./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.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 6985379bcc34be713545a774d70e5414e9690ba41356ad39bb00629a60c9ae14 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 00:14:49,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 00:14:49,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 00:14:49,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 00:14:49,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 00:14:49,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 00:14:49,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 00:14:49,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 00:14:49,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 00:14:49,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 00:14:49,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 00:14:49,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 00:14:49,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 00:14:49,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 00:14:49,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 00:14:49,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 00:14:49,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 00:14:49,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 00:14:49,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 00:14:49,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 00:14:49,395 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 00:14:49,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 00:14:49,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 00:14:49,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 00:14:49,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 00:14:49,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 00:14:49,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 00:14:49,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 00:14:49,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 00:14:49,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 00:14:49,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 00:14:49,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 00:14:49,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 00:14:49,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 00:14:49,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 00:14:49,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 00:14:49,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 00:14:49,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 00:14:49,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 00:14:49,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 00:14:49,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 00:14:49,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 00:14:49,413 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-14 00:14:49,437 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 00:14:49,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 00:14:49,438 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 00:14:49,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 00:14:49,440 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 00:14:49,440 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 00:14:49,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 00:14:49,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 00:14:49,440 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 00:14:49,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 00:14:49,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 00:14:49,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 00:14:49,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 00:14:49,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 00:14:49,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 00:14:49,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 00:14:49,442 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 00:14:49,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 00:14:49,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 00:14:49,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 00:14:49,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 00:14:49,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:14:49,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 00:14:49,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 00:14:49,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 00:14:49,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 00:14:49,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 00:14:49,444 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 00:14:49,444 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 00:14:49,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 00:14:49,445 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6985379bcc34be713545a774d70e5414e9690ba41356ad39bb00629a60c9ae14 [2022-07-14 00:14:49,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 00:14:49,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 00:14:49,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 00:14:49,674 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 00:14:49,674 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 00:14:49,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2022-07-14 00:14:49,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a15758129/c57ef2fa2b124586b9b58ae7ec4f3759/FLAGf9ddf6374 [2022-07-14 00:14:50,247 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 00:14:50,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2022-07-14 00:14:50,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a15758129/c57ef2fa2b124586b9b58ae7ec4f3759/FLAGf9ddf6374 [2022-07-14 00:14:50,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a15758129/c57ef2fa2b124586b9b58ae7ec4f3759 [2022-07-14 00:14:50,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 00:14:50,453 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 00:14:50,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 00:14:50,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 00:14:50,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 00:14:50,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:14:50" (1/1) ... [2022-07-14 00:14:50,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31e5c1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:50, skipping insertion in model container [2022-07-14 00:14:50,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:14:50" (1/1) ... [2022-07-14 00:14:50,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 00:14:50,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 00:14:51,371 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i[160997,161010] [2022-07-14 00:14:51,697 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-14 00:14:51,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:14:51,724 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 00:14:51,827 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i[160997,161010] [2022-07-14 00:14:51,996 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-14 00:14:51,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:14:52,047 INFO L208 MainTranslator]: Completed translation [2022-07-14 00:14:52,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:52 WrapperNode [2022-07-14 00:14:52,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 00:14:52,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 00:14:52,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 00:14:52,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 00:14:52,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:52" (1/1) ... [2022-07-14 00:14:52,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:52" (1/1) ... [2022-07-14 00:14:52,186 INFO L137 Inliner]: procedures = 184, calls = 840, calls flagged for inlining = 74, calls inlined = 63, statements flattened = 2136 [2022-07-14 00:14:52,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 00:14:52,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 00:14:52,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 00:14:52,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 00:14:52,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:52" (1/1) ... [2022-07-14 00:14:52,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:52" (1/1) ... [2022-07-14 00:14:52,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:52" (1/1) ... [2022-07-14 00:14:52,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:52" (1/1) ... [2022-07-14 00:14:52,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:52" (1/1) ... [2022-07-14 00:14:52,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:52" (1/1) ... [2022-07-14 00:14:52,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:52" (1/1) ... [2022-07-14 00:14:52,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 00:14:52,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 00:14:52,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 00:14:52,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 00:14:52,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:52" (1/1) ... [2022-07-14 00:14:52,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:14:52,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:14:52,333 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) [2022-07-14 00:14:52,419 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 [2022-07-14 00:14:52,446 INFO L130 BoogieDeclarations]: Found specification of procedure broadcast_write [2022-07-14 00:14:52,446 INFO L138 BoogieDeclarations]: Found implementation of procedure broadcast_write [2022-07-14 00:14:52,446 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-14 00:14:52,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-14 00:14:52,447 INFO L130 BoogieDeclarations]: Found specification of procedure genphy_config_aneg [2022-07-14 00:14:52,447 INFO L138 BoogieDeclarations]: Found implementation of procedure genphy_config_aneg [2022-07-14 00:14:52,447 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-07-14 00:14:52,448 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-07-14 00:14:52,448 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_put [2022-07-14 00:14:52,448 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_put [2022-07-14 00:14:52,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-14 00:14:52,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-14 00:14:52,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 00:14:52,449 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-07-14 00:14:52,500 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-07-14 00:14:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure phy2txts [2022-07-14 00:14:52,501 INFO L138 BoogieDeclarations]: Found implementation of procedure phy2txts [2022-07-14 00:14:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-07-14 00:14:52,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-07-14 00:14:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ts_info [2022-07-14 00:14:52,501 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ts_info [2022-07-14 00:14:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-14 00:14:52,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-14 00:14:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2022-07-14 00:14:52,501 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2022-07-14 00:14:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_write [2022-07-14 00:14:52,501 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_write [2022-07-14 00:14:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_intr [2022-07-14 00:14:52,501 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_intr [2022-07-14 00:14:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure tdr_write [2022-07-14 00:14:52,502 INFO L138 BoogieDeclarations]: Found implementation of procedure tdr_write [2022-07-14 00:14:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-14 00:14:52,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-14 00:14:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-14 00:14:52,502 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-14 00:14:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure exts_chan_to_edata [2022-07-14 00:14:52,502 INFO L138 BoogieDeclarations]: Found implementation of procedure exts_chan_to_edata [2022-07-14 00:14:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure skb_complete_tx_timestamp [2022-07-14 00:14:52,502 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_complete_tx_timestamp [2022-07-14 00:14:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-07-14 00:14:52,502 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-07-14 00:14:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-07-14 00:14:52,502 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-07-14 00:14:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 00:14:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-14 00:14:52,502 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-14 00:14:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-14 00:14:52,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-14 00:14:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_rxtstamp [2022-07-14 00:14:52,503 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_rxtstamp [2022-07-14 00:14:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-14 00:14:52,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-14 00:14:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read [2022-07-14 00:14:52,503 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read [2022-07-14 00:14:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-14 00:14:52,503 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-14 00:14:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-14 00:14:52,503 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-14 00:14:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 00:14:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure prune_rx_ts [2022-07-14 00:14:52,503 INFO L138 BoogieDeclarations]: Found implementation of procedure prune_rx_ts [2022-07-14 00:14:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-14 00:14:52,503 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-14 00:14:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-07-14 00:14:52,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-07-14 00:14:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 00:14:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_init [2022-07-14 00:14:52,504 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_init [2022-07-14 00:14:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 00:14:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 00:14:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-14 00:14:52,504 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-14 00:14:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-14 00:14:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_ktime [2022-07-14 00:14:52,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_ktime [2022-07-14 00:14:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-07-14 00:14:52,504 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-07-14 00:14:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 00:14:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-07-14 00:14:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-14 00:14:52,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-14 00:14:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-07-14 00:14:52,504 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-07-14 00:14:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-14 00:14:52,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-14 00:14:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-14 00:14:52,505 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-14 00:14:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure enable_status_frames [2022-07-14 00:14:52,505 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_status_frames [2022-07-14 00:14:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_hwtstamp [2022-07-14 00:14:52,505 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_hwtstamp [2022-07-14 00:14:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-07-14 00:14:52,505 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-07-14 00:14:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write [2022-07-14 00:14:52,505 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write [2022-07-14 00:14:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-07-14 00:14:52,505 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-07-14 00:14:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 00:14:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 00:14:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-14 00:14:52,505 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-14 00:14:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-14 00:14:52,505 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-14 00:14:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_get [2022-07-14 00:14:52,506 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_get [2022-07-14 00:14:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ack_interrupt [2022-07-14 00:14:52,506 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ack_interrupt [2022-07-14 00:14:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure ext_read [2022-07-14 00:14:52,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_read [2022-07-14 00:14:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-07-14 00:14:52,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-07-14 00:14:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-14 00:14:52,506 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-14 00:14:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-14 00:14:52,506 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-14 00:14:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-14 00:14:52,506 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-14 00:14:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure skb_mac_header [2022-07-14 00:14:52,506 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_mac_header [2022-07-14 00:14:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_txtstamp [2022-07-14 00:14:52,506 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_txtstamp [2022-07-14 00:14:52,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 00:14:52,507 INFO L130 BoogieDeclarations]: Found specification of procedure enable_broadcast [2022-07-14 00:14:52,507 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_broadcast [2022-07-14 00:14:52,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-14 00:14:52,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-14 00:14:52,508 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-14 00:14:52,508 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-14 