./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.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 2eef4809e0fb5b801f2479dfde07a6f5e1ac3784201f878d167f0654e03bdeae --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 23:20:19,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 23:20:19,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 23:20:19,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 23:20:19,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 23:20:19,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 23:20:19,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 23:20:19,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 23:20:19,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 23:20:19,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 23:20:19,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 23:20:19,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 23:20:19,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 23:20:19,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 23:20:19,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 23:20:19,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 23:20:19,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 23:20:19,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 23:20:19,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 23:20:19,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 23:20:19,648 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 23:20:19,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 23:20:19,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 23:20:19,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 23:20:19,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 23:20:19,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 23:20:19,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 23:20:19,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 23:20:19,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 23:20:19,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 23:20:19,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 23:20:19,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 23:20:19,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 23:20:19,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 23:20:19,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 23:20:19,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 23:20:19,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 23:20:19,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 23:20:19,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 23:20:19,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 23:20:19,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 23:20:19,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 23:20:19,667 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 23:20:19,691 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 23:20:19,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 23:20:19,691 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 23:20:19,692 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 23:20:19,692 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 23:20:19,692 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 23:20:19,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 23:20:19,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 23:20:19,693 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 23:20:19,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 23:20:19,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 23:20:19,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 23:20:19,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 23:20:19,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 23:20:19,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 23:20:19,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 23:20:19,695 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 23:20:19,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 23:20:19,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 23:20:19,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 23:20:19,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 23:20:19,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:20:19,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 23:20:19,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 23:20:19,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 23:20:19,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 23:20:19,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 23:20:19,697 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 23:20:19,697 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 23:20:19,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 23:20:19,697 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2eef4809e0fb5b801f2479dfde07a6f5e1ac3784201f878d167f0654e03bdeae [2022-07-19 23:20:19,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 23:20:19,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 23:20:19,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 23:20:19,901 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 23:20:19,901 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 23:20:19,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2022-07-19 23:20:19,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a8466a4c/6eae0db22b0f442eba3a6a1b3397db7b/FLAG8ce7bd1a3 [2022-07-19 23:20:20,588 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 23:20:20,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2022-07-19 23:20:20,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a8466a4c/6eae0db22b0f442eba3a6a1b3397db7b/FLAG8ce7bd1a3 [2022-07-19 23:20:20,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a8466a4c/6eae0db22b0f442eba3a6a1b3397db7b [2022-07-19 23:20:20,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 23:20:20,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 23:20:20,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 23:20:20,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 23:20:20,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 23:20:20,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:20:20" (1/1) ... [2022-07-19 23:20:20,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e2b2b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:20, skipping insertion in model container [2022-07-19 23:20:20,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:20:20" (1/1) ... [2022-07-19 23:20:20,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 23:20:21,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:20:22,222 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-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i[269371,269384] [2022-07-19 23:20:22,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:20:22,338 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 23:20:22,621 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-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i[269371,269384] [2022-07-19 23:20:22,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:20:22,674 INFO L208 MainTranslator]: Completed translation [2022-07-19 23:20:22,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:22 WrapperNode [2022-07-19 23:20:22,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 23:20:22,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 23:20:22,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 23:20:22,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 23:20:22,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:22" (1/1) ... [2022-07-19 23:20:22,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:22" (1/1) ... [2022-07-19 23:20:22,961 INFO L137 Inliner]: procedures = 282, calls = 3066, calls flagged for inlining = 129, calls inlined = 120, statements flattened = 6882 [2022-07-19 23:20:22,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 23:20:22,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 23:20:22,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 23:20:22,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 23:20:22,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:22" (1/1) ... [2022-07-19 23:20:22,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:22" (1/1) ... [2022-07-19 23:20:23,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:22" (1/1) ... [2022-07-19 23:20:23,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:22" (1/1) ... [2022-07-19 23:20:23,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:22" (1/1) ... [2022-07-19 23:20:23,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:22" (1/1) ... [2022-07-19 23:20:23,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:22" (1/1) ... [2022-07-19 23:20:23,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 23:20:23,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 23:20:23,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 23:20:23,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 23:20:23,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:22" (1/1) ... [2022-07-19 23:20:23,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:20:23,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:20:23,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 23:20:23,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 23:20:23,374 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-07-19 23:20:23,375 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2022-07-19 23:20:23,375 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2022-07-19 23:20:23,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-19 23:20:23,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-19 23:20:23,375 INFO L130 BoogieDeclarations]: Found specification of procedure driver_remove_file [2022-07-19 23:20:23,375 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_remove_file [2022-07-19 23:20:23,375 INFO L130 BoogieDeclarations]: Found specification of procedure find_partition [2022-07-19 23:20:23,376 INFO L138 BoogieDeclarations]: Found implementation of procedure find_partition [2022-07-19 23:20:23,376 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-07-19 23:20:23,376 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-07-19 23:20:23,376 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2022-07-19 23:20:23,376 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2022-07-19 23:20:23,376 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-19 23:20:23,376 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-19 23:20:23,376 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-19 23:20:23,376 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-19 23:20:23,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-19 23:20:23,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-19 23:20:23,377 INFO L130 BoogieDeclarations]: Found specification of procedure class_unregister [2022-07-19 23:20:23,377 INFO L138 BoogieDeclarations]: Found implementation of procedure class_unregister [2022-07-19 23:20:23,377 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-19 23:20:23,377 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-19 23:20:23,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-19 23:20:23,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-19 23:20:23,377 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2022-07-19 23:20:23,378 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2022-07-19 23:20:23,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-07-19 23:20:23,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-07-19 23:20:23,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-19 23:20:23,378 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-19 23:20:23,378 INFO L130 BoogieDeclarations]: Found specification of procedure st_int_ioctl [2022-07-19 23:20:23,378 INFO L138 BoogieDeclarations]: Found implementation of procedure st_int_ioctl [2022-07-19 23:20:23,378 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_rq_timeout [2022-07-19 23:20:23,378 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_rq_timeout [2022-07-19 23:20:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure set_mode_densblk [2022-07-19 23:20:23,379 INFO L138 BoogieDeclarations]: Found implementation of procedure set_mode_densblk [2022-07-19 23:20:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-19 23:20:23,379 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-19 23:20:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_ioctl [2022-07-19 23:20:23,379 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_ioctl [2022-07-19 23:20:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 23:20:23,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_st_ref_mutex [2022-07-19 23:20:23,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_st_ref_mutex [2022-07-19 23:20:23,380 INFO L130 BoogieDeclarations]: Found specification of procedure read_mode_page [2022-07-19 23:20:23,380 INFO L138 BoogieDeclarations]: Found implementation of procedure read_mode_page [2022-07-19 23:20:23,380 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2022-07-19 23:20:23,380 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2022-07-19 23:20:23,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 23:20:23,381 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2022-07-19 23:20:23,381 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2022-07-19 23:20:23,381 INFO L130 BoogieDeclarations]: Found specification of procedure st_do_scsi [2022-07-19 23:20:23,381 INFO L138 BoogieDeclarations]: Found implementation of procedure st_do_scsi [2022-07-19 23:20:23,381 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-07-19 23:20:23,381 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-07-19 23:20:23,382 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-07-19 23:20:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-07-19 23:20:23,382 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-07-19 23:20:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2022-07-19 23:20:23,383 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2022-07-19 23:20:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 23:20:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure st_release_request [2022-07-19 23:20:23,383 INFO L138 BoogieDeclarations]: Found implementation of procedure st_release_request [2022-07-19 23:20:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 23:20:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure remove_cdevs [2022-07-19 23:20:23,384 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_cdevs [2022-07-19 23:20:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-19 23:20:23,384 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-19 23:20:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-07-19 23:20:23,384 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-07-19 23:20:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure get_location [2022-07-19 23:20:23,384 INFO L138 BoogieDeclarations]: Found implementation of procedure get_location [2022-07-19 23:20:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure st_compression [2022-07-19 23:20:23,385 INFO L138 BoogieDeclarations]: Found implementation of procedure st_compression [2022-07-19 23:20:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_autopm_put_device [2022-07-19 23:20:23,385 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_autopm_put_device [2022-07-19 23:20:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2022-07-19 23:20:23,385 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2022-07-19 23:20:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-19 23:20:23,385 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-19 23:20:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-19 23:20:23,386 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-19 23:20:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure check_tape [2022-07-19 23:20:23,386 INFO L138 BoogieDeclarations]: Found implementation of procedure check_tape [2022-07-19 23:20:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-19 23:20:23,386 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-19 23:20:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-19 23:20:23,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-19 23:20:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure switch_partition [2022-07-19 23:20:23,387 INFO L138 BoogieDeclarations]: Found implementation of procedure switch_partition [2022-07-19 23:20:23,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_scsi_tape [2022-07-19 23:20:23,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_scsi_tape [2022-07-19 23:20:23,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-19 23:20:23,387 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-19 23:20:23,388 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-19 23:20:23,388 INFO L130 BoogieDeclarations]: Found specification of procedure setup_buffering [2022-07-19 23:20:23,388 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_buffering [2022-07-19 23:20:23,388 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-19 23:20:23,388 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-19 23:20:23,389 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_tape_put [2022-07-19 23:20:23,389 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_tape_put [2022-07-19 23:20:23,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-19 23:20:23,389 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_cmd_ioctl [2022-07-19 23:20:23,389 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_cmd_ioctl [2022-07-19 23:20:23,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 23:20:23,390 INFO L130 BoogieDeclarations]: Found specification of procedure create_one_cdev [2022-07-19 23:20:23,390 INFO L138 BoogieDeclarations]: Found implementation of procedure create_one_cdev [2022-07-19 23:20:23,390 INFO L130 BoogieDeclarations]: Found specification of procedure queue_dma_alignment [2022-07-19 23:20:23,390 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_dma_alignment [2022-07-19 23:20:23,390 INFO L130 BoogieDeclarations]: Found specification of procedure do_load_unload [2022-07-19 23:20:23,390 INFO L138 BoogieDeclarations]: Found implementation of procedure do_load_unload [2022-07-19 23:20:23,390 INFO L130 BoogieDeclarations]: Found specification of procedure st_flush_write_buffer [2022-07-19 23:20:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure st_flush_write_buffer [2022-07-19 23:20:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-19 23:20:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-19 23:20:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure enlarge_buffer [2022-07-19 23:20:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure enlarge_buffer [2022-07-19 23:20:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2022-07-19 23:20:23,392 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2022-07-19 23:20:23,393 INFO L130 BoogieDeclarations]: Found specification of procedure st_chk_result [2022-07-19 23:20:23,394 INFO L138 BoogieDeclarations]: Found implementation of procedure st_chk_result [2022-07-19 23:20:23,394 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-07-19 23:20:23,394 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-07-19 23:20:23,395 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-19 23:20:23,395 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-19 23:20:23,395 INFO L130 BoogieDeclarations]: Found specification of procedure write_behind_check [2022-07-19 23:20:23,395 INFO L138 BoogieDeclarations]: Found implementation of procedure write_behind_check [2022-07-19 23:20:23,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 23:20:23,399 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-19 23:20:23,400 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-19 23:20:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-07-19 23:20:23,400 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-07-19 23:20:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-19 23:20:23,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-19 23:20:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_st_ref_mutex [2022-07-19 23:20:23,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_st_ref_mutex [2022-07-19 23:20:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 23:20:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-07-19 23:20:23,400 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-07-19 23:20:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 23:20:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure flush_buffer [2022-07-19 23:20:23,401 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_buffer [2022-07-19 23:20:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-07-19 23:20:23,401 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-07-19 23:20:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 23:20:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-19 23:20:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure driver_create_file [2022-07-19 23:20:23,401 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_create_file [2022-07-19 23:20:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure release_buffering [2022-07-19 23:20:23,402 INFO L138 BoogieDeclarations]: Found implementation of procedure release_buffering [2022-07-19 23:20:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-07-19 23:20:23,402 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-07-19 23:20:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2022-07-19 23:20:23,402 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2022-07-19 23:20:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure write_mode_page [2022-07-19 23:20:23,402 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mode_page [2022-07-19 23:20:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-19 23:20:23,402 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-19 23:20:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure rw_checks [2022-07-19 23:20:23,403 INFO L138 BoogieDeclarations]: Found implementation of procedure rw_checks [2022-07-19 23:20:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-07-19 23:20:23,403 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-07-19 23:20:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2022-07-19 23:20:23,403 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2022-07-19 23:20:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_scsi_tape [2022-07-19 23:20:23,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_scsi_tape [2022-07-19 23:20:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-19 23:20:23,403 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-19 23:20:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 23:20:23,404 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_autopm_get_device [2022-07-19 23:20:23,404 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_autopm_get_device [2022-07-19 23:20:23,404 INFO L130 BoogieDeclarations]: Found specification of procedure set_location [2022-07-19 23:20:23,404 INFO L138 BoogieDeclarations]: Found implementation of procedure set_location [2022-07-19 23:20:23,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 23:20:23,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 23:20:24,197 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 23:20:24,201 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 23:20:30,385 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 23:20:30,399 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 23:20:30,400 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 23:20:30,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:20:30 BoogieIcfgContainer [2022-07-19 23:20:30,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 23:20:30,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 23:20:30,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 23:20:30,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 23:20:30,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:20:20" (1/3) ... [2022-07-19 23:20:30,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39cb8e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:20:30, skipping insertion in model container [2022-07-19 23:20:30,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:22" (2/3) ... [2022-07-19 23:20:30,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39cb8e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:20:30, skipping insertion in model container [2022-07-19 23:20:30,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:20:30" (3/3) ... [2022-07-19 23:20:30,409 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2022-07-19 23:20:30,418 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 23:20:30,419 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 23:20:30,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 23:20:30,483 