (on average 1.2893099547511313) internal successors, (9118), 7237 states have internal predecessors, (9118), 1850 states have call successors, (1850), 695 states have call predecessors, (1850), 724 states have return successors, (2030), 1822 states have call predecessors, (2030), 1849 states have call successors, (2030) [2022-07-19 23:47:12,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9647 states to 9647 states and 12998 transitions. [2022-07-19 23:47:12,740 INFO L78 Accepts]: Start accepts. Automaton has 9647 states and 12998 transitions. Word has length 280 [2022-07-19 23:47:12,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:47:12,740 INFO L495 AbstractCegarLoop]: Abstraction has 9647 states and 12998 transitions. [2022-07-19 23:47:12,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 10 states have internal predecessors, (246), 2 states have call successors, (79), 6 states have call predecessors, (79), 4 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-07-19 23:47:12,741 INFO L276 IsEmpty]: Start isEmpty. Operand 9647 states and 12998 transitions. [2022-07-19 23:47:12,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-07-19 23:47:12,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:47:12,753 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:47:12,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 23:47:12,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-19 23:47:12,968 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:47:12,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:47:12,968 INFO L85 PathProgramCache]: Analyzing trace with hash 295763262, now seen corresponding path program 1 times [2022-07-19 23:47:12,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:47:12,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146595049] [2022-07-19 23:47:12,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:47:12,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:47:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:47:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:47:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:47:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:47:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:47:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:47:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:47:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:47:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:47:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:47:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 23:47:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 23:47:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 23:47:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 23:47:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 23:47:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-19 23:47:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 23:47:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:47:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 23:47:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-19 23:47:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-19 23:47:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-19 23:47:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-19 23:47:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-19 23:47:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-19 23:47:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-07-19 23:47:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:47:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-19 23:47:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:47:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-19 23:47:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:47:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-07-19 23:47:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-07-19 23:47:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2022-07-19 23:47:13,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:47:13,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146595049] [2022-07-19 23:47:13,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146595049] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:47:13,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323501992] [2022-07-19 23:47:13,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:47:13,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:47:13,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:47:13,944 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:47:13,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 23:47:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:14,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 3142 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 23:47:14,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:47:14,807 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2022-07-19 23:47:14,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:47:14,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323501992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:47:14,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:47:14,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-07-19 23:47:14,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372282958] [2022-07-19 23:47:14,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:47:14,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:47:14,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:47:14,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:47:14,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2022-07-19 23:47:14,810 INFO L87 Difference]: Start difference. First operand 9647 states and 12998 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-19 23:47:15,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:47:15,140 INFO L93 Difference]: Finished difference Result 20410 states and 27749 transitions. [2022-07-19 23:47:15,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 23:47:15,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 288 [2022-07-19 23:47:15,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:47:15,172 INFO L225 Difference]: With dead ends: 20410 [2022-07-19 23:47:15,172 INFO L226 Difference]: Without dead ends: 10825 [2022-07-19 23:47:15,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2022-07-19 23:47:15,198 INFO L413 NwaCegarLoop]: 2590 mSDtfsCounter, 793 mSDsluCounter, 7118 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 9708 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:47:15,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 9708 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 23:47:15,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10825 states. [2022-07-19 23:47:15,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10825 to 9651. [2022-07-19 23:47:15,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9651 states, 7076 states have (on average 1.2891464104013568) internal successors, (9122), 7241 states have internal predecessors, (9122), 1850 states have call successors, (1850), 695 states have call predecessors, (1850), 724 states have return successors, (2030), 1822 states have call predecessors, (2030), 1849 states have call successors, (2030) [2022-07-19 23:47:15,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9651 states to 9651 states and 13002 transitions. [2022-07-19 23:47:15,528 INFO L78 Accepts]: Start accepts. Automaton has 9651 states and 13002 transitions. Word has length 288 [2022-07-19 23:47:15,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:47:15,528 INFO L495 AbstractCegarLoop]: Abstraction has 9651 states and 13002 transitions. [2022-07-19 23:47:15,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-19 23:47:15,529 INFO L276 IsEmpty]: Start isEmpty. Operand 9651 states and 13002 transitions. [2022-07-19 23:47:15,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-07-19 23:47:15,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:47:15,540 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:47:15,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-19 23:47:15,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:47:15,756 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:47:15,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:47:15,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1877006029, now seen corresponding path program 2 times [2022-07-19 23:47:15,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:47:15,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441198998] [2022-07-19 