00:14:52,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 00:14:52,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 00:14:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_timespec [2022-07-14 00:14:52,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_timespec [2022-07-14 00:14:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure ext_write [2022-07-14 00:14:52,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_write [2022-07-14 00:14:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-14 00:14:52,509 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-14 00:14:52,988 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 00:14:52,990 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 00:14:53,341 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-14 00:14:54,478 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 00:14:54,508 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 00:14:54,509 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-14 00:14:54,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:14:54 BoogieIcfgContainer [2022-07-14 00:14:54,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 00:14:54,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 00:14:54,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 00:14:54,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 00:14:54,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 12:14:50" (1/3) ... [2022-07-14 00:14:54,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d4d78c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:14:54, skipping insertion in model container [2022-07-14 00:14:54,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:14:52" (2/3) ... [2022-07-14 00:14:54,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d4d78c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:14:54, skipping insertion in model container [2022-07-14 00:14:54,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:14:54" (3/3) ... [2022-07-14 00:14:54,531 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2022-07-14 00:14:54,560 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 00:14:54,560 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-14 00:14:54,685 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 00:14:54,692 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@76566f27, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@39a8807d [2022-07-14 00:14:54,692 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-14 00:14:54,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 883 states, 628 states have (on average 1.3678343949044587) internal successors, (859), 645 states have internal predecessors, (859), 193 states have call successors, (193), 61 states have call predecessors, (193), 60 states have return successors, (190), 189 states have call predecessors, (190), 190 states have call successors, (190) [2022-07-14 00:14:54,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-14 00:14:54,711 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:14:54,712 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-14 00:14:54,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:14:54,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:14:54,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1822953326, now seen corresponding path program 1 times [2022-07-14 00:14:54,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:14:54,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386917634] [2022-07-14 00:14:54,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:14:54,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:14:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:14:55,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:14:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:14:55,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:14:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:14:55,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-14 00:14:55,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:14:55,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386917634] [2022-07-14 00:14:55,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386917634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:14:55,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:14:55,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:14:55,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642121603] [2022-07-14 00:14:55,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:14:55,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:14:55,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:14:55,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:14:55,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:14:55,191 INFO L87 Difference]: Start difference. First operand has 883 states, 628 states have (on average 1.3678343949044587) internal successors, (859), 645 states have internal predecessors, (859), 193 states have call successors, (193), 61 states have call predecessors, (193), 60 states have return successors, (190), 189 states have call predecessors, (190), 190 states have call successors, (190) Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 00:14:58,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:14:58,828 INFO L93 Difference]: Finished difference Result 2819 states and 4163 transitions. [2022-07-14 00:14:58,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 00:14:58,831 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2022-07-14 00:14:58,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:14:58,850 INFO L225 Difference]: With dead ends: 2819 [2022-07-14 00:14:58,851 INFO L226 Difference]: Without dead ends: 1895 [2022-07-14 00:14:58,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-14 00:14:58,861 INFO L413 NwaCegarLoop]: 1295 mSDtfsCounter, 1782 mSDsluCounter, 2675 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1939 SdHoareTripleChecker+Valid, 3970 SdHoareTripleChecker+Invalid, 3094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-14 00:14:58,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1939 Valid, 3970 Invalid, 3094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-14 00:14:58,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2022-07-14 00:14:58,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1715. [2022-07-14 00:14:58,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1225 states have (on average 1.3061224489795917) internal successors, (1600), 1250 states have internal predecessors, (1600), 370 states have call successors, (370), 118 states have call predecessors, (370), 119 states have return successors, (383), 368 states have call predecessors, (383), 369 states have call successors, (383) [2022-07-14 00:14:58,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2353 transitions. [2022-07-14 00:14:58,982 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2353 transitions. Word has length 32 [2022-07-14 00:14:58,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:14:58,982 INFO L495 AbstractCegarLoop]: Abstraction has 1715 states and 2353 transitions. [2022-07-14 00:14:58,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 00:14:58,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2353 transitions. [2022-07-14 00:14:58,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-14 00:14:58,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:14:58,990 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-14 00:14:58,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 00:14:58,990 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:14:58,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:14:58,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1119313245, now seen corresponding path program 1 times [2022-07-14 00:14:58,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:14:58,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798783914] [2022-07-14 00:14:58,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:14:59,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:14:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:14:59,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:14:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:14:59,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:14:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:14:59,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-14 00:14:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:14:59,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:14:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:14:59,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:14:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:14:59,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:14:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:14:59,167 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-14 00:14:59,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:14:59,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798783914] [2022-07-14 00:14:59,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798783914] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:14:59,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:14:59,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:14:59,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59797193] [2022-07-14 00:14:59,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:14:59,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:14:59,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:14:59,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:14:59,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:14:59,171 INFO L87 Difference]: Start difference. First operand 1715 states and 2353 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-14 00:15:02,262 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:15:03,735 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:15:04,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:15:04,416 INFO L93 Difference]: Finished difference Result 3891 states and 5498 transitions. [2022-07-14 00:15:04,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 00:15:04,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77 [2022-07-14 00:15:04,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:15:04,427 INFO L225 Difference]: With dead ends: 3891 [2022-07-14 00:15:04,427 INFO L226 Difference]: Without dead ends: 2184 [2022-07-14 00:15:04,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-14 00:15:04,434 INFO L413 NwaCegarLoop]: 1145 mSDtfsCounter, 902 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 2295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:15:04,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 2418 Invalid, 2295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-07-14 00:15:04,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2022-07-14 00:15:04,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 1825. [2022-07-14 00:15:04,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1311 states have (on average 1.3043478260869565) internal successors, (1710), 1339 states have internal predecessors, (1710), 382 states have call successors, (382), 127 states have call predecessors, (382), 131 states have return successors, (401), 380 states have call predecessors, (401), 381 states have call successors, (401) [2022-07-14 00:15:04,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2493 transitions. [2022-07-14 00:15:04,559 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2493 transitions. Word has length 77 [2022-07-14 00:15:04,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:15:04,559 INFO L495 AbstractCegarLoop]: Abstraction has 1825 states and 2493 transitions. [2022-07-14 00:15:04,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-14 00:15:04,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2493 transitions. [2022-07-14 00:15:04,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-14 00:15:04,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:15:04,564 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:15:04,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 00:15:04,565 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:15:04,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:15:04,565 INFO L85 PathProgramCache]: Analyzing trace with hash 549574912, now seen corresponding path program 1 times [2022-07-14 00:15:04,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:15:04,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008291519] [2022-07-14 00:15:04,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:15:04,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:15:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:04,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:15:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:04,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:15:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:04,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:15:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:04,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:15:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:04,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-14 00:15:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:04,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:15:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:04,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:15:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:04,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:04,800 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-14 00:15:04,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:15:04,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008291519] [2022-07-14 00:15:04,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008291519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:15:04,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:15:04,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:15:04,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450684036] [2022-07-14 00:15:04,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:15:04,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:15:04,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:15:04,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:15:04,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:15:04,803 INFO L87 Difference]: Start difference. First operand 1825 states and 2493 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-14 00:15:09,183 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 [] [2022-07-14 00:15:10,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:15:10,365 INFO L93 Difference]: Finished difference Result 5681 states and 8049 transitions. [2022-07-14 00:15:10,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 00:15:10,366 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 101 [2022-07-14 00:15:10,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:15:10,387 INFO L225 Difference]: With dead ends: 5681 [2022-07-14 00:15:10,388 INFO L226 Difference]: Without dead ends: 3885 [2022-07-14 00:15:10,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-14 00:15:10,396 INFO L413 NwaCegarLoop]: 1254 mSDtfsCounter, 3109 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 2099 mSolverCounterSat, 1636 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3274 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 3736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1636 IncrementalHoareTripleChecker+Valid, 2099 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-14 00:15:10,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3274 Valid, 2425 Invalid, 3736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1636 Valid, 2099 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-07-14 00:15:10,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2022-07-14 00:15:10,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3192. [2022-07-14 00:15:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 2318 states have (on average 1.2959447799827437) internal successors, (3004), 2360 states have internal predecessors, (3004), 630 states have call successors, (630), 234 states have call predecessors, (630), 243 states have return successors, (657), 627 states have call predecessors, (657), 629 states have call successors, (657) [2022-07-14 00:15:10,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 4291 transitions. [2022-07-14 00:15:10,534 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 4291 transitions. Word has length 101 [2022-07-14 00:15:10,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:15:10,536 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 4291 transitions. [2022-07-14 00:15:10,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-14 00:15:10,537 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 4291 transitions. [2022-07-14 00:15:10,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-14 00:15:10,542 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:15:10,542 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:15:10,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 00:15:10,543 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:15:10,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:15:10,543 INFO L85 PathProgramCache]: Analyzing trace with hash 614230688, now seen corresponding path program 1 times [2022-07-14 00:15:10,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:15:10,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245123270] [2022-07-14 00:15:10,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:15:10,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:15:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:10,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:15:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:10,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:15:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:10,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:15:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:10,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:15:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:10,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-14 00:15:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:10,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:15:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:10,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:15:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:10,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:10,762 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-14 00:15:10,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:15:10,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245123270] [2022-07-14 