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@7debbaeb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3163f984 [2022-07-19 23:20:30,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 23:20:30,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 2182 states, 1757 states have (on average 1.5054069436539557) internal successors, (2645), 1779 states have internal predecessors, (2645), 345 states have call successors, (345), 78 states have call predecessors, (345), 78 states have return successors, (345), 345 states have call predecessors, (345), 345 states have call successors, (345) [2022-07-19 23:20:30,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-19 23:20:30,496 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:20:30,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:20:30,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:20:30,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:20:30,501 INFO L85 PathProgramCache]: Analyzing trace with hash 426041223, now seen corresponding path program 1 times [2022-07-19 23:20:30,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:20:30,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189252470] [2022-07-19 23:20:30,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:20:30,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:20:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:30,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:20:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:30,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:20:30,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:20:30,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189252470] [2022-07-19 23:20:30,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189252470] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:20:30,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:20:30,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:20:30,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483423504] [2022-07-19 23:20:30,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:20:30,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:20:30,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:20:30,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:20:30,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:20:30,922 INFO L87 Difference]: Start difference. First operand has 2182 states, 1757 states have (on average 1.5054069436539557) internal successors, (2645), 1779 states have internal predecessors, (2645), 345 states have call successors, (345), 78 states have call predecessors, (345), 78 states have return successors, (345), 345 states have call predecessors, (345), 345 states have call successors, (345) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 23:20:31,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:20:31,056 INFO L93 Difference]: Finished difference Result 4356 states and 6772 transitions. [2022-07-19 23:20:31,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:20:31,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-07-19 23:20:31,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:20:31,077 INFO L225 Difference]: With dead ends: 4356 [2022-07-19 23:20:31,077 INFO L226 Difference]: Without dead ends: 2176 [2022-07-19 23:20:31,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:20:31,093 INFO L413 NwaCegarLoop]: 3295 mSDtfsCounter, 3291 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3291 SdHoareTripleChecker+Valid, 3295 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:20:31,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3291 Valid, 3295 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 23:20:31,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2022-07-19 23:20:31,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2176. [2022-07-19 23:20:31,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2176 states, 1753 states have (on average 1.488876212207644) internal successors, (2610), 1773 states have internal predecessors, (2610), 345 states have call successors, (345), 78 states have call predecessors, (345), 77 states have return successors, (337), 337 states have call predecessors, (337), 337 states have call successors, (337) [2022-07-19 23:20:31,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 3292 transitions. [2022-07-19 23:20:31,194 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 3292 transitions. Word has length 18 [2022-07-19 23:20:31,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:20:31,195 INFO L495 AbstractCegarLoop]: Abstraction has 2176 states and 3292 transitions. [2022-07-19 23:20:31,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 23:20:31,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 3292 transitions. [2022-07-19 23:20:31,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-19 23:20:31,196 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:20:31,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:20:31,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 23:20:31,199 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:20:31,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:20:31,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1127105801, now seen corresponding path program 1 times [2022-07-19 23:20:31,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:20:31,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177442085] [2022-07-19 23:20:31,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:20:31,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:20:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:31,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:20:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:31,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:20:31,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:20:31,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177442085] [2022-07-19 23:20:31,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177442085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:20:31,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:20:31,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:20:31,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756714498] [2022-07-19 23:20:31,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:20:31,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:20:31,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:20:31,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:20:31,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:20:31,343 INFO L87 Difference]: Start difference. First operand 2176 states and 3292 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 23:20:31,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:20:31,463 INFO L93 Difference]: Finished difference Result 4345 states and 6575 transitions. [2022-07-19 23:20:31,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:20:31,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-07-19 23:20:31,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:20:31,477 INFO L225 Difference]: With dead ends: 4345 [2022-07-19 23:20:31,477 INFO L226 Difference]: Without dead ends: 2176 [2022-07-19 23:20:31,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:20:31,492 INFO L413 NwaCegarLoop]: 3290 mSDtfsCounter, 3285 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3285 SdHoareTripleChecker+Valid, 3290 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:20:31,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3285 Valid, 3290 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 23:20:31,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2022-07-19 23:20:31,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2176. [2022-07-19 23:20:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2176 states, 1753 states have (on average 1.4883057615516257) internal successors, (2609), 1773 states have internal predecessors, (2609), 345 states have call successors, (345), 78 states have call predecessors, (345), 77 states have return successors, (337), 337 states have call predecessors, (337), 337 states have call successors, (337) [2022-07-19 23:20:31,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 3291 transitions. [2022-07-19 23:20:31,553 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 3291 transitions. Word has length 18 [2022-07-19 23:20:31,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:20:31,554 INFO L495 AbstractCegarLoop]: Abstraction has 2176 states and 3291 transitions. [2022-07-19 23:20:31,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 23:20:31,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 3291 transitions. [2022-07-19 23:20:31,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-19 23:20:31,554 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:20:31,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:20:31,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 23:20:31,555 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:20:31,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:20:31,555 INFO L85 PathProgramCache]: Analyzing trace with hash 734078791, now seen corresponding path program 1 times [2022-07-19 23:20:31,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:20:31,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978428249] [2022-07-19 23:20:31,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:20:31,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:20:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:31,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:20:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:20:31,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:20:31,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978428249] [2022-07-19 23:20:31,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978428249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:20:31,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:20:31,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:20:31,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858011953] [2022-07-19 23:20:31,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:20:31,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:20:31,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:20:31,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:20:31,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:20:31,676 INFO L87 Difference]: Start difference. First operand 2176 states and 3291 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 23:20:31,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:20:31,744 INFO L93 Difference]: Finished difference Result 2178 states and 3292 transitions. [2022-07-19 23:20:31,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:20:31,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-07-19 23:20:31,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:20:31,753 INFO L225 Difference]: With dead ends: 2178 [2022-07-19 23:20:31,753 INFO L226 Difference]: Without dead ends: 2175 [2022-07-19 23:20:31,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:20:31,755 INFO L413 NwaCegarLoop]: 3288 mSDtfsCounter, 3276 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3276 SdHoareTripleChecker+Valid, 3288 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:20:31,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3276 Valid, 3288 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 23:20:31,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2175 states. [2022-07-19 23:20:31,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2175 to 2175. [2022-07-19 23:20:31,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2175 states, 1753 states have (on average 1.4877353108956075) internal successors, (2608), 1772 states have internal predecessors, (2608), 344 states have call successors, (344), 78 states have call predecessors, (344), 77 states have return successors, (337), 337 states have call predecessors, (337), 337 states have call successors, (337) [2022-07-19 23:20:31,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 3289 transitions. [2022-07-19 23:20:31,806 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 3289 transitions. Word has length 18 [2022-07-19 23:20:31,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:20:31,806 INFO L495 AbstractCegarLoop]: Abstraction has 2175 states and 3289 transitions. [2022-07-19 23:20:31,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 23:20:31,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 