23:47:15,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:47:15,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:47:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:15,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:47:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:15,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:47:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:15,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:47:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:15,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:47:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:15,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:47:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:15,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:47:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:15,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:47:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:15,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:47:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:15,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:47:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:15,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:47:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:15,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 23:47:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:15,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 23:47:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:15,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 23:47:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:15,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 23:47:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:16,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 23:47:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:16,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-19 23:47:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:16,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 23:47:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:16,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:47:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:16,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 23:47:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:16,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-19 23:47:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:16,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-19 23:47:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:16,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-19 23:47:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:16,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-19 23:47:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:16,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-19 23:47:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:16,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-07-19 23:47:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:16,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-19 23:47:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:16,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:47:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:16,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-19 23:47:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:16,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:47:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:16,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-07-19 23:47:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:16,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:47:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:16,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-07-19 23:47:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:16,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-19 23:47:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2022-07-19 23:47:16,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:47:16,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441198998] [2022-07-19 23:47:16,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441198998] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:47:16,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536348271] [2022-07-19 23:47:16,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 23:47:16,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:47:16,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:47:16,089 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) [2022-07-19 23:47:16,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 23:47:17,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 23:47:17,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 23:47:17,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 3170 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-19 23:47:17,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:47:17,289 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 127 proven. 50 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2022-07-19 23:47:17,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:47:17,510 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2022-07-19 23:47:17,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536348271] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:47:17,510 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 23:47:17,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 6] total 19 [2022-07-19 23:47:17,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555529149] [2022-07-19 23:47:17,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 23:47:17,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-19 23:47:17,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:47:17,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-19 23:47:17,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-07-19 23:47:17,512 INFO L87 Difference]: Start difference. First operand 9651 states and 13002 transitions. Second operand has 19 states, 19 states have (on average 13.105263157894736) internal successors, (249), 15 states have internal predecessors, (249), 2 states have call successors, (77), 6 states have call predecessors, (77), 4 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-07-19 23:47:28,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:47:30,470 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:47:34,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:47:34,577 INFO L93 Difference]: Finished difference Result 20402 states and 27751 transitions. [2022-07-19 23:47:34,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 23:47:34,578 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.105263157894736) internal successors, (249), 15 states have internal predecessors, (249), 2 states have call successors, (77), 6 states have call predecessors, (77), 4 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 291 [2022-07-19 23:47:34,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:47:34,606 INFO L225 Difference]: With dead ends: 20402 [2022-07-19 23:47:34,606 INFO L226 Difference]: Without dead ends: 10793 [2022-07-19 23:47:34,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 638 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=224, Invalid=1036, Unknown=0, NotChecked=0, Total=1260 [2022-07-19 23:47:34,627 INFO L413 NwaCegarLoop]: 1916 mSDtfsCounter, 2407 mSDsluCounter, 12147 mSDsCounter, 0 mSdLazyCounter, 12583 mSolverCounterSat, 2141 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2541 SdHoareTripleChecker+Valid, 14063 SdHoareTripleChecker+Invalid, 14726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2141 IncrementalHoareTripleChecker+Valid, 12583 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:47:34,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2541 Valid, 14063 Invalid, 14726 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2141 Valid, 12583 Invalid, 2 Unknown, 0 Unchecked, 16.3s Time] [2022-07-19 23:47:34,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10793 states. [2022-07-19 23:47:34,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10793 to 9671. [2022-07-19 23:47:34,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9671 states, 7096 states have (on average 1.2881905298759864) internal successors, (9141), 7261 states have internal predecessors, (9141), 1850 states have call successors, (1850), 695 states have call predecessors, (1850), 724 states have return successors, (2030), 1822 states have call predecessors, (2030), 1849 states have call successors, (2030) [2022-07-19 23:47:34,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9671 states to 9671 states and 13021 transitions. [2022-07-19 23:47:34,871 INFO L78 Accepts]: Start accepts. Automaton has 9671 states and 13021 transitions. Word has length 291 [2022-07-19 23:47:34,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:47:34,873 INFO L495 AbstractCegarLoop]: Abstraction has 9671 states and 13021 transitions. [2022-07-19 23:47:34,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.105263157894736) internal successors, (249), 15 states have internal predecessors, (249), 2 states have call successors, (77), 6 states have call predecessors, (77), 4 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-07-19 23:47:34,873 INFO L276 IsEmpty]: Start isEmpty. Operand 9671 states and 13021 transitions. [2022-07-19 23:47:34,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-07-19 