00:15:10,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245123270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:15:10,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:15:10,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:15:10,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446399240] [2022-07-14 00:15:10,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:15:10,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:15:10,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:15:10,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:15:10,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:15:10,765 INFO L87 Difference]: Start difference. First operand 3192 states and 4291 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-14 00:15:13,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:15:13,993 INFO L93 Difference]: Finished difference Result 5541 states and 7801 transitions. [2022-07-14 00:15:13,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 00:15:13,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 101 [2022-07-14 00:15:13,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:15:14,016 INFO L225 Difference]: With dead ends: 5541 [2022-07-14 00:15:14,016 INFO L226 Difference]: Without dead ends: 3880 [2022-07-14 00:15:14,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-14 00:15:14,026 INFO L413 NwaCegarLoop]: 1073 mSDtfsCounter, 1136 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 809 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 2438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 809 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:15:14,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 2347 Invalid, 2438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [809 Valid, 1629 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-14 00:15:14,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3880 states. [2022-07-14 00:15:14,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3880 to 3196. [2022-07-14 00:15:14,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3196 states, 2322 states have (on average 1.2954349698535745) internal successors, (3008), 2364 states have internal predecessors, (3008), 630 states have call successors, (630), 234 states have call predecessors, (630), 243 states have return successors, (657), 627 states have call predecessors, (657), 629 states have call successors, (657) [2022-07-14 00:15:14,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3196 states to 3196 states and 4295 transitions. [2022-07-14 00:15:14,234 INFO L78 Accepts]: Start accepts. Automaton has 3196 states and 4295 transitions. Word has length 101 [2022-07-14 00:15:14,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:15:14,235 INFO L495 AbstractCegarLoop]: Abstraction has 3196 states and 4295 transitions. [2022-07-14 00:15:14,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-14 00:15:14,235 INFO L276 IsEmpty]: Start isEmpty. Operand 3196 states and 4295 transitions. [2022-07-14 00:15:14,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-14 00:15:14,240 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:15:14,240 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:15:14,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 00:15:14,240 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:15:14,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:15:14,241 INFO L85 PathProgramCache]: Analyzing trace with hash -2002732129, now seen corresponding path program 1 times [2022-07-14 00:15:14,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:15:14,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591104851] [2022-07-14 00:15:14,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:15:14,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:15:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:14,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:15:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:14,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:15:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:14,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:15:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:14,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:15:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:14,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-14 00:15:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:14,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:15:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:14,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:15:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:14,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:14,477 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-14 00:15:14,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:15:14,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591104851] [2022-07-14 00:15:14,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591104851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:15:14,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:15:14,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-14 00:15:14,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671077174] [2022-07-14 00:15:14,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:15:14,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 00:15:14,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:15:14,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 00:15:14,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-14 00:15:14,480 INFO L87 Difference]: Start difference. First operand 3196 states and 4295 transitions. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-14 00:15:20,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:15:20,547 INFO L93 Difference]: Finished difference Result 7903 states and 11032 transitions. [2022-07-14 00:15:20,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-14 00:15:20,548 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) Word has length 103 [2022-07-14 00:15:20,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:15:20,573 INFO L225 Difference]: With dead ends: 7903 [2022-07-14 00:15:20,573 INFO L226 Difference]: Without dead ends: 4736 [2022-07-14 00:15:20,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2022-07-14 00:15:20,586 INFO L413 NwaCegarLoop]: 1271 mSDtfsCounter, 4508 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 5485 mSolverCounterSat, 2585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4791 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 8070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2585 IncrementalHoareTripleChecker+Valid, 5485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-07-14 00:15:20,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4791 Valid, 3444 Invalid, 8070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2585 Valid, 5485 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-07-14 00:15:20,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4736 states. [2022-07-14 00:15:20,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4736 to 3852. [2022-07-14 00:15:20,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3852 states, 2818 states have (on average 1.2945351312987934) internal successors, (3648), 2868 states have internal predecessors, (3648), 752 states have call successors, (752), 276 states have call predecessors, (752), 281 states have return successors, (777), 745 states have call predecessors, (777), 751 states have call successors, (777) [2022-07-14 00:15:20,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3852 states to 3852 states and 5177 transitions. [2022-07-14 00:15:20,777 INFO L78 Accepts]: Start accepts. Automaton has 3852 states and 5177 transitions. Word has length 103 [2022-07-14 00:15:20,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:15:20,778 INFO L495 AbstractCegarLoop]: Abstraction has 3852 states and 5177 transitions. [2022-07-14 00:15:20,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-14 00:15:20,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3852 states and 5177 transitions. [2022-07-14 00:15:20,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-14 00:15:20,787 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:15:20,787 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:15:20,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-14 00:15:20,787 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:15:20,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:15:20,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1480360647, now seen corresponding path program 1 times [2022-07-14 00:15:20,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:15:20,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809557162] [2022-07-14 00:15:20,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:15:20,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:15:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:20,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:15:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:20,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:15:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:20,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:15:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:20,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:15:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:20,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-14 00:15:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:20,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:15:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:20,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 00:15:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:21,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:21,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-14 00:15:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:21,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-14 00:15:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:21,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:21,080 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-14 00:15:21,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:15:21,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809557162] [2022-07-14 00:15:21,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809557162] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:15:21,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:15:21,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-14 00:15:21,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051355221] [2022-07-14 00:15:21,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:15:21,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 00:15:21,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:15:21,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 00:15:21,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-14 00:15:21,083 INFO L87 Difference]: Start difference. First operand 3852 states and 5177 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 00:15:26,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:15:26,083 INFO L93 Difference]: Finished difference Result 8467 states and 11797 transitions. [2022-07-14 00:15:26,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 00:15:26,084 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 132 [2022-07-14 00:15:26,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:15:26,106 INFO L225 Difference]: With dead ends: 8467 [2022-07-14 00:15:26,106 INFO L226 Difference]: Without dead ends: 4644 [2022-07-14 00:15:26,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-07-14 00:15:26,119 INFO L413 NwaCegarLoop]: 1082 mSDtfsCounter, 755 mSDsluCounter, 2768 mSDsCounter, 0 mSdLazyCounter, 3413 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 3850 SdHoareTripleChecker+Invalid, 3957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 3413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-14 00:15:26,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 3850 Invalid, 3957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 3413 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-14 00:15:26,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4644 states. [2022-07-14 00:15:26,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4644 to 3880. [2022-07-14 00:15:26,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3880 states, 2838 states have (on average 1.2924594785059902) internal successors, (3668), 2890 states have internal predecessors, (3668), 752 states have call successors, (752), 276 states have call predecessors, (752), 289 states have return successors, (789), 751 states have call predecessors, (789), 751 states have call successors, (789) [2022-07-14 00:15:26,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3880 states to 3880 states and 5209 transitions. [2022-07-14 00:15:26,281 INFO L78 Accepts]: Start accepts. Automaton has 3880 states and 5209 transitions. Word has length 132 [2022-07-14 00:15:26,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:15:26,282 INFO L495 AbstractCegarLoop]: Abstraction has 3880 states and 5209 transitions. [2022-07-14 00:15:26,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 00:15:26,284 INFO L276 IsEmpty]: Start isEmpty. Operand 3880 states and 5209 transitions. [2022-07-14 00:15:26,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-14 00:15:26,292 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:15:26,292 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:15:26,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-14 00:15:26,293 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:15:26,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:15:26,293 INFO L85 PathProgramCache]: Analyzing trace with hash 993276834, now seen corresponding path program 1 times [2022-07-14 00:15:26,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:15:26,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454949136] [2022-07-14 00:15:26,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:15:26,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:15:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:26,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:15:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:26,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:15:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:26,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:15:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:26,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:15:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:26,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-14 00:15:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:26,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:15:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:26,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 00:15:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:26,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:26,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:15:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:26,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:15:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:26,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:26,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:15:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:26,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-14 00:15:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:26,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-14 00:15:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:26,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:26,718 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-14 00:15:26,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:15:26,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454949136] [2022-07-14 00:15:26,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454949136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:15:26,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:15:26,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 00:15:26,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732458530] [2022-07-14 00:15:26,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:15:26,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 00:15:26,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:15:26,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 00:15:26,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:15:26,721 INFO L87 Difference]: Start difference. First operand 3880 states and 5209 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-14 00:15:31,730 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:15:33,282 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:15:34,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:15:34,376 INFO L93 Difference]: Finished difference Result 8476 states and 11732 transitions. [2022-07-14 00:15:34,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 00:15:34,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 153 [2022-07-14 00:15:34,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:15:34,400 INFO L225 Difference]: With dead ends: 8476 [2022-07-14 00:15:34,400 INFO L226 Difference]: Without dead ends: 4612 [2022-07-14 00:15:34,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-14 00:15:34,474 INFO L413 NwaCegarLoop]: 1103 mSDtfsCounter, 1565 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-07-14 00:15:34,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1699 Valid, 2439 Invalid, 2525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-07-14 00:15:34,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4612 states. [2022-07-14 00:15:34,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4612 to 3856. [2022-07-14 00:15:34,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3856 states, 2816 states have (on average 1.2879971590909092) internal successors, (3627), 2868 states have internal predecessors, (3627), 750 states have call successors, (750), 276 states have call predecessors, (750), 289 states have return successors, (785), 749 states have call predecessors, (785), 749 states have call successors, (785) [2022-07-14 00:15:34,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3856 states to 3856 states and 5162 transitions. [2022-07-14 00:15:34,658 INFO L78 Accepts]: Start accepts. Automaton has 3856 states and 5162 transitions. Word has length 153 [2022-07-14 00:15:34,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:15:34,659 INFO L495 AbstractCegarLoop]: Abstraction has 3856 states and 5162 transitions. [2022-07-14 00:15:34,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-14 00:15:34,659 INFO L276 IsEmpty]: Start isEmpty. Operand 3856 states and 5162 transitions. [2022-07-14 00:15:34,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-14 00:15:34,665 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:15:34,666 