3289 transitions. [2022-07-19 23:20:31,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-19 23:20:31,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:20:31,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:20:31,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 23:20:31,808 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:20:31,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:20:31,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1280897129, now seen corresponding path program 1 times [2022-07-19 23:20:31,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:20:31,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303999790] [2022-07-19 23:20:31,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:20:31,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:20:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:31,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:20:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:31,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:20:31,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:20:31,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303999790] [2022-07-19 23:20:31,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303999790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:20:31,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:20:31,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:20:31,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574516757] [2022-07-19 23:20:31,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:20:31,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:20:31,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:20:31,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:20:31,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:20:31,920 INFO L87 Difference]: Start difference. First operand 2175 states and 3289 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 23:20:32,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:20:32,048 INFO L93 Difference]: Finished difference Result 6401 states and 9695 transitions. [2022-07-19 23:20:32,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:20:32,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-07-19 23:20:32,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:20:32,072 INFO L225 Difference]: With dead ends: 6401 [2022-07-19 23:20:32,072 INFO L226 Difference]: Without dead ends: 4267 [2022-07-19 23:20:32,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:20:32,083 INFO L413 NwaCegarLoop]: 5401 mSDtfsCounter, 3271 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3271 SdHoareTripleChecker+Valid, 8567 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:20:32,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3271 Valid, 8567 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 23:20:32,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2022-07-19 23:20:32,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4262. [2022-07-19 23:20:32,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4262 states, 3448 states have (on average 1.4895591647331787) internal successors, (5136), 3479 states have internal predecessors, (5136), 662 states have call successors, (662), 153 states have call predecessors, (662), 151 states have return successors, (657), 651 states have call predecessors, (657), 651 states have call successors, (657) [2022-07-19 23:20:32,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4262 states to 4262 states and 6455 transitions. [2022-07-19 23:20:32,228 INFO L78 Accepts]: Start accepts. Automaton has 4262 states and 6455 transitions. Word has length 19 [2022-07-19 23:20:32,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:20:32,228 INFO L495 AbstractCegarLoop]: Abstraction has 4262 states and 6455 transitions. [2022-07-19 23:20:32,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 23:20:32,229 INFO L276 IsEmpty]: Start isEmpty. Operand 4262 states and 6455 transitions. [2022-07-19 23:20:32,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-19 23:20:32,229 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:20:32,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:20:32,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 23:20:32,230 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:20:32,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:20:32,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1052401290, now seen corresponding path program 1 times [2022-07-19 23:20:32,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:20:32,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925648856] [2022-07-19 23:20:32,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:20:32,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:20:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:32,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:20:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:20:32,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:20:32,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925648856] [2022-07-19 23:20:32,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925648856] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:20:32,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:20:32,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:20:32,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362651549] [2022-07-19 23:20:32,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:20:32,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:20:32,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:20:32,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:20:32,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:20:32,309 INFO L87 Difference]: Start difference. First operand 4262 states and 6455 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 23:20:32,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:20:32,391 INFO L93 Difference]: Finished difference Result 4264 states and 6456 transitions. [2022-07-19 23:20:32,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:20:32,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-07-19 23:20:32,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:20:32,414 INFO L225 Difference]: With dead ends: 4264 [2022-07-19 23:20:32,414 INFO L226 Difference]: Without dead ends: 4261 [2022-07-19 23:20:32,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:20:32,418 INFO L413 NwaCegarLoop]: 3286 mSDtfsCounter, 3272 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3272 SdHoareTripleChecker+Valid, 3286 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:20:32,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3272 Valid, 3286 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 23:20:32,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4261 states. [2022-07-19 23:20:32,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4261 to 4261. [2022-07-19 23:20:32,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4261 states, 3448 states have (on average 1.4892691415313226) internal successors, (5135), 3478 states have internal predecessors, (5135), 661 states have call successors, (661), 153 states have call predecessors, (661), 151 states have return successors, (657), 651 states have call predecessors, (657), 651 states have call successors, (657) [2022-07-19 23:20:32,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4261 states to 4261 states and 6453 transitions. [2022-07-19 23:20:32,549 INFO L78 Accepts]: Start accepts. Automaton has 4261 states and 6453 transitions. Word has length 20 [2022-07-19 23:20:32,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:20:32,549 INFO L495 AbstractCegarLoop]: Abstraction has 4261 states and 6453 transitions. [2022-07-19 23:20:32,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 23:20:32,550 INFO L276 IsEmpty]: Start isEmpty. Operand 4261 states and 6453 transitions. [2022-07-19 23:20:32,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-19 23:20:32,553 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:20:32,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:20:32,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 23:20:32,554 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:20:32,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:20:32,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1735997556, now seen corresponding path program 1 times [2022-07-19 23:20:32,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:20:32,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377582233] [2022-07-19 23:20:32,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:20:32,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:20:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:32,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:20:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:20:32,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:20:32,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377582233] [2022-07-19 23:20:32,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377582233] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:20:32,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:20:32,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:20:32,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675079326] [2022-07-19 23:20:32,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:20:32,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:20:32,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:20:32,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:20:32,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:20:32,643 INFO L87 Difference]: Start difference. First operand 4261 states and 6453 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 23:20:32,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:20:32,737 INFO L93 Difference]: Finished difference Result 4333 states and 6511 transitions. [2022-07-19 23:20:32,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:20:32,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-07-19 23:20:32,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:20:32,757 INFO L225 Difference]: With dead ends: 4333 [2022-07-19 23:20:32,757 INFO L226 Difference]: Without dead ends: 4312 [2022-07-19 23:20:32,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:20:32,764 INFO L413 NwaCegarLoop]: 3288 mSDtfsCounter, 3107 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3107 SdHoareTripleChecker+Valid, 3473 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:20:32,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3107 Valid, 3473 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 23:20:32,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2022-07-19 23:20:32,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 4310. [2022-07-19 23:20:32,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 3491 states have (on average 1.4818103695216271) internal successors, (5173), 3519 states have internal predecessors, (5173), 651 states have call successors, (651), 169 states have call predecessors, (651), 167 states have return successors, (649), 643 states have call predecessors, (649), 643 states have call successors, (649) [2022-07-19 23:20:32,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 6473 transitions. [2022-07-19 23:20:32,934 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 6473 transitions. Word has length 21 [2022-07-19 23:20:32,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:20:32,934 INFO L495 AbstractCegarLoop]: Abstraction has 4310 states and 6473 transitions. [2022-07-19 23:20:32,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 23:20:32,935 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 6473 transitions. [2022-07-19 23:20:32,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-19 23:20:32,940 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:20:32,940 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 23:20:32,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 23:20:32,940 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:20:32,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:20:32,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1313551294, now seen corresponding path program 1 times [2022-07-19 23:20:32,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:20:32,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062255282] [2022-07-19 