23:47:34,883 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:47:34,884 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:47:34,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-19 23:47:35,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:47:35,109 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:47:35,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:47:35,109 INFO L85 PathProgramCache]: Analyzing trace with hash 2131457523, now seen corresponding path program 3 times [2022-07-19 23:47:35,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:47:35,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939865732] [2022-07-19 23:47:35,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:47:35,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:47:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:47:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:47:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:47:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:47:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:47:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:47:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:47:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:47:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:47:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:47:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 23:47:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 23:47:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 23:47:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 23:47:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-19 23:47:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 23:47:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-19 23:47:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:47:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-19 23:47:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-19 23:47:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-19 23:47:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-19 23:47:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-07-19 23:47:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-07-19 23:47:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-19 23:47:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-19 23:47:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:47:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-19 23:47:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:47:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-19 23:47:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:47:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-19 23:47:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-07-19 23:47:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:35,657 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-07-19 23:47:35,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:47:35,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939865732] [2022-07-19 23:47:35,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939865732] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:47:35,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314607756] [2022-07-19 23:47:35,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 23:47:35,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:47:35,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:47:35,659 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:47:35,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 23:47:36,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-19 23:47:36,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 23:47:36,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 2350 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-19 23:47:36,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:47:37,100 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-07-19 23:47:37,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:47:37,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314607756] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:47:37,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:47:37,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [16] total 20 [2022-07-19 23:47:37,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168391718] [2022-07-19 23:47:37,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:47:37,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 23:47:37,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:47:37,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 23:47:37,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2022-07-19 23:47:37,105 INFO L87 Difference]: Start difference. First operand 9671 states and 13021 transitions. Second operand has 12 states, 10 states have (on average 15.0) internal successors, (150), 9 states have internal predecessors, (150), 4 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (32), 5 states have call predecessors, (32), 4 states have call successors, (32) [2022-07-19 23:47:38,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:47:38,638 INFO L93 Difference]: Finished difference Result 21636 states and 29642 transitions. [2022-07-19 23:47:38,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 23:47:38,639 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 15.0) internal successors, (150), 9 states have internal predecessors, (150), 4 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (32), 5 states have call predecessors, (32), 4 states have call successors, (32) Word has length 297 [2022-07-19 23:47:38,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:47:38,687 INFO L225 Difference]: With dead ends: 21636 [2022-07-19 23:47:38,688 INFO L226 Difference]: Without dead ends: 12029 [2022-07-19 23:47:38,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 351 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-07-19 23:47:38,718 INFO L413 NwaCegarLoop]: 2849 mSDtfsCounter, 1475 mSDsluCounter, 26579 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 29428 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:47:38,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 29428 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 23:47:38,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12029 states. [2022-07-19 23:47:39,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12029 to 9695. [2022-07-19 23:47:39,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9695 states, 7114 states have (on average 1.2874613438290694) internal successors, (9159), 7279 states have internal predecessors, (9159), 1856 states have call successors, (1856), 695 states have call predecessors, (1856), 724 states have return successors, (2036), 1828 states have call predecessors, (2036), 1855 states have call successors, (2036) [2022-07-19 23:47:39,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9695 states to 9695 states and 13051 transitions. [2022-07-19 23:47:39,170 INFO L78 Accepts]: Start accepts. Automaton has 9695 states and 13051 transitions. Word has length 297 [2022-07-19 23:47:39,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:47:39,171 INFO L495 AbstractCegarLoop]: Abstraction has 9695 states and 13051 transitions. [2022-07-19 23:47:39,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 15.0) internal successors, (150), 9 states have internal predecessors, (150), 4 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (32), 5 states have call predecessors, (32), 4 states have call successors, (32) [2022-07-19 23:47:39,171 INFO L276 IsEmpty]: Start isEmpty. Operand 9695 states and 13051 transitions. [2022-07-19 23:47:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-07-19 23:47:39,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:47:39,184 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2022-07-19 23:47:39,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 23:47:39,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-19 23:47:39,408 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:47:39,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:47:39,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1687595063, now seen corresponding path program 1 times [2022-07-19 23:47:39,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:47:39,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270156585] [2022-07-19 23:47:39,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:47:39,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:47:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:47:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:47:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:47:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:47:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:47:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:47:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:47:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:47:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:47:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:47:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 