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:15:34,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-14 00:15:34,666 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:15:34,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:15:34,667 INFO L85 PathProgramCache]: Analyzing trace with hash -276957105, now seen corresponding path program 1 times [2022-07-14 00:15:34,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:15:34,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212309248] [2022-07-14 00:15:34,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:15:34,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:15:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:34,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:15:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:34,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:15:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:34,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:15:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:34,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:15:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:34,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-14 00:15:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:34,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:15:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:34,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 00:15:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:34,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:34,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:15:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:34,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:15:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:34,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:34,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:15:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:34,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-14 00:15:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:35,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-14 00:15:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:35,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:35,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-14 00:15:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:35,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-14 00:15:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:35,048 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-14 00:15:35,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:15:35,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212309248] [2022-07-14 00:15:35,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212309248] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:15:35,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827992677] [2022-07-14 00:15:35,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:15:35,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:15:35,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:15:35,051 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) [2022-07-14 00:15:35,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 00:15:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:35,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 00:15:35,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:15:35,654 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-14 00:15:35,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:15:36,114 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-14 00:15:36,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827992677] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-14 00:15:36,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-14 00:15:36,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 8] total 23 [2022-07-14 00:15:36,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050500682] [2022-07-14 00:15:36,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:15:36,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 00:15:36,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:15:36,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 00:15:36,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2022-07-14 00:15:36,116 INFO L87 Difference]: Start difference. First operand 3856 states and 5162 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2022-07-14 00:15:40,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:15:40,395 INFO L93 Difference]: Finished difference Result 8968 states and 12269 transitions. [2022-07-14 00:15:40,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-14 00:15:40,396 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) Word has length 161 [2022-07-14 00:15:40,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:15:40,487 INFO L225 Difference]: With dead ends: 8968 [2022-07-14 00:15:40,487 INFO L226 Difference]: Without dead ends: 6640 [2022-07-14 00:15:40,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 341 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2022-07-14 00:15:40,521 INFO L413 NwaCegarLoop]: 1709 mSDtfsCounter, 4314 mSDsluCounter, 2921 mSDsCounter, 0 mSdLazyCounter, 5284 mSolverCounterSat, 1873 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4446 SdHoareTripleChecker+Valid, 4630 SdHoareTripleChecker+Invalid, 7157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1873 IncrementalHoareTripleChecker+Valid, 5284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-14 00:15:40,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4446 Valid, 4630 Invalid, 7157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1873 Valid, 5284 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-14 00:15:40,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6640 states. [2022-07-14 00:15:40,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 5606. [2022-07-14 00:15:41,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5606 states, 4083 states have (on average 1.2885133480284106) internal successors, (5261), 4166 states have internal predecessors, (5261), 1100 states have call successors, (1100), 389 states have call predecessors, (1100), 422 states have return successors, (1192), 1105 states have call predecessors, (1192), 1099 states have call successors, (1192) [2022-07-14 00:15:41,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5606 states to 5606 states and 7553 transitions. [2022-07-14 00:15:41,051 INFO L78 Accepts]: Start accepts. Automaton has 5606 states and 7553 transitions. Word has length 161 [2022-07-14 00:15:41,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:15:41,054 INFO L495 AbstractCegarLoop]: Abstraction has 5606 states and 7553 transitions. [2022-07-14 00:15:41,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2022-07-14 00:15:41,055 INFO L276 IsEmpty]: Start isEmpty. Operand 5606 states and 7553 transitions. [2022-07-14 00:15:41,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-14 00:15:41,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:15:41,074 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 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] [2022-07-14 00:15:41,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-14 00:15:41,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:15:41,296 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:15:41,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:15:41,297 INFO L85 PathProgramCache]: Analyzing trace with hash -924833424, now seen corresponding path program 1 times [2022-07-14 00:15:41,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:15:41,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430062904] [2022-07-14 00:15:41,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:15:41,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:15:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:41,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:15:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:41,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:15:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:41,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:15:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:41,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:15:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:41,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-14 00:15:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:41,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:15:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:41,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 00:15:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:41,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:41,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:15:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:41,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:15:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:41,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:41,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:15:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:41,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-14 00:15:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:41,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-14 00:15:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:41,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:41,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-14 00:15:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:41,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-14 00:15:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:41,787 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-14 00:15:41,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:15:41,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430062904] [2022-07-14 00:15:41,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430062904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:15:41,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:15:41,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 00:15:41,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080594285] [2022-07-14 00:15:41,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:15:41,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 00:15:41,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:15:41,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 00:15:41,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-14 00:15:41,790 INFO L87 Difference]: Start difference. First operand 5606 states and 7553 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-14 00:15:46,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:15:46,243 INFO L93 Difference]: Finished difference Result 10773 states and 15104 transitions. [2022-07-14 00:15:46,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 00:15:46,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 163 [2022-07-14 00:15:46,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:15:46,273 INFO L225 Difference]: With dead ends: 10773 [2022-07-14 00:15:46,273 INFO L226 Difference]: Without dead ends: 6695 [2022-07-14 00:15:46,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-07-14 00:15:46,287 INFO L413 NwaCegarLoop]: 1077 mSDtfsCounter, 506 mSDsluCounter, 2134 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 3211 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-14 00:15:46,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 3211 Invalid, 3033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 2747 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-14 00:15:46,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6695 states. [2022-07-14 00:15:46,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6695 to 5604. [2022-07-14 00:15:46,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5604 states, 4081 states have (on average 1.287674589561382) internal successors, (5255), 4164 states have internal predecessors, (5255), 1100 states have call successors, (1100), 389 states have call predecessors, (1100), 422 states have return successors, (1192), 1105 states have call predecessors, (1192), 1099 states have call successors, (1192) [2022-07-14 00:15:46,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5604 states to 5604 states and 7547 transitions. [2022-07-14 00:15:46,848 INFO L78 Accepts]: Start accepts. Automaton has 5604 states and 7547 transitions. Word has length 163 [2022-07-14 00:15:46,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:15:46,849 INFO L495 AbstractCegarLoop]: Abstraction has 5604 states and 7547 transitions. [2022-07-14 00:15:46,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-14 00:15:46,849 INFO L276 IsEmpty]: Start isEmpty. Operand 5604 states and 7547 transitions. [2022-07-14 00:15:46,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-14 00:15:46,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:15:46,866 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:15:46,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-14 00:15:46,866 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:15:46,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:15:46,866 INFO L85 PathProgramCache]: Analyzing trace with hash -249324809, now seen corresponding path program 1 times [2022-07-14 00:15:46,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:15:46,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016829739] [2022-07-14 00:15:46,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:15:46,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:15:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:46,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:15:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:46,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:15:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:46,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:15:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:46,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:15:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:47,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-14 00:15:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:47,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:15:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:47,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 00:15:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:47,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:47,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:15:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:47,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:15:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:47,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:47,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:15:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:47,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-14 00:15:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:47,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-14 00:15:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:47,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:47,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-14 00:15:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:47,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-14 00:15:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:47,136 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-14 00:15:47,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:15:47,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016829739] [2022-07-14 00:15:47,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016829739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:15:47,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:15:47,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 00:15:47,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304431637] [2022-07-14 00:15:47,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:15:47,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 00:15:47,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:15:47,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 00:15:47,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-14 00:15:47,139 INFO L87 Difference]: Start difference. First operand 5604 states and 7547 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-14 00:15:51,008 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 [] [2022-07-14 00:15:52,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:15:52,054 INFO L93 Difference]: Finished difference Result 12287 states and 17119 transitions. [2022-07-14 00:15:52,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 00:15:52,054 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 165 [2022-07-14 00:15:52,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:15:52,080 INFO L225 Difference]: With dead ends: 12287 [2022-07-14 00:15:52,081 INFO L226 Difference]: Without dead ends: 6735 [2022-07-14 00:15:52,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-14 00:15:52,099 INFO L413 NwaCegarLoop]: 1084 mSDtfsCounter, 1111 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 828 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 3210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 828 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-14 00:15:52,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 2987 Invalid, 3210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [828 Valid, 2381 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-07-14 00:15:52,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6735 states. [2022-07-14 00:15:52,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6735 to 5616. [2022-07-14 00:15:52,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5616 states, 4093 states have (on average 1.2868311751771317) internal successors, (5267), 4176 states have internal predecessors, (5267), 1100 states have call successors, (1100), 389 states have call predecessors, (1100), 422 states have return successors, (1192), 1105 states have call predecessors, (1192), 1099 states have call successors, (1192) [2022-07-14 00:15:52,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5616 states to 5616 states and 7559 transitions. [2022-07-14 00:15:52,350 INFO L78 Accepts]: Start accepts. Automaton has 5616 states and 7559 transitions. Word has length 165 [2022-07-14 00:15:52,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:15:52,351 INFO L495 AbstractCegarLoop]: Abstraction has 5616 states and 7559 transitions. [2022-07-14 00:15:52,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-14 00:15:52,351 INFO L276 IsEmpty]: Start isEmpty. Operand 5616 states and 7559 transitions. [2022-07-14 00:15:52,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-14 00:15:52,361 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:15:52,362 