23:20:32,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:20:32,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:20:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:33,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:20:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:33,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 23:20:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:33,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 23:20:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:33,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 23:20:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:33,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:20:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:33,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 23:20:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 23:20:33,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:20:33,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062255282] [2022-07-19 23:20:33,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062255282] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:20:33,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:20:33,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:20:33,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610184594] [2022-07-19 23:20:33,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:20:33,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:20:33,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:20:33,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:20:33,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:20:33,125 INFO L87 Difference]: Start difference. First operand 4310 states and 6473 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 23:20:36,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:20:36,816 INFO L93 Difference]: Finished difference Result 8570 states and 12881 transitions. [2022-07-19 23:20:36,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:20:36,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2022-07-19 23:20:36,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:20:36,842 INFO L225 Difference]: With dead ends: 8570 [2022-07-19 23:20:36,842 INFO L226 Difference]: Without dead ends: 4313 [2022-07-19 23:20:36,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:20:36,859 INFO L413 NwaCegarLoop]: 4180 mSDtfsCounter, 4705 mSDsluCounter, 3269 mSDsCounter, 0 mSdLazyCounter, 2541 mSolverCounterSat, 913 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5015 SdHoareTripleChecker+Valid, 7449 SdHoareTripleChecker+Invalid, 3454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 913 IncrementalHoareTripleChecker+Valid, 2541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:20:36,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5015 Valid, 7449 Invalid, 3454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [913 Valid, 2541 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-19 23:20:36,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4313 states. [2022-07-19 23:20:36,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4313 to 4310. [2022-07-19 23:20:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 3491 states have (on average 1.4812374677742768) internal successors, (5171), 3519 states have internal predecessors, (5171), 651 states have call successors, (651), 169 states have call predecessors, (651), 167 states have return successors, (643), 643 states have call predecessors, (643), 640 states have call successors, (643) [2022-07-19 23:20:36,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 6465 transitions. [2022-07-19 23:20:36,977 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 6465 transitions. Word has length 61 [2022-07-19 23:20:36,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:20:36,978 INFO L495 AbstractCegarLoop]: Abstraction has 4310 states and 6465 transitions. [2022-07-19 23:20:36,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 23:20:36,978 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 6465 transitions. [2022-07-19 23:20:36,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-19 23:20:36,981 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:20:36,981 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 23:20:36,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 23:20:36,981 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:20:36,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:20:36,982 INFO L85 PathProgramCache]: Analyzing trace with hash 2136944131, now seen corresponding path program 1 times [2022-07-19 23:20:36,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:20:36,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268885331] [2022-07-19 23:20:36,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:20:36,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:20:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:37,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:20:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:37,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 23:20:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:37,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 23:20:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:37,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 23:20:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:37,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:20:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:37,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 23:20:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:37,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 23:20:37,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:20:37,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268885331] [2022-07-19 23:20:37,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268885331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:20:37,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:20:37,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 23:20:37,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108603154] [2022-07-19 23:20:37,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:20:37,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 23:20:37,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:20:37,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 23:20:37,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:20:37,188 INFO L87 Difference]: Start difference. First operand 4310 states and 6465 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 23:20:43,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:20:43,534 INFO L93 Difference]: Finished difference Result 6392 states and 9710 transitions. [2022-07-19 23:20:43,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:20:43,535 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2022-07-19 23:20:43,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:20:43,552 INFO L225 Difference]: With dead ends: 6392 [2022-07-19 23:20:43,552 INFO L226 Difference]: Without dead ends: 5310 [2022-07-19 23:20:43,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:20:43,558 INFO L413 NwaCegarLoop]: 4247 mSDtfsCounter, 2864 mSDsluCounter, 10609 mSDsCounter, 0 mSdLazyCounter, 7685 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3000 SdHoareTripleChecker+Valid, 14856 SdHoareTripleChecker+Invalid, 8319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 7685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:20:43,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3000 Valid, 14856 Invalid, 8319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 7685 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-07-19 23:20:43,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5310 states. [2022-07-19 23:20:43,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5310 to 3961. [2022-07-19 23:20:43,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3961 states, 3182 states have (on average 1.4685732243871779) internal successors, (4673), 3208 states have internal predecessors, (4673), 612 states have call successors, (612), 168 states have call predecessors, (612), 166 states have return successors, (606), 606 states have call predecessors, (606), 603 states have call successors, (606) [2022-07-19 23:20:43,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3961 states to 3961 states and 5891 transitions. [2022-07-19 23:20:43,679 INFO L78 Accepts]: Start accepts. Automaton has 3961 states and 5891 transitions. Word has length 61 [2022-07-19 23:20:43,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:20:43,679 INFO L495 AbstractCegarLoop]: Abstraction has 3961 states and 5891 transitions. [2022-07-19 23:20:43,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 23:20:43,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3961 states and 5891 transitions. [2022-07-19 23:20:43,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-19 23:20:43,683 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:20:43,683 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 23:20:43,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 23:20:43,684 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:20:43,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:20:43,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1364454553, now seen corresponding path program 1 times [2022-07-19 23:20:43,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:20:43,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10608415] [2022-07-19 23:20:43,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:20:43,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:20:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:43,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:20:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:43,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:20:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:43,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:20:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:43,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 23:20:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:43,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 23:20:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:43,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:20:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 23:20:43,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:20:43,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10608415] [2022-07-19 23:20:43,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10608415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:20:43,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:20:43,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:20:43,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706651201] [2022-07-19 23:20:43,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:20:43,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:20:43,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:20:43,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:20:43,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:20:43,822 INFO L87 Difference]: Start difference. First operand 3961 states and 5891 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-19 23:20:47,743 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:20:51,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:20:51,701 INFO L93 Difference]: Finished difference Result 8987 states and 13565 transitions. [2022-07-19 23:20:51,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 23:20:51,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 63 [2022-07-19 23:20:51,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:20:51,721 INFO L225 Difference]: With dead ends: 8987 [2022-07-19 23:20:51,722 INFO L226 Difference]: Without dead ends: 5079 [2022-07-19 23:20:51,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:20:51,737 INFO L413 NwaCegarLoop]: 3148 mSDtfsCounter, 2633 mSDsluCounter, 3578 mSDsCounter, 0 mSdLazyCounter, 4219 mSolverCounterSat, 1060 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2926 SdHoareTripleChecker+Valid, 6726 SdHoareTripleChecker+Invalid, 5280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1060 IncrementalHoareTripleChecker+Valid, 4219 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:20:51,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2926 Valid, 6726 Invalid, 5280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1060 Valid, 