23:47:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 23:47:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 23:47:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 23:47:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 23:47:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:47:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 23:47:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 23:47:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:47:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 23:47:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:47:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:47:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 23:47:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 23:47:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 23:47:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:47:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 23:47:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:47:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 23:47:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-19 23:47:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-19 23:47:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-19 23:47:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-07-19 23:47:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-07-19 23:47:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:47:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-07-19 23:47:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:47:39,778 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-07-19 23:47:39,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:47:39,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270156585] [2022-07-19 23:47:39,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270156585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:47:39,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:47:39,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 23:47:39,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300441932] [2022-07-19 23:47:39,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:47:39,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 23:47:39,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:47:39,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 23:47:39,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:47:39,781 INFO L87 Difference]: Start difference. First operand 9695 states and 13051 transitions. Second operand has 8 states, 8 states have (on average 23.125) internal successors, (185), 3 states have internal predecessors, (185), 3 states have call successors, (38), 7 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-07-19 23:47:46,936 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:47:50,707 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:47:52,825 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:47:54,940 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:47:57,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:47:59,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:48:01,855 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:48:03,967 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:48:06,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:48:08,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:48:10,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:48:10,658 INFO L93 Difference]: Finished difference Result 27808 states and 37779 transitions. [2022-07-19 23:48:10,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 23:48:10,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.125) internal successors, (185), 3 states have internal predecessors, (185), 3 states have call successors, (38), 7 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 327 [2022-07-19 23:48:10,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:48:10,718 INFO L225 Difference]: With dead ends: 27808 [2022-07-19 23:48:10,718 INFO L226 Difference]: Without dead ends: 18177 [2022-07-19 23:48:10,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2022-07-19 23:48:10,744 INFO L413 NwaCegarLoop]: 2772 mSDtfsCounter, 3688 mSDsluCounter, 5101 mSDsCounter, 0 mSdLazyCounter, 6245 mSolverCounterSat, 1796 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4040 SdHoareTripleChecker+Valid, 7873 SdHoareTripleChecker+Invalid, 8050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1796 IncrementalHoareTripleChecker+Valid, 6245 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:48:10,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4040 Valid, 7873 Invalid, 8050 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1796 Valid, 6245 Invalid, 9 Unknown, 0 Unchecked, 30.0s Time] [2022-07-19 23:48:10,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18177 states. [2022-07-19 23:48:11,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18177 to 15968. [2022-07-19 23:48:11,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15968 states, 11686 states have (on average 1.2841006332363512) internal successors, (15006), 11948 states have internal predecessors, (15006), 3056 states have call successors, (3056), 1179 states have call predecessors, (3056), 1225 states have return successors, (3276), 3025 states have call predecessors, (3276), 3055 states have call successors, (3276) [2022-07-19 23:48:11,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15968 states to 15968 states and 21338 transitions. [2022-07-19 23:48:11,386 INFO L78 Accepts]: Start accepts. Automaton has 15968 states and 21338 transitions. Word has length 327 [2022-07-19 23:48:11,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:48:11,387 INFO L495 AbstractCegarLoop]: Abstraction has 15968 states and 21338 transitions. [2022-07-19 23:48:11,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.125) internal successors, (185), 3 states have internal predecessors, (185), 3 states have call successors, (38), 7 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-07-19 23:48:11,387 INFO L276 IsEmpty]: Start isEmpty. Operand 15968 states and 21338 transitions. [2022-07-19 23:48:11,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-07-19 23:48:11,404 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:48:11,404 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:48:11,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 23:48:11,404 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:48:11,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:48:11,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1786146388, now seen corresponding path program 1 times [2022-07-19 23:48:11,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:48:11,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045534957] [2022-07-19 23:48:11,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:48:11,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:48:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:48:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:48:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:48:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:48:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:48:11,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:48:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:48:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:48:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:48:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:48:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 23:48:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 23:48:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 23:48:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 23:48:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-19 23:48:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 23:48:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 23:48:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-19 23:48:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 23:48:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 23:48:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 23:48:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-19 23:48:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-19 23:48:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-19 23:48:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-19 23:48:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-07-19 23:48:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-19 23:48:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-19 23:48:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-07-19 23:48:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-07-19 23:48:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-07-19 23:48:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-07-19 23:48:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:11,879 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2022-07-19 