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:15:52,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-14 00:15:52,362 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:15:52,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:15:52,363 INFO L85 PathProgramCache]: Analyzing trace with hash -352747458, now seen corresponding path program 1 times [2022-07-14 00:15:52,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:15:52,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468988042] [2022-07-14 00:15:52,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:15:52,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:15:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:52,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:15:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:52,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:15:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:52,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:15:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:52,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:15:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:52,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-14 00:15:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:52,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:15:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:52,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:15:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:52,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:52,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:15:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:52,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:15:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:52,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:52,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:15:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:52,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-14 00:15:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:52,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-14 00:15:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:52,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:52,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-14 00:15:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:52,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-14 00:15:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-14 00:15:52,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:15:52,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468988042] [2022-07-14 00:15:52,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468988042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:15:52,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:15:52,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 00:15:52,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726496844] [2022-07-14 00:15:52,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:15:52,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 00:15:52,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:15:52,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 00:15:52,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:15:52,693 INFO L87 Difference]: Start difference. First operand 5616 states and 7559 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-14 00:15:55,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:15:56,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:15:57,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:15:57,471 INFO L93 Difference]: Finished difference Result 12487 states and 17445 transitions. [2022-07-14 00:15:57,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 00:15:57,472 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 166 [2022-07-14 00:15:57,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:15:57,509 INFO L225 Difference]: With dead ends: 12487 [2022-07-14 00:15:57,509 INFO L226 Difference]: Without dead ends: 6923 [2022-07-14 00:15:57,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-07-14 00:15:57,526 INFO L413 NwaCegarLoop]: 1089 mSDtfsCounter, 819 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-14 00:15:57,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 2380 Invalid, 2217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-14 00:15:57,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6923 states. [2022-07-14 00:15:57,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6923 to 5664. [2022-07-14 00:15:57,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5664 states, 4141 states have (on average 1.2835063994204299) internal successors, (5315), 4224 states have internal predecessors, (5315), 1100 states have call successors, (1100), 389 states have call predecessors, (1100), 422 states have return successors, (1192), 1105 states have call predecessors, (1192), 1099 states have call successors, (1192) [2022-07-14 00:15:57,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5664 states to 5664 states and 7607 transitions. [2022-07-14 00:15:57,858 INFO L78 Accepts]: Start accepts. Automaton has 5664 states and 7607 transitions. Word has length 166 [2022-07-14 00:15:57,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:15:57,858 INFO L495 AbstractCegarLoop]: Abstraction has 5664 states and 7607 transitions. [2022-07-14 00:15:57,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-14 00:15:57,858 INFO L276 IsEmpty]: Start isEmpty. Operand 5664 states and 7607 transitions. [2022-07-14 00:15:57,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-14 00:15:57,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:15:57,865 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:15:57,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-14 00:15:57,866 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:15:57,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:15:57,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1090966733, now seen corresponding path program 1 times [2022-07-14 00:15:57,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:15:57,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920988546] [2022-07-14 00:15:57,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:15:57,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:15:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:57,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:15:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:57,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:15:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:57,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:15:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:57,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:15:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:57,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-14 00:15:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:57,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:15:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:58,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 00:15:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:58,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:58,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:15:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:58,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:15:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:58,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:58,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:15:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:58,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-14 00:15:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:58,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-14 00:15:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:58,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:15:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:58,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-14 00:15:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:58,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-14 00:15:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:15:58,061 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-14 00:15:58,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:15:58,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920988546] [2022-07-14 00:15:58,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920988546] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:15:58,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:15:58,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 00:15:58,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306162039] [2022-07-14 00:15:58,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:15:58,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 00:15:58,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:15:58,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 00:15:58,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:15:58,064 INFO L87 Difference]: Start difference. First operand 5664 states and 7607 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-14 00:16:01,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:16:03,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:16:03,228 INFO L93 Difference]: Finished difference Result 12523 states and 17417 transitions. [2022-07-14 00:16:03,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 00:16:03,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 169 [2022-07-14 00:16:03,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:16:03,256 INFO L225 Difference]: With dead ends: 12523 [2022-07-14 00:16:03,257 INFO L226 Difference]: Without dead ends: 6911 [2022-07-14 00:16:03,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-07-14 00:16:03,272 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 767 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-14 00:16:03,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 2653 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [557 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-14 00:16:03,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6911 states. [2022-07-14 00:16:03,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6911 to 5676. [2022-07-14 00:16:03,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5676 states, 4153 states have (on average 1.2826872140621237) internal successors, (5327), 4236 states have internal predecessors, (5327), 1100 states have call successors, (1100), 389 states have call predecessors, (1100), 422 states have return successors, (1192), 1105 states have call predecessors, (1192), 1099 states have call successors, (1192) [2022-07-14 00:16:03,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 7619 transitions. [2022-07-14 00:16:03,538 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 7619 transitions. Word has length 169 [2022-07-14 00:16:03,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:16:03,539 INFO L495 AbstractCegarLoop]: Abstraction has 5676 states and 7619 transitions. [2022-07-14 00:16:03,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-14 00:16:03,539 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 7619 transitions. [2022-07-14 00:16:03,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-14 00:16:03,546 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:16:03,546 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:16:03,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-14 00:16:03,547 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:16:03,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:16:03,547 INFO L85 PathProgramCache]: Analyzing trace with hash 640861731, now seen corresponding path program 1 times [2022-07-14 00:16:03,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:16:03,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162049784] [2022-07-14 00:16:03,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:03,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:16:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:04,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:16:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:04,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:16:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:04,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:16:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:04,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:16:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:04,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-14 00:16:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:04,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:16:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:04,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:16:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:04,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:05,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:16:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:05,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:16:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:05,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:05,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:16:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:05,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-14 00:16:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:05,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 00:16:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:05,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:05,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-14 00:16:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:05,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-14 00:16:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 20 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-14 00:16:05,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:16:05,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162049784] [2022-07-14 00:16:05,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162049784] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:16:05,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716627802] [2022-07-14 00:16:05,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:05,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:16:05,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:16:05,480 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) [2022-07-14 00:16:05,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-14 00:16:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:05,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 1434 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-14 00:16:05,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:16:06,249 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-14 00:16:06,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:16:06,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716627802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:16:06,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:16:06,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [39] total 49 [2022-07-14 00:16:06,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123084902] [2022-07-14 00:16:06,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:16:06,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-14 00:16:06,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:16:06,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-14 00:16:06,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=2230, Unknown=0, NotChecked=0, Total=2352 [2022-07-14 00:16:06,252 INFO L87 Difference]: Start difference. First operand 5676 states and 7619 transitions. Second operand has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 11 states have internal predecessors, (124), 4 states have call successors, (18), 2 states have call predecessors, (18), 6 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-14 00:16:06,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:16:06,803 INFO L93 Difference]: Finished difference Result 12382 states and 16770 transitions. [2022-07-14 00:16:06,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-14 00:16:06,803 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 11 states have internal predecessors, (124), 4 states have call successors, (18), 2 states have call predecessors, (18), 6 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 172 [2022-07-14 00:16:06,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:16:06,827 INFO L225 Difference]: With dead ends: 12382 [2022-07-14 00:16:06,827 INFO L226 Difference]: Without dead ends: 6758 [2022-07-14 00:16:06,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=150, Invalid=2712, Unknown=0, NotChecked=0, Total=2862 [2022-07-14 00:16:06,937 INFO L413 NwaCegarLoop]: 1279 mSDtfsCounter, 270 mSDsluCounter, 14799 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 16078 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 00:16:06,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 16078 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 00:16:06,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6758 states. [2022-07-14 00:16:07,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6758 to 5676. [2022-07-14 00:16:07,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5676 states, 4153 states have (on average 1.2778714182518662) internal successors, (5307), 4236 states have internal predecessors, (5307), 1100 states have call successors, (1100), 389 states have call predecessors, (1100), 422 states have return successors, (1192), 1105 states have call predecessors, (1192), 1099 states have call successors, (1192) [2022-07-14 00:16:07,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 7599 transitions. [2022-07-14 00:16:07,184 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 7599 transitions. Word has length 172 [2022-07-14 00:16:07,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:16:07,184 INFO L495 AbstractCegarLoop]: Abstraction has 5676 states and 7599 transitions. [2022-07-14 00:16:07,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 11 states have internal predecessors, (124), 4 states have call successors, (18), 2 states have call predecessors, (18), 6 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-14 00:16:07,185 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 7599 transitions. [2022-07-14 00:16:07,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-14 00:16:07,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:16:07,192 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:16:07,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-14 00:16:07,409 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,SelfDestructingSolverStorable12 [2022-07-14 00:16:07,409 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:16:07,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:16:07,410 