4219 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-07-19 23:20:51,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5079 states. [2022-07-19 23:20:51,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5079 to 4784. [2022-07-19 23:20:51,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4784 states, 3864 states have (on average 1.4754140786749483) internal successors, (5701), 3895 states have internal predecessors, (5701), 753 states have call successors, (753), 168 states have call predecessors, (753), 166 states have return successors, (748), 748 states have call predecessors, (748), 744 states have call successors, (748) [2022-07-19 23:20:51,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4784 states to 4784 states and 7202 transitions. [2022-07-19 23:20:51,884 INFO L78 Accepts]: Start accepts. Automaton has 4784 states and 7202 transitions. Word has length 63 [2022-07-19 23:20:51,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:20:51,884 INFO L495 AbstractCegarLoop]: Abstraction has 4784 states and 7202 transitions. [2022-07-19 23:20:51,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-19 23:20:51,884 INFO L276 IsEmpty]: Start isEmpty. Operand 4784 states and 7202 transitions. [2022-07-19 23:20:51,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-19 23:20:51,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:20:51,887 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:20:51,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 23:20:51,887 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:20:51,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:20:51,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1555859730, now seen corresponding path program 1 times [2022-07-19 23:20:51,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:20:51,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036631751] [2022-07-19 23:20:51,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:20:51,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:20:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:52,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:20:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:52,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 23:20:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:52,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 23:20:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:52,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 23:20:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:52,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:20:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:52,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 23:20:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:52,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 23:20:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:52,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 23:20:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:52,053 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 23:20:52,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:20:52,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036631751] [2022-07-19 23:20:52,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036631751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:20:52,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:20:52,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 23:20:52,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872005450] [2022-07-19 23:20:52,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:20:52,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 23:20:52,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:20:52,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 23:20:52,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:20:52,055 INFO L87 Difference]: Start difference. First operand 4784 states and 7202 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 23:20:59,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:20:59,442 INFO L93 Difference]: Finished difference Result 8110 states and 12296 transitions. [2022-07-19 23:20:59,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:20:59,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2022-07-19 23:20:59,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:20:59,464 INFO L225 Difference]: With dead ends: 8110 [2022-07-19 23:20:59,464 INFO L226 Difference]: Without dead ends: 6592 [2022-07-19 23:20:59,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:20:59,472 INFO L413 NwaCegarLoop]: 4236 mSDtfsCounter, 3860 mSDsluCounter, 9569 mSDsCounter, 0 mSdLazyCounter, 7605 mSolverCounterSat, 726 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3996 SdHoareTripleChecker+Valid, 13805 SdHoareTripleChecker+Invalid, 8331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 726 IncrementalHoareTripleChecker+Valid, 7605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:20:59,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3996 Valid, 13805 Invalid, 8331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [726 Valid, 7605 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-07-19 23:20:59,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6592 states. [2022-07-19 23:20:59,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6592 to 4782. [2022-07-19 23:20:59,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4782 states, 3862 states have (on average 1.4751424132573796) internal successors, (5697), 3893 states have internal predecessors, (5697), 753 states have call successors, (753), 168 states have call predecessors, (753), 166 states have return successors, (748), 748 states have call predecessors, (748), 744 states have call successors, (748) [2022-07-19 23:20:59,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4782 states to 4782 states and 7198 transitions. [2022-07-19 23:20:59,632 INFO L78 Accepts]: Start accepts. Automaton has 4782 states and 7198 transitions. Word has length 78 [2022-07-19 23:20:59,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:20:59,632 INFO L495 AbstractCegarLoop]: Abstraction has 4782 states and 7198 transitions. [2022-07-19 23:20:59,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 23:20:59,633 INFO L276 IsEmpty]: Start isEmpty. Operand 4782 states and 7198 transitions. [2022-07-19 23:20:59,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-19 23:20:59,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:20:59,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:20:59,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 23:20:59,636 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:20:59,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:20:59,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1260357111, now seen corresponding path program 1 times [2022-07-19 23:20:59,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:20:59,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354889737] [2022-07-19 23:20:59,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:20:59,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:20:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:59,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:20:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:59,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:20:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:59,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 23:20:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:59,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:20:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:59,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:20:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:59,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 23:20:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:59,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 23:20:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:59,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 23:20:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:59,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 23:20:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:59,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:20:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:59,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:20:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:20:59,790 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 23:20:59,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:20:59,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354889737] [2022-07-19 23:20:59,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354889737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:20:59,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:20:59,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:20:59,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990159489] [2022-07-19 23:20:59,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:20:59,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:20:59,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:20:59,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:20:59,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:20:59,793 INFO L87 Difference]: Start difference. First operand 4782 states and 7198 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 23:21:04,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:21:09,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:21:09,921 INFO L93 Difference]: Finished difference Result 12026 states and 18584 transitions. [2022-07-19 23:21:09,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:21:09,922 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 82 [2022-07-19 23:21:09,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:21:09,952 INFO L225 Difference]: With dead ends: 12026 [2022-07-19 23:21:09,953 INFO L226 Difference]: Without dead ends: 7297 [2022-07-19 23:21:09,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:21:09,971 INFO L413 NwaCegarLoop]: 3818 mSDtfsCounter, 3734 mSDsluCounter, 6326 mSDsCounter, 0 mSdLazyCounter, 6009 mSolverCounterSat, 1620 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4080 SdHoareTripleChecker+Valid, 10144 SdHoareTripleChecker+Invalid, 7630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1620 IncrementalHoareTripleChecker+Valid, 6009 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:21:09,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4080 Valid, 10144 Invalid, 7630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1620 Valid, 6009 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2022-07-19 23:21:09,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7297 states. [2022-07-19 23:21:10,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7297 to 6511. [2022-07-19 23:21:10,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6511 states, 5310 states have (on average 1.4922787193973635) internal successors, (7924), 5340 states have internal predecessors, (7924), 1034 states have call successors, (1034), 168 states have call predecessors, (1034), 166 states have return successors, (1033), 1033 states have call predecessors, (1033), 1025 states have call successors, (1033) [2022-07-19 23:21:10,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6511 states to 6511 states and 9991 transitions. [2022-07-19 23:21:10,198 INFO L78 Accepts]: Start accepts. Automaton has 6511 states and 9991 transitions. Word has length 82 [2022-07-19 23:21:10,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:21:10,198 INFO L495 AbstractCegarLoop]: Abstraction has 6511 states and 9991 transitions. [2022-07-19 23:21:10,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 23:21:10,198 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 9991 transitions. [2022-07-19 23:21:10,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-19 23:21:10,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:21:10,204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:21:10,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 23:21:10,204 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:21:10,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:21:10,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1025149567, now seen corresponding path program 1 times [2022-07-19 23:21:10,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:21:10,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815059747] [2022-07-19 