23:48:11,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:48:11,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045534957] [2022-07-19 23:48:11,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045534957] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:48:11,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731215712] [2022-07-19 23:48:11,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:48:11,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:48:11,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:48:11,896 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:48:11,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 23:48:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:13,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 3458 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-19 23:48:13,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:48:13,058 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2022-07-19 23:48:13,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:48:13,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731215712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:48:13,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:48:13,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 10 [2022-07-19 23:48:13,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147247776] [2022-07-19 23:48:13,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:48:13,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:48:13,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:48:13,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:48:13,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 23:48:13,061 INFO L87 Difference]: Start difference. First operand 15968 states and 21338 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2022-07-19 23:48:14,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:48:14,034 INFO L93 Difference]: Finished difference Result 35396 states and 48053 transitions. [2022-07-19 23:48:14,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 23:48:14,035 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 318 [2022-07-19 23:48:14,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:48:14,087 INFO L225 Difference]: With dead ends: 35396 [2022-07-19 23:48:14,087 INFO L226 Difference]: Without dead ends: 19492 [2022-07-19 23:48:14,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 387 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 23:48:14,121 INFO L413 NwaCegarLoop]: 2885 mSDtfsCounter, 991 mSDsluCounter, 10325 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 13210 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:48:14,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 13210 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 23:48:14,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19492 states. [2022-07-19 23:48:14,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19492 to 15994. [2022-07-19 23:48:14,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15994 states, 11708 states have (on average 1.283566791937137) internal successors, (15028), 11968 states have internal predecessors, (15028), 3056 states have call successors, (3056), 1179 states have call predecessors, (3056), 1229 states have return successors, (3308), 3031 states have call predecessors, (3308), 3055 states have call successors, (3308) [2022-07-19 23:48:14,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15994 states to 15994 states and 21392 transitions. [2022-07-19 23:48:14,727 INFO L78 Accepts]: Start accepts. Automaton has 15994 states and 21392 transitions. Word has length 318 [2022-07-19 23:48:14,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:48:14,728 INFO L495 AbstractCegarLoop]: Abstraction has 15994 states and 21392 transitions. [2022-07-19 23:48:14,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2022-07-19 23:48:14,728 INFO L276 IsEmpty]: Start isEmpty. Operand 15994 states and 21392 transitions. [2022-07-19 23:48:14,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-07-19 23:48:14,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:48:14,761 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 5, 5, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:48:14,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-19 23:48:14,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:48:14,976 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:48:14,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:48:14,976 INFO L85 PathProgramCache]: Analyzing trace with hash -10081009, now seen corresponding path program 1 times [2022-07-19 23:48:14,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:48:14,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310357574] [2022-07-19 23:48:14,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:48:14,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:48:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:48:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:48:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:48:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:48:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:48:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:48:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:48:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:48:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:48:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:48:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 23:48:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 23:48:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 23:48:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 23:48:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 23:48:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 23:48:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-19 23:48:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-19 23:48:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-19 23:48:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-19 23:48:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-19 23:48:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-07-19 23:48:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-19 23:48:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-19 23:48:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-19 23:48:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-07-19 23:48:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-07-19 23:48:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:48:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:48:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 23:48:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 23:48:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-07-19 23:48:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-07-19 23:48:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-07-19 23:48:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:15,396 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2022-07-19 23:48:15,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:48:15,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310357574] [2022-07-19 23:48:15,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310357574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:48:15,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:48:15,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 23:48:15,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882384878] [2022-07-19 23:48:15,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:48:15,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 23:48:15,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:48:15,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 23:48:15,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:48:15,399 INFO L87 Difference]: Start difference. First operand 15994 states and 21392 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (43), 6 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-19 23:48:21,031 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:48:23,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:48:25,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:48:25,590 INFO L93 Difference]: Finished difference Result 34182 states and 46179 transitions. [2022-07-19 23:48:25,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 23:48:25,597 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (43), 6 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 321 [2022-07-19 23:48:25,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:48:25,652 INFO L225 Difference]: With dead ends: 34182 [2022-07-19 23:48:25,652 INFO L226 Difference]: Without dead ends: 18252 [2022-07-19 23:48:25,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-07-19 23:48:25,692 INFO L413 NwaCegarLoop]: 1912 mSDtfsCounter, 2224 mSDsluCounter, 3729 mSDsCounter, 0 mSdLazyCounter, 3757 mSolverCounterSat, 1802 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2303 SdHoareTripleChecker+Valid, 5641 