INFO L85 PathProgramCache]: Analyzing trace with hash 159781473, now seen corresponding path program 1 times [2022-07-14 00:16:07,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:16:07,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458233743] [2022-07-14 00:16:07,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:07,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:16:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:07,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:16:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:07,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:16:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:07,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:16:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:07,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:16:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:07,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-14 00:16:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:08,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:16:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:08,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:16:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:08,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:08,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:16:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:08,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:16:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:08,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:08,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:16:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:08,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-14 00:16:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:09,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 00:16:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:09,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:16:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:09,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-14 00:16:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:09,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-14 00:16:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:09,369 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 20 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-14 00:16:09,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:16:09,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458233743] [2022-07-14 00:16:09,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458233743] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:16:09,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338417150] [2022-07-14 00:16:09,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:16:09,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:16:09,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:16:09,372 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) [2022-07-14 00:16:09,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-14 00:16:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:16:09,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 52 conjunts are in the unsatisfiable core [2022-07-14 00:16:09,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:16:10,274 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-14 00:16:10,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:16:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-14 00:16:11,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338417150] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:16:11,253 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 00:16:11,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 14, 12] total 51 [2022-07-14 00:16:11,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227126598] [2022-07-14 00:16:11,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 00:16:11,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-07-14 00:16:11,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:16:11,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-07-14 00:16:11,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=2417, Unknown=0, NotChecked=0, Total=2550 [2022-07-14 00:16:11,259 INFO L87 Difference]: Start difference. First operand 5676 states and 7599 transitions. Second operand has 51 states, 46 states have (on average 5.217391304347826) internal successors, (240), 39 states have internal predecessors, (240), 13 states have call successors, (37), 6 states have call predecessors, (37), 12 states have return successors, (37), 16 states have call predecessors, (37), 13 states have call successors, (37) [2022-07-14 00:16:41,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:16:44,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:17:00,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:00,186 INFO L93 Difference]: Finished difference Result 16124 states and 22700 transitions. [2022-07-14 00:17:00,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-07-14 00:17:00,186 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 46 states have (on average 5.217391304347826) internal successors, (240), 39 states have internal predecessors, (240), 13 states have call successors, (37), 6 states have call predecessors, (37), 12 states have return successors, (37), 16 states have call predecessors, (37), 13 states have call successors, (37) Word has length 172 [2022-07-14 00:17:00,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:00,224 INFO L225 Difference]: With dead ends: 16124 [2022-07-14 00:17:00,225 INFO L226 Difference]: Without dead ends: 10477 [2022-07-14 00:17:00,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 383 SyntacticMatches, 3 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4631 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1204, Invalid=16886, Unknown=0, NotChecked=0, Total=18090 [2022-07-14 00:17:00,245 INFO L413 NwaCegarLoop]: 1356 mSDtfsCounter, 5269 mSDsluCounter, 23308 mSDsCounter, 0 mSdLazyCounter, 47096 mSolverCounterSat, 2756 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5370 SdHoareTripleChecker+Valid, 24664 SdHoareTripleChecker+Invalid, 49853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2756 IncrementalHoareTripleChecker+Valid, 47096 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.6s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:00,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5370 Valid, 24664 Invalid, 49853 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2756 Valid, 47096 Invalid, 1 Unknown, 0 Unchecked, 41.6s Time] [2022-07-14 00:17:00,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10477 states. [2022-07-14 00:17:00,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10477 to 6673. [2022-07-14 00:17:00,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6673 states, 4894 states have (on average 1.2725786677564364) internal successors, (6228), 5001 states have internal predecessors, (6228), 1267 states have call successors, (1267), 460 states have call predecessors, (1267), 511 states have return successors, (1475), 1270 states have call predecessors, (1475), 1266 states have call successors, (1475) [2022-07-14 00:17:00,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6673 states to 6673 states and 8970 transitions. [2022-07-14 00:17:00,701 INFO L78 Accepts]: Start accepts. Automaton has 6673 states and 8970 transitions. Word has length 172 [2022-07-14 00:17:00,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:00,701 INFO L495 AbstractCegarLoop]: Abstraction has 6673 states and 8970 transitions. [2022-07-14 00:17:00,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 46 states have (on average 5.217391304347826) internal successors, (240), 39 states have internal predecessors, (240), 13 states have call successors, (37), 6 states have call predecessors, (37), 12 states have return successors, (37), 16 states have call predecessors, (37), 13 states have call successors, (37) [2022-07-14 00:17:00,701 INFO L276 IsEmpty]: Start isEmpty. Operand 6673 states and 8970 transitions. [2022-07-14 00:17:00,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-14 00:17:00,713 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:00,713 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 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] [2022-07-14 00:17:00,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-14 00:17:00,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:17:00,928 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:00,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:00,928 INFO L85 PathProgramCache]: Analyzing trace with hash -61046879, now seen corresponding path program 1 times [2022-07-14 00:17:00,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:00,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831356256] [2022-07-14 00:17:00,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:00,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:17:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:17:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:17:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-14 00:17:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 00:17:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-14 00:17:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-14 00:17:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:17:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:17:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-14 00:17:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-14 00:17:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-14 00:17:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-14 00:17:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-14 00:17:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:01,323 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-14 00:17:01,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:01,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831356256] [2022-07-14 00:17:01,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831356256] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:01,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:01,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 00:17:01,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523120325] [2022-07-14 00:17:01,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:01,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 00:17:01,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:17:01,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 00:17:01,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-14 00:17:01,326 INFO L87 Difference]: Start difference. First operand 6673 states and 8970 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-14 00:17:05,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:05,793 INFO L93 Difference]: Finished difference Result 13433 states and 18498 transitions. [2022-07-14 00:17:05,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 00:17:05,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 208 [2022-07-14 00:17:05,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:05,817 INFO L225 Difference]: With dead ends: 13433 [2022-07-14 00:17:05,817 INFO L226 Difference]: Without dead ends: 7692 [2022-07-14 00:17:05,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-14 00:17:05,831 INFO L413 NwaCegarLoop]: 1060 mSDtfsCounter, 842 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 3546 SdHoareTripleChecker+Invalid, 2928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:05,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 3546 Invalid, 2928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 2335 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-14 00:17:05,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7692 states. [2022-07-14 00:17:06,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7692 to 6709. [2022-07-14 00:17:06,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6709 states, 4921 states have (on average 1.2735216419426947) internal successors, (6267), 5028 states have internal predecessors, (6267), 1273 states have call successors, (1273), 463 states have call predecessors, (1273), 514 states have return successors, (1481), 1276 states have call predecessors, (1481), 1272 states have call successors, (1481) [2022-07-14 00:17:06,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6709 states to 6709 states and 9021 transitions. [2022-07-14 00:17:06,327 INFO L78 Accepts]: Start accepts. Automaton has 6709 states and 9021 transitions. Word has length 208 [2022-07-14 00:17:06,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:06,328 INFO L495 AbstractCegarLoop]: Abstraction has 6709 states and 9021 transitions. [2022-07-14 00:17:06,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-14 00:17:06,328 INFO L276 IsEmpty]: Start isEmpty. Operand 6709 states and 9021 transitions. [2022-07-14 00:17:06,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-14 00:17:06,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:06,356 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 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] [2022-07-14 00:17:06,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-14 00:17:06,356 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:06,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:06,357 INFO L85 PathProgramCache]: Analyzing trace with hash -217027421, now seen corresponding path program 1 times [2022-07-14 00:17:06,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:06,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723253849] [2022-07-14 00:17:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:06,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:17:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:17:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:17:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-14 00:17:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 00:17:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-14 00:17:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-14 00:17:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:17:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:17:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-14 00:17:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-14 00:17:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-14 00:17:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-14 00:17:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-14 00:17:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:06,639 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-14 00:17:06,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:06,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723253849] [2022-07-14 00:17:06,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723253849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:06,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:06,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 00:17:06,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818701357] [2022-07-14 00:17:06,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:06,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 00:17:06,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:17:06,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 00:17:06,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-14 00:17:06,642 INFO L87 Difference]: Start difference. First operand 6709 states and 9021 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-14 00:17:10,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:10,219 INFO L93 Difference]: Finished difference Result 14374 states and 20294 transitions. [2022-07-14 00:17:10,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 00:17:10,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 208 [2022-07-14 00:17:10,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:10,250 INFO L225 Difference]: With dead ends: 14374 [2022-07-14 00:17:10,250 INFO L226 Difference]: Without dead ends: 7712 [2022-07-14 00:17:10,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-14 00:17:10,268 INFO L413 NwaCegarLoop]: 1047 mSDtfsCounter, 1137 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 3514 SdHoareTripleChecker+Invalid, 3268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:10,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 3514 Invalid, 3268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-14 00:17:10,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7712 states. [2022-07-14 00:17:10,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7712 to 6715. [2022-07-14 00:17:10,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6715 states, 4924 states have (on average 1.2729488220958571) internal successors, (6268), 5037 states have internal predecessors, (6268), 1270 states have call successors, (1270), 463 states have call predecessors, (1270), 520 states have return successors, (1508), 1273 states have call predecessors, (1508), 1269 states have call successors, (1508) [2022-07-14 00:17:10,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6715 states to 6715 states and 9046 transitions. [2022-07-14 00:17:10,713 INFO L78 Accepts]: Start accepts. Automaton has 6715 states and 9046 transitions. Word has length 208 [2022-07-14 00:17:10,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:10,715 INFO L495 AbstractCegarLoop]: Abstraction has 6715 states and 9046 transitions. [2022-07-14 00:17:10,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-14 00:17:10,715 INFO L276 IsEmpty]: Start isEmpty. Operand 6715 states and 9046 transitions. [2022-07-14 00:17:10,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-14 00:17:10,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:10,729 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-14 00:17:10,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-14 00:17:10,730 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:10,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:10,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1327140870, now seen corresponding path program 1 times [2022-07-14 00:17:10,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:10,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009344186] [2022-07-14 00:17:10,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:10,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:17:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:17:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:17:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-14 00:17:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 00:17:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-14 00:17:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-14 