23:21:10,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:21:10,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:21:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:10,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:21:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:10,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:21:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:10,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:21:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:10,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:21:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:10,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:21:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:10,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 23:21:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:10,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 23:21:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:10,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:21:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:10,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 23:21:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:10,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 23:21:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:10,385 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 23:21:10,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:21:10,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815059747] [2022-07-19 23:21:10,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815059747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:21:10,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:21:10,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:21:10,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023208785] [2022-07-19 23:21:10,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:21:10,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:21:10,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:21:10,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:21:10,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:21:10,387 INFO L87 Difference]: Start difference. First operand 6511 states and 9991 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 23:21:14,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:21:14,314 INFO L93 Difference]: Finished difference Result 6857 states and 10641 transitions. [2022-07-19 23:21:14,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:21:14,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 81 [2022-07-19 23:21:14,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:21:14,343 INFO L225 Difference]: With dead ends: 6857 [2022-07-19 23:21:14,343 INFO L226 Difference]: Without dead ends: 6854 [2022-07-19 23:21:14,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:21:14,350 INFO L413 NwaCegarLoop]: 3155 mSDtfsCounter, 2096 mSDsluCounter, 4118 mSDsCounter, 0 mSdLazyCounter, 3354 mSolverCounterSat, 896 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2207 SdHoareTripleChecker+Valid, 7273 SdHoareTripleChecker+Invalid, 4250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 896 IncrementalHoareTripleChecker+Valid, 3354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:21:14,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2207 Valid, 7273 Invalid, 4250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [896 Valid, 3354 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-19 23:21:14,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6854 states. [2022-07-19 23:21:14,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6854 to 6510. [2022-07-19 23:21:14,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6510 states, 5310 states have (on average 1.4919020715630884) internal successors, (7922), 5339 states have internal predecessors, (7922), 1033 states have call successors, (1033), 168 states have call predecessors, (1033), 166 states have return successors, (1033), 1033 states have call predecessors, (1033), 1025 states have call successors, (1033) [2022-07-19 23:21:14,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6510 states to 6510 states and 9988 transitions. [2022-07-19 23:21:14,563 INFO L78 Accepts]: Start accepts. Automaton has 6510 states and 9988 transitions. Word has length 81 [2022-07-19 23:21:14,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:21:14,565 INFO L495 AbstractCegarLoop]: Abstraction has 6510 states and 9988 transitions. [2022-07-19 23:21:14,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 23:21:14,565 INFO L276 IsEmpty]: Start isEmpty. Operand 6510 states and 9988 transitions. [2022-07-19 23:21:14,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-19 23:21:14,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:21:14,579 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 23:21:14,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 23:21:14,579 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:21:14,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:21:14,580 INFO L85 PathProgramCache]: Analyzing trace with hash -506086540, now seen corresponding path program 1 times [2022-07-19 23:21:14,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:21:14,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921108389] [2022-07-19 23:21:14,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:21:14,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:21:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:14,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:21:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:14,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:21:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:14,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:21:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:14,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:21:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:14,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:21:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:14,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 23:21:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:14,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 23:21:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:14,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:21:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:14,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 23:21:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:14,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 23:21:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:14,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:21:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:14,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 23:21:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:14,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 23:21:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:14,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 23:21:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:14,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 23:21:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:14,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 23:21:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:14,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 23:21:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:14,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:21:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 23:21:14,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:21:14,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921108389] [2022-07-19 23:21:14,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921108389] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:21:14,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:21:14,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 23:21:14,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313399362] [2022-07-19 23:21:14,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:21:14,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 23:21:14,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:21:14,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 23:21:14,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:21:14,803 INFO L87 Difference]: Start difference. First operand 6510 states and 9988 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-19 23:21:21,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:21:21,233 INFO L93 Difference]: Finished difference Result 13459 states and 20861 transitions. [2022-07-19 23:21:21,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 23:21:21,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 144 [2022-07-19 23:21:21,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:21:21,264 INFO L225 Difference]: With dead ends: 13459 [2022-07-19 23:21:21,264 INFO L226 Difference]: Without dead ends: 6990 [2022-07-19 23:21:21,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-07-19 23:21:21,285 INFO L413 NwaCegarLoop]: 3067 mSDtfsCounter, 3902 mSDsluCounter, 7094 mSDsCounter, 0 mSdLazyCounter, 5790 mSolverCounterSat, 2098 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3904 SdHoareTripleChecker+Valid, 10161 SdHoareTripleChecker+Invalid, 7888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2098 IncrementalHoareTripleChecker+Valid, 5790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:21:21,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3904 Valid, 10161 Invalid, 7888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2098 Valid, 5790 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-07-19 23:21:21,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6990 states. [2022-07-19 23:21:21,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6990 to 6504. [2022-07-19 23:21:21,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6504 states, 5309 states have (on average 1.4912412883782256) internal successors, (7917), 5338 states have internal predecessors, (7917), 1028 states have call successors, (1028), 168 states have call predecessors, (1028), 166 states have return successors, (1028), 1028 states have call predecessors, (1028), 1020 states have call successors, (1028) [2022-07-19 23:21:21,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6504 states to 6504 states and 9973 transitions. [2022-07-19 23:21:21,514 INFO L78 Accepts]: Start accepts. Automaton has 6504 states and 9973 transitions. Word has length 144 [2022-07-19 23:21:21,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:21:21,515 INFO L495 AbstractCegarLoop]: Abstraction has 6504 states and 9973 transitions. [2022-07-19 23:21:21,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-19 23:21:21,515 INFO L276 IsEmpty]: Start isEmpty. Operand 6504 states and 9973 transitions. [2022-07-19 23:21:21,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-19 23:21:21,533 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:21:21,533 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:21:21,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 23:21:21,534 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:21:21,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:21:21,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1900050381, now seen corresponding path program 1 times [2022-07-19 23:21:21,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:21:21,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650248898] [2022-07-19 23:21:21,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:21:21,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:21:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:21:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:21:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:21:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:21:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:21:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 23:21:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 23:21:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:21:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 23:21:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 23:21:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:21:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 23:21:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 23:21:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 23:21:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 23:21:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 23:21:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 23:21:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 23:21:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 23:21:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 23:21:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 23:21:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:21:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:21:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 23:21:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:21:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:21:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:21:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:21:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-19 23:21:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-19 23:21:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-07-19 23:21:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-19 23:21:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:21,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-19 23:21:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:22,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:21:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:22,007 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-07-19 23:21:22,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:21:22,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650248898] [2022-07-19 23:21:22,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650248898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:21:22,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:21:22,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 23:21:22,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003516534] [2022-07-19 23:21:22,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:21:22,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 23:21:22,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:21:22,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 23:21:22,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-19 23:21:22,009 INFO L87 Difference]: Start difference. First operand 6504 states and 9973 transitions. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 5 states have internal predecessors, (137), 4 states have call successors, (36), 9 states have call predecessors, (36), 1 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2022-07-19 23:21:27,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:21:34,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:21:34,503 INFO L93 Difference]: Finished difference Result 13716 states and 21377 transitions. [2022-07-19 23:21:34,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 23:21:34,504 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 5 states have internal predecessors, (137), 4 states have call successors, (36), 9 states have call predecessors, (36), 1 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) Word has length 239 [2022-07-19 23:21:34,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:21:34,526 INFO L225 Difference]: With dead ends: 13716 [2022-07-19 23:21:34,526 INFO L226 Difference]: Without dead ends: 7235 [2022-07-19 23:21:34,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-07-19 23:21:34,543 INFO L413 NwaCegarLoop]: 3044 mSDtfsCounter, 4711 mSDsluCounter, 9441 mSDsCounter, 0 mSdLazyCounter, 9969 mSolverCounterSat, 2695 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4748 SdHoareTripleChecker+Valid, 12485 SdHoareTripleChecker+Invalid, 12665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2695 IncrementalHoareTripleChecker+Valid, 9969 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:21:34,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4748 Valid, 12485 Invalid, 12665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2695 Valid, 9969 Invalid, 1 Unknown, 0 Unchecked, 12.0s Time] [2022-07-19 23:21:34,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7235 states. [2022-07-19 23:21:34,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7235 to 6512. [2022-07-19 23:21:34,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6512 states, 5312 states have (on average 1.4890813253012047) internal successors, (7910), 5341 states have internal predecessors, (7910), 1033 states have call successors, (1033), 168 states have call predecessors, (1033), 166 states have return successors, (1033), 1033 states have call predecessors, (1033), 1025 states have call successors, (1033) [2022-07-19 23:21:34,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6512 states to 6512 states and 9976 transitions. [2022-07-19 23:21:34,747 INFO L78 Accepts]: Start accepts. Automaton has 6512 states and 9976 transitions. Word has length 239 [2022-07-19 23:21:34,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:21:34,747 INFO L495 AbstractCegarLoop]: Abstraction has 6512 states and 9976 transitions. [2022-07-19 23:21:34,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 5 states have internal predecessors, (137), 4 states have call successors, (36), 9 states have call predecessors, (36), 1 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2022-07-19 23:21:34,748 INFO L276 IsEmpty]: Start isEmpty. Operand 6512 states and 9976 transitions. [2022-07-19 23:21:34,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-07-19 23:21:34,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:21:34,764 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:21:34,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 23:21:34,764 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:21:34,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:21:34,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1106676286, now seen corresponding path program 1 times [2022-07-19 23:21:34,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:21:34,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496900349] [2022-07-19 23:21:34,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:21:34,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:21:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:34,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:21:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:34,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:21:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:34,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:21:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:34,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 23:21:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:34,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:21:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:34,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 23:21:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:34,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 23:21:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:34,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 23:21:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:34,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 23:21:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:34,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 23:21:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:34,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 23:21:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:34,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 23:21:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:34,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 23:21:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:34,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 23:21:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:34,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 23:21:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:34,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 23:21:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:34,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 23:21:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:34,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 23:21:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:34,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 23:21:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:34,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 23:21:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:34,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-19 23:21:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:35,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:21:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:35,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:21:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:35,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 23:21:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:35,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:21:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:35,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:21:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:35,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:21:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:35,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:21:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:35,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-19 23:21:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:35,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-19 23:21:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:35,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-19 23:21:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:35,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-07-19 23:21:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:35,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-07-19 23:21:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:35,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:21:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-19 23:21:35,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:21:35,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496900349] [2022-07-19 23:21:35,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496900349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:21:35,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:21:35,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 23:21:35,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626620197] [2022-07-19 23:21:35,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:21:35,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 23:21:35,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:21:35,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 23:21:35,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:21:35,107 INFO L87 Difference]: Start difference. First operand 6512 states and 9976 transitions. Second operand has 13 states, 13 states have (on average 12.692307692307692) internal successors, (165), 6 states have internal predecessors, (165), 4 states have call successors, (36), 9 states have call predecessors, (36), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2022-07-19 23:21:42,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:21:44,035 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 [] [2022-07-19 23:21:53,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:21:53,699 INFO L93 Difference]: Finished difference Result 13890 states and 21920 transitions. [2022-07-19 23:21:53,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 23:21:53,700 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.692307692307692) internal successors, (165), 6 states have internal predecessors, (165), 4 states have call successors, (36), 9 states have call predecessors, (36), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) Word has length 263 [2022-07-19 23:21:53,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:21:53,727 INFO L225 Difference]: With dead ends: 13890 [2022-07-19 23:21:53,727 INFO L226 Difference]: Without dead ends: 7394 [2022-07-19 23:21:53,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2022-07-19 23:21:53,747 INFO L413 NwaCegarLoop]: 3043 mSDtfsCounter, 4473 mSDsluCounter, 11930 mSDsCounter, 0