SdHoareTripleChecker+Invalid, 5561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1802 IncrementalHoareTripleChecker+Valid, 3757 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:48:25,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2303 Valid, 5641 Invalid, 5561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1802 Valid, 3757 Invalid, 2 Unknown, 0 Unchecked, 9.3s Time] [2022-07-19 23:48:25,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18252 states. [2022-07-19 23:48:26,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18252 to 16114. [2022-07-19 23:48:26,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16114 states, 11828 states have (on average 1.2806898884004059) internal successors, (15148), 12088 states have internal predecessors, (15148), 3056 states have call successors, (3056), 1179 states have call predecessors, (3056), 1229 states have return successors, (3308), 3031 states have call predecessors, (3308), 3055 states have call successors, (3308) [2022-07-19 23:48:26,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16114 states to 16114 states and 21512 transitions. [2022-07-19 23:48:26,331 INFO L78 Accepts]: Start accepts. Automaton has 16114 states and 21512 transitions. Word has length 321 [2022-07-19 23:48:26,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:48:26,331 INFO L495 AbstractCegarLoop]: Abstraction has 16114 states and 21512 transitions. [2022-07-19 23:48:26,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (43), 6 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-19 23:48:26,331 INFO L276 IsEmpty]: Start isEmpty. Operand 16114 states and 21512 transitions. [2022-07-19 23:48:26,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-07-19 23:48:26,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:48:26,345 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 5, 5, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:48:26,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 23:48:26,345 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:48:26,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:48:26,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1510371305, now seen corresponding path program 1 times [2022-07-19 23:48:26,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:48:26,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649884144] [2022-07-19 23:48:26,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:48:26,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:48:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:48:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:48:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:48:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:48:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:48:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:48:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:48:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:48:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:48:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:48:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 23:48:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 23:48:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 23:48:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 23:48:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 23:48:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 23:48:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-19 23:48:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-19 23:48:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-19 23:48:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-19 23:48:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-19 23:48:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-07-19 23:48:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-19 23:48:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-19 23:48:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-19 23:48:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-07-19 23:48:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-07-19 23:48:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:48:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:48:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 23:48:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 23:48:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-07-19 23:48:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-07-19 23:48:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-07-19 23:48:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2022-07-19 23:48:26,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:48:26,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649884144] [2022-07-19 23:48:26,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649884144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:48:26,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:48:26,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 23:48:26,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037909447] [2022-07-19 23:48:26,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:48:26,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 23:48:26,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:48:26,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 23:48:26,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:48:26,768 INFO L87 Difference]: Start difference. First operand 16114 states and 21512 transitions. Second operand has 8 states, 8 states have (on average 21.25) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (43), 6 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-19 23:48:32,510 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:48:35,650 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:48:37,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:48:39,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:48:39,368 INFO L93 Difference]: Finished difference Result 34342 states and 46361 transitions. [2022-07-19 23:48:39,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 23:48:39,369 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (43), 6 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 321 [2022-07-19 23:48:39,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:48:39,418 INFO L225 Difference]: With dead ends: 34342 [2022-07-19 23:48:39,419 INFO L226 Difference]: Without dead ends: 18292 [2022-07-19 23:48:39,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-19 23:48:39,453 INFO L413 NwaCegarLoop]: 1913 mSDtfsCounter, 1975 mSDsluCounter, 4982 mSDsCounter, 0 mSdLazyCounter, 5071 mSolverCounterSat, 1639 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2104 SdHoareTripleChecker+Valid, 6895 SdHoareTripleChecker+Invalid, 6713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1639 IncrementalHoareTripleChecker+Valid, 5071 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:48:39,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2104 Valid, 6895 Invalid, 6713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1639 Valid, 5071 Invalid, 3 Unknown, 0 Unchecked, 11.7s Time] [2022-07-19 23:48:39,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18292 states. [2022-07-19 23:48:40,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18292 to 16138. [2022-07-19 23:48:40,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16138 states, 11852 states have (on average 1.280121498481269) internal successors, (15172), 12112 states have internal predecessors, (15172), 3056 states have call successors, (3056), 1179 states have call predecessors, (3056), 1229 states have return successors, (3308), 3031 states have call predecessors, (3308), 3055 states have call successors, (3308) [2022-07-19 23:48:40,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16138 states to 16138 states and 21536 transitions. [2022-07-19 23:48:40,144 INFO L78 Accepts]: Start accepts. Automaton has 16138 states and 21536 transitions. Word has length 321 [2022-07-19 23:48:40,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:48:40,145 INFO L495 AbstractCegarLoop]: Abstraction has 16138 states and 21536 transitions. [2022-07-19 23:48:40,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (43), 6 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-19 23:48:40,145 INFO L276 IsEmpty]: Start isEmpty. Operand 16138 states and 21536 transitions. [2022-07-19 23:48:40,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-07-19 23:48:40,158 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:48:40,159 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 5, 5, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:48:40,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 23:48:40,159 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:48:40,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:48:40,160 INFO L85 PathProgramCache]: Analyzing trace with hash -106502119, now seen corresponding path program 1 times [2022-07-19 23:48:40,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:48:40,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839383965] [2022-07-19 