00:17:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:11,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:11,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:11,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:17:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:11,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:11,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:17:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:11,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-14 00:17:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:11,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-14 00:17:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:11,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:11,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-14 00:17:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:11,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-14 00:17:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:11,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-14 00:17:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:11,219 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-14 00:17:11,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:11,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009344186] [2022-07-14 00:17:11,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009344186] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:17:11,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041315202] [2022-07-14 00:17:11,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:11,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:17:11,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:17:11,236 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) [2022-07-14 00:17:11,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-14 00:17:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:11,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 52 conjunts are in the unsatisfiable core [2022-07-14 00:17:11,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:17:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-14 00:17:11,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:17:12,317 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-14 00:17:12,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041315202] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:17:12,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 00:17:12,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 12] total 27 [2022-07-14 00:17:12,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966487828] [2022-07-14 00:17:12,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 00:17:12,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-14 00:17:12,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:17:12,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-14 00:17:12,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2022-07-14 00:17:12,321 INFO L87 Difference]: Start difference. First operand 6715 states and 9046 transitions. Second operand has 27 states, 26 states have (on average 6.115384615384615) internal successors, (159), 17 states have internal predecessors, (159), 5 states have call successors, (43), 6 states have call predecessors, (43), 7 states have return successors, (34), 8 states have call predecessors, (34), 5 states have call successors, (34) [2022-07-14 00:17:20,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:20,981 INFO L93 Difference]: Finished difference Result 13559 states and 18787 transitions. [2022-07-14 00:17:20,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-14 00:17:20,982 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 6.115384615384615) internal successors, (159), 17 states have internal predecessors, (159), 5 states have call successors, (43), 6 states have call predecessors, (43), 7 states have return successors, (34), 8 states have call predecessors, (34), 5 states have call successors, (34) Word has length 208 [2022-07-14 00:17:20,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:21,034 INFO L225 Difference]: With dead ends: 13559 [2022-07-14 00:17:21,035 INFO L226 Difference]: Without dead ends: 7772 [2022-07-14 00:17:21,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 449 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2022-07-14 00:17:21,051 INFO L413 NwaCegarLoop]: 1085 mSDtfsCounter, 1149 mSDsluCounter, 12899 mSDsCounter, 0 mSdLazyCounter, 12543 mSolverCounterSat, 838 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 13984 SdHoareTripleChecker+Invalid, 13381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 838 IncrementalHoareTripleChecker+Valid, 12543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:21,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 13984 Invalid, 13381 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [838 Valid, 12543 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-07-14 00:17:21,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7772 states. [2022-07-14 00:17:21,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7772 to 6724. [2022-07-14 00:17:21,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6724 states, 4933 states have (on average 1.272450841273059) internal successors, (6277), 5043 states have internal predecessors, (6277), 1270 states have call successors, (1270), 463 states have call predecessors, (1270), 520 states have return successors, (1508), 1276 states have call predecessors, (1508), 1269 states have call successors, (1508) [2022-07-14 00:17:21,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6724 states to 6724 states and 9055 transitions. [2022-07-14 00:17:21,678 INFO L78 Accepts]: Start accepts. Automaton has 6724 states and 9055 transitions. Word has length 208 [2022-07-14 00:17:21,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:21,693 INFO L495 AbstractCegarLoop]: Abstraction has 6724 states and 9055 transitions. [2022-07-14 00:17:21,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 6.115384615384615) internal successors, (159), 17 states have internal predecessors, (159), 5 states have call successors, (43), 6 states have call predecessors, (43), 7 states have return successors, (34), 8 states have call predecessors, (34), 5 states have call successors, (34) [2022-07-14 00:17:21,694 INFO L276 IsEmpty]: Start isEmpty. Operand 6724 states and 9055 transitions. [2022-07-14 00:17:21,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-14 00:17:21,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:21,720 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 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] [2022-07-14 00:17:21,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-14 00:17:21,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-14 00:17:21,940 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:21,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:21,940 INFO L85 PathProgramCache]: Analyzing trace with hash -66006893, now seen corresponding path program 1 times [2022-07-14 00:17:21,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:21,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675697420] [2022-07-14 00:17:21,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:21,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:17:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:17:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:17:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 00:17:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:17:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:17:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:17:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-14 00:17:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-14 00:17:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-14 00:17:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-14 00:17:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-14 00:17:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-14 00:17:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-14 00:17:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-14 00:17:22,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:22,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675697420] [2022-07-14 00:17:22,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675697420] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:22,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:22,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-14 00:17:22,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176438874] [2022-07-14 00:17:22,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:22,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-14 00:17:22,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:17:22,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-14 00:17:22,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-14 00:17:22,335 INFO L87 Difference]: Start difference. First operand 6724 states and 9055 transitions. Second operand has 10 states, 10 states have (on average 14.2) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (21), 9 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-14 00:17:28,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:28,786 INFO L93 Difference]: Finished difference Result 15147 states and 21288 transitions. [2022-07-14 00:17:28,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-14 00:17:28,787 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (21), 9 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 199 [2022-07-14 00:17:28,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:28,821 INFO L225 Difference]: With dead ends: 15147 [2022-07-14 00:17:28,821 INFO L226 Difference]: Without dead ends: 9351 [2022-07-14 00:17:28,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2022-07-14 00:17:28,837 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 3076 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 3321 mSolverCounterSat, 2447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3306 SdHoareTripleChecker+Valid, 3349 SdHoareTripleChecker+Invalid, 5768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2447 IncrementalHoareTripleChecker+Valid, 3321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:28,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3306 Valid, 3349 Invalid, 5768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2447 Valid, 3321 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-07-14 00:17:28,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9351 states. [2022-07-14 00:17:29,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9351 to 6679. [2022-07-14 00:17:29,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6679 states, 4900 states have (on average 1.2610204081632652) internal successors, (6179), 5009 states have internal predecessors, (6179), 1263 states have call successors, (1263), 458 states have call predecessors, (1263), 515 states have return successors, (1501), 1270 states have call predecessors, (1501), 1262 states have call successors, (1501) [2022-07-14 00:17:29,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6679 states to 6679 states and 8943 transitions. [2022-07-14 00:17:29,329 INFO L78 Accepts]: Start accepts. Automaton has 6679 states and 8943 transitions. Word has length 199 [2022-07-14 00:17:29,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:29,329 INFO L495 AbstractCegarLoop]: Abstraction has 6679 states and 8943 transitions. [2022-07-14 00:17:29,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (21), 9 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-14 00:17:29,329 INFO L276 IsEmpty]: Start isEmpty. Operand 6679 states and 8943 transitions. [2022-07-14 00:17:29,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-14 00:17:29,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:29,337 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:17:29,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-14 00:17:29,337 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:29,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:29,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1706002734, now seen corresponding path program 1 times [2022-07-14 00:17:29,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:29,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334647602] [2022-07-14 00:17:29,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:29,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:29,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:29,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:17:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:29,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:17:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:29,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:17:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:29,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-14 00:17:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:29,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:29,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:17:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:29,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:29,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:29,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:17:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:29,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:29,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:17:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:29,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-14 00:17:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:29,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-14 00:17:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:29,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-14 00:17:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:29,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-14 00:17:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:29,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-14 00:17:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:29,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:29,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-14 00:17:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:29,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-14 00:17:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:29,628 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-14 00:17:29,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:29,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334647602] [2022-07-14 00:17:29,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334647602] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:29,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:29,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-14 00:17:29,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326659399] [2022-07-14 00:17:29,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:29,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 00:17:29,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:17:29,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 00:17:29,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-14 00:17:29,630 INFO L87 Difference]: Start difference. First operand 6679 states and 8943 transitions. Second operand has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (21), 9 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-14 00:17:34,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:17:36,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:36,181 INFO L93 Difference]: Finished difference Result 15069 states and 21107 transitions. [2022-07-14 00:17:36,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 00:17:36,181 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (21), 9 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 190 [2022-07-14 00:17:36,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:36,214 INFO L225 Difference]: With dead ends: 15069 [2022-07-14 00:17:36,214 INFO L226 Difference]: Without dead ends: 9302 [2022-07-14 00:17:36,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-07-14 00:17:36,232 INFO L413 NwaCegarLoop]: 1033 mSDtfsCounter, 907 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 3593 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 3215 SdHoareTripleChecker+Invalid, 4065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 3593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:36,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 3215 Invalid, 4065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 3593 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-07-14 00:17:36,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9302 states. [2022-07-14 00:17:36,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9302 to 6687. [2022-07-14 00:17:36,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6687 states, 4908 states have (on average 1.2605949470252649) internal successors, (6187), 5017 states have internal predecessors, (6187), 1263 states have call successors, (1263), 458 states have call predecessors, (1263), 515 states have return successors, (1501), 1270 states have call predecessors, (1501), 1262 states have call successors, (1501) [2022-07-14 00:17:36,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6687 states to 6687 states and 8951 transitions. [2022-07-14 00:17:36,837 INFO L78 Accepts]: Start accepts. Automaton has 6687 states and 8951 transitions. Word has length 190 [2022-07-14 00:17:36,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:36,837 INFO L495 AbstractCegarLoop]: Abstraction has 6687 states and 8951 transitions. [2022-07-14 00:17:36,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (21), 9 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-14 00:17:36,838 INFO L276 IsEmpty]: Start isEmpty. Operand 6687 states and 8951 transitions. [2022-07-14 00:17:36,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-14 00:17:36,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:36,845 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:17:36,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-14 00:17:36,846 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:36,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:36,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1553975106, now seen corresponding path program 1 times [2022-07-14 00:17:36,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:36,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695350762] [2022-07-14 00:17:36,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:36,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:36,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:36,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:17:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:36,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:17:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:36,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:17:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:36,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:36,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:17:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:36,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:36,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:17:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:37,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-14 00:17:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:37,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:37,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:17:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:37,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:37,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:37,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:17:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:37,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:37,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:17:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:37,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-14 00:17:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:37,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-14 00:17:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:37,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-14 00:17:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:37,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-14 00:17:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:37,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-14 00:17:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:37,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:37,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-14 00:17:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:37,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-14 00:17:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:37,228 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-14 00:17:37,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:37,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695350762] [2022-07-14 00:17:37,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695350762] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:17:37,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180740551] [2022-07-14 00:17:37,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:37,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:17:37,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:17:37,230 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) [2022-07-14 00:17:37,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-14 00:17:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:37,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 1621 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 00:17:37,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:17:37,940 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-14 00:17:37,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:17:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-14 00:17:38,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180740551] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:17:38,114 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 00:17:38,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 17 [2022-07-14 00:17:38,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554963160] [2022-07-14 00:17:38,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 00:17:38,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-14 00:17:38,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:17:38,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-14 00:17:38,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-07-14 00:17:38,116 INFO L87 Difference]: Start difference. First operand 6687 states and 8951 transitions. Second operand has 17 states, 17 states have (on average 9.823529411764707) internal successors, (167), 10 states have internal predecessors, (167), 2 states have call successors, (39), 9 states have call predecessors, (39), 5 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-14 00:17:45,511 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:17:48,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:48,514 INFO L93 Difference]: Finished difference Result 15117 states and 21203 transitions. [2022-07-14 00:17:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-14 00:17:48,514 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.823529411764707) internal successors, (167), 10 states have internal predecessors, (167), 2 states have call successors, (39), 9 states have call predecessors, (39), 5 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 212 [2022-07-14 00:17:48,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:48,567 INFO L225 Difference]: With dead ends: 15117 [2022-07-14 00:17:48,568 INFO L226 Difference]: Without dead ends: 9326 [2022-07-14 00:17:48,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 462 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2022-07-14 00:17:48,586 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 1444 mSDsluCounter, 3809 mSDsCounter, 0 mSdLazyCounter, 6405 mSolverCounterSat, 1044 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 4838 SdHoareTripleChecker+Invalid, 7450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1044 IncrementalHoareTripleChecker+Valid, 6405 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:48,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1590 Valid, 4838 Invalid, 7450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1044 Valid, 6405 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2022-07-14 00:17:48,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9326 states. [2022-07-14 00:17:49,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9326 to 6711. [2022-07-14 00:17:49,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6711 states, 4932 states have (on average 1.2593268450932684) internal successors, (6211), 5041 states have internal predecessors, (6211), 1263 states have call successors, (1263), 458 states have call predecessors, (1263), 515 states have return successors, (1501), 1270 states have call predecessors, (1501), 1262 states have call successors, (1501) [2022-07-14 00:17:49,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6711 states to 6711 states and 8975 transitions. [2022-07-14 00:17:49,171 INFO L78 Accepts]: Start accepts. Automaton has 6711 states and 8975 transitions. Word has length 212 [2022-07-14 00:17:49,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:49,171 INFO L495 AbstractCegarLoop]: Abstraction has 6711 states and 8975 transitions. [2022-07-14 00:17:49,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.823529411764707) internal successors, (167), 10 states have internal predecessors, (167), 2 states have call successors, (39), 9 states have call predecessors, (39), 5 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-14 00:17:49,171 INFO L276 IsEmpty]: Start isEmpty. Operand 6711 states and 8975 transitions. [2022-07-14 00:17:49,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-14 00:17:49,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:49,180 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:17:49,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-14 00:17:49,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:17:49,398 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:49,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:49,399 INFO L85 PathProgramCache]: Analyzing trace with hash 995669486, now seen corresponding path program 2 times [2022-07-14 00:17:49,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:49,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091865017] [2022-07-14 00:17:49,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:49,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:17:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:17:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:17:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-14 00:17:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:17:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:17:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:17:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-14 00:17:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-14 00:17:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-14 00:17:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-14 00:17:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-14 00:17:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-14 00:17:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-14 00:17:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-14 00:17:49,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:49,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091865017] [2022-07-14 00:17:49,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091865017] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:17:49,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004490994] [2022-07-14 00:17:49,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 00:17:49,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:17:49,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:17:49,898 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) [2022-07-14 00:17:49,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-14 00:17:50,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 00:17:50,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 00:17:50,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 1583 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 00:17:50,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:17:50,895 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-14 00:17:50,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:17:51,186 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-14 00:17:51,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004490994] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:17:51,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 00:17:51,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 26 [2022-07-14 00:17:51,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697518182] [2022-07-14 00:17:51,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 00:17:51,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-14 00:17:51,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:17:51,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-14 00:17:51,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-07-14 00:17:51,188 INFO L87 Difference]: Start difference. First operand 6711 states and 8975 transitions. Second operand has 26 states, 26 states have (on average 6.769230769230769) internal successors, (176), 19 states have internal predecessors, (176), 2 states have call successors, (39), 9 states have call predecessors, (39), 5 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-14 00:18:00,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:18:00,086 INFO L93 Difference]: Finished difference Result 15189 states and 21299 transitions. [2022-07-14 00:18:00,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-14 00:18:00,086 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.769230769230769) internal successors, (176), 19 states have internal predecessors, (176), 2 states have call successors, (39), 9 states have call predecessors, (39), 5 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 194 [2022-07-14 00:18:00,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:18:00,128 INFO L225 Difference]: With dead ends: 15189 [2022-07-14 00:18:00,129 INFO L226 Difference]: Without dead ends: 9374 [2022-07-14 00:18:00,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 412 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=331, Invalid=1391, Unknown=0, NotChecked=0, Total=1722 [2022-07-14 00:18:00,150 INFO L413 NwaCegarLoop]: 1024 mSDtfsCounter, 2287 mSDsluCounter, 3717 mSDsCounter, 0 mSdLazyCounter, 6263 mSolverCounterSat, 1704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2434 SdHoareTripleChecker+Valid, 4741 SdHoareTripleChecker+Invalid, 7967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1704 IncrementalHoareTripleChecker+Valid, 6263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-07-14 00:18:00,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2434 Valid, 4741 Invalid, 7967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1704 Valid, 6263 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-07-14 00:18:00,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9374 states. [2022-07-14 00:18:00,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9374 to 6759. [2022-07-14 00:18:00,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6759 states, 4980 states have (on average 1.2568273092369477) internal successors, (6259), 5089 states have internal predecessors, (6259), 1263 states have call successors, (1263), 458 states have call predecessors, (1263), 515 states have return successors, (1501), 1270 states have call predecessors, (1501), 1262 states have call successors, (1501) [2022-07-14 00:18:00,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6759 states to 6759 states and 9023 transitions. [2022-07-14 00:18:00,732 INFO L78 Accepts]: Start accepts. Automaton has 6759 states and 9023 transitions. Word has length 194 [2022-07-14 00:18:00,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:18:00,733 INFO L495 AbstractCegarLoop]: Abstraction has 6759 states and 9023 transitions. [2022-07-14 00:18:00,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.769230769230769) internal successors, (176), 19 states have internal predecessors, (176), 2 states have call successors, (39), 9 states have call predecessors, (39), 5 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-14 00:18:00,733 INFO L276 IsEmpty]: Start isEmpty. Operand 6759 states and 9023 transitions. [2022-07-14 00:18:00,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-14 00:18:00,741 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:18:00,741 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:18:00,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-14 00:18:00,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:18:00,964 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:18:00,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:18:00,964 INFO L85 PathProgramCache]: Analyzing trace with hash -883181267, now seen corresponding path program 3 times [2022-07-14 00:18:00,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:18:00,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114709895] [2022-07-14 00:18:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:18:00,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:18:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:18:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:18:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:18:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:18:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:18:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:18:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:18:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:18:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-14 00:18:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:18:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:18:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:18:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:18:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:18:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:18:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:18:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-14 00:18:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-14 00:18:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-14 00:18:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-14 00:18:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-14 00:18:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:18:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-14 00:18:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-14 00:18:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:18:01,630 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-14 00:18:01,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:18:01,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114709895] [2022-07-14 00:18:01,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114709895] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:18:01,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880070116] [2022-07-14 00:18:01,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 00:18:01,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:18:01,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:18:01,633 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) [2022-07-14 00:18:01,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-14 00:18:02,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-14 00:18:02,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 00:18:02,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-14 00:18:02,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:18:02,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-07-14 00:18:38,951 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-07-14 00:18:49,662 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 15 proven. 32 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-14 00:18:49,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:18:50,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880070116] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:18:50,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 00:18:50,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 36 [2022-07-14 00:18:50,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008837975] [2022-07-14 00:18:50,989 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 00:18:50,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-14 00:18:50,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:18:50,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-14 00:18:50,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1213, Unknown=11, NotChecked=0, Total=1332 [2022-07-14 00:18:50,991 INFO L87 Difference]: Start difference. First operand 6759 states and 9023 transitions. Second operand has 36 states, 36 states have (on average 6.055555555555555) internal successors, (218), 27 states have internal predecessors, (218), 8 states have call successors, (41), 11 states have call predecessors, (41), 6 states have return successors, (35), 8 states have call predecessors, (35), 8 states have call successors, (35)