23:48:40,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:48:40,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:48:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:48:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:48:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:48:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:48:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:48:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:48:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:48:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:48:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:48:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:48:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 23:48:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 23:48:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 23:48:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 23:48:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 23:48:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 23:48:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-19 23:48:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-19 23:48:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-19 23:48:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-19 23:48:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-19 23:48:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-07-19 23:48:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-19 23:48:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-19 23:48:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-19 23:48:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-07-19 23:48:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-07-19 23:48:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:48:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:48:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 23:48:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 23:48:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-07-19 23:48:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-07-19 23:48:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-07-19 23:48:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-07-19 23:48:40,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:48:40,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839383965] [2022-07-19 23:48:40,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839383965] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:48:40,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:48:40,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 23:48:40,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563993019] [2022-07-19 23:48:40,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:48:40,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 23:48:40,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:48:40,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 23:48:40,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:48:40,574 INFO L87 Difference]: Start difference. First operand 16138 states and 21536 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (43), 6 states have call predecessors, (43), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-19 23:48:45,239 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:48:48,108 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:48:50,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:48:52,550 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:48:54,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:48:56,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:48:58,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:48:58,026 INFO L93 Difference]: Finished difference Result 34506 states and 46577 transitions. [2022-07-19 23:48:58,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 23:48:58,026 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (43), 6 states have call predecessors, (43), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 321 [2022-07-19 23:48:58,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:48:58,078 INFO L225 Difference]: With dead ends: 34506 [2022-07-19 23:48:58,078 INFO L226 Difference]: Without dead ends: 18432 [2022-07-19 23:48:58,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:48:58,115 INFO L413 NwaCegarLoop]: 1913 mSDtfsCounter, 2413 mSDsluCounter, 3287 mSDsCounter, 0 mSdLazyCounter, 3256 mSolverCounterSat, 2154 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2542 SdHoareTripleChecker+Valid, 5200 SdHoareTripleChecker+Invalid, 5416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2154 IncrementalHoareTripleChecker+Valid, 3256 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:48:58,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2542 Valid, 5200 Invalid, 5416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2154 Valid, 3256 Invalid, 6 Unknown, 0 Unchecked, 16.7s Time] [2022-07-19 23:48:58,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18432 states. [2022-07-19 23:48:58,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18432 to 16148. [2022-07-19 23:48:58,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16148 states, 11862 states have (on average 1.279885348170629) internal successors, (15182), 12122 states have internal predecessors, (15182), 3056 states have call successors, (3056), 1179 states have call predecessors, (3056), 1229 states have return successors, (3308), 3031 states have call predecessors, (3308), 3055 states have call successors, (3308) [2022-07-19 23:48:58,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16148 states to 16148 states and 21546 transitions. [2022-07-19 23:48:58,819 INFO L78 Accepts]: Start accepts. Automaton has 16148 states and 21546 transitions. Word has length 321 [2022-07-19 23:48:58,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:48:58,821 INFO L495 AbstractCegarLoop]: Abstraction has 16148 states and 21546 transitions. [2022-07-19 23:48:58,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (43), 6 states have call predecessors, (43), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-19 23:48:58,822 INFO L276 IsEmpty]: Start isEmpty. Operand 16148 states and 21546 transitions. [2022-07-19 23:48:58,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-07-19 23:48:58,867 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:48:58,867 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 5, 5, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:48:58,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 23:48:58,868 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:48:58,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:48:58,868 INFO L85 PathProgramCache]: Analyzing trace with hash -917464474, now seen corresponding path program 1 times [2022-07-19 23:48:58,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:48:58,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659590754] [2022-07-19 23:48:58,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:48:58,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:48:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:48:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:48:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:48:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:48:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:48:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:48:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:48:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:48:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:48:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:48:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 23:48:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 23:48:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 23:48:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 23:48:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 23:48:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 23:48:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-19 23:48:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-19 23:48:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-19 23:48:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-19 23:48:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-19 23:48:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-07-19 23:48:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-19 23:48:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-19 23:48:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-07-19 23:48:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-19 23:48:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-07-19 23:48:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:48:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:48:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 23:48:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 23:48:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-07-19 23:48:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:48:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-07-19 23:48:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-07-19 23:48:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:48:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-07-19 23:48:59,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:48:59,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659590754] [2022-07-19 23:48:59,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659590754] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:48:59,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420267017] [2022-07-19 23:48:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:48:59,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:48:59,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:48:59,348 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:48:59,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 23:49:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:00,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 3689 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 23:49:00,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:49:00,547 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2022-07-19 23:49:00,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:49:00,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420267017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:49:00,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:49:00,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-07-19 23:49:00,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343739014] [2022-07-19 23:49:00,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:49:00,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:49:00,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:49:00,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:49:00,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-19 23:49:00,550 INFO L87 Difference]: Start difference. First operand 16148 states and 21546 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-19 23:49:01,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:49:01,185 INFO L93 Difference]: Finished difference Result 32706 states and 43747 transitions. [2022-07-19 23:49:01,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:49:01,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 326 [2022-07-19 23:49:01,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:49:01,240 INFO L225 Difference]: With dead ends: 32706 [2022-07-19 23:49:01,240 INFO L226 Difference]: Without dead ends: 16622 [2022-07-19 23:49:01,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:49:01,279 INFO L413 NwaCegarLoop]: 2193 mSDtfsCounter, 276 mSDsluCounter, 6207 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 8400 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:49:01,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 8400 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 23:49:01,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16622 states. [2022-07-19 23:49:01,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16622 to 16130. [2022-07-19 23:49:01,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16130 states, 11856 states have (on average 1.2790148448043186) internal successors, (15164), 12116 states have internal predecessors, (15164), 3044 states have call successors, (3044), 1179 states have call predecessors, (3044), 1229 states have return successors, (3296), 3019 states have call predecessors, (3296), 3043 states have call successors, (3296) [2022-07-19 23:49:01,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16130 states to 16130 states and 21504 transitions. [2022-07-19 23:49:01,998 INFO L78 Accepts]: Start accepts. Automaton has 16130 states and 21504 transitions. Word has length 326 [2022-07-19 23:49:01,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:49:01,998 INFO L495 AbstractCegarLoop]: Abstraction has 16130 states and 21504 transitions. [2022-07-19 23:49:01,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-19 23:49:02,007 INFO L276 IsEmpty]: Start isEmpty. Operand 16130 states and 21504 transitions. [2022-07-19 23:49:02,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-07-19 23:49:02,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:49:02,024 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:49:02,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 23:49:02,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:49:02,248 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:49:02,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:49:02,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1252577741, now seen corresponding path program 1 times [2022-07-19 23:49:02,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:49:02,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873814802] [2022-07-19 23:49:02,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:49:02,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:49:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:49:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:49:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:49:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:49:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:49:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:49:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:49:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:49:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:49:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 23:49:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 23:49:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 23:49:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 23:49:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 23:49:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-19 23:49:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:49:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:49:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:49:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 23:49:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-19 23:49:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-19 23:49:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-19 23:49:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-19 23:49:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-19 23:49:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:49:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-19 23:49:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-19 23:49:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-19 23:49:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-07-19 23:49:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-19 23:49:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-07-19 23:49:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-07-19 23:49:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-07-19 23:49:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:49:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-07-19 23:49:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:49:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-07-19 23:49:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:49:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-07-19 23:49:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-07-19 23:49:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:49:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2022-07-19 23:49:02,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:49:02,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873814802] [2022-07-19 23:49:02,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873814802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:49:02,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:49:02,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 23:49:02,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409878621] [2022-07-19 23:49:02,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:49:02,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 23:49:02,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:49:02,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 23:49:02,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 23:49:02,697 INFO L87 Difference]: Start difference. First operand 16130 states and 21504 transitions. Second operand has 11 states, 11 states have (on average 14.636363636363637) internal successors, (161), 6 states have internal predecessors, (161), 2 states have call successors, (41), 6 states have call predecessors, (41), 2 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-19 23:49:10,606 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:49:12,723 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:49:14,828 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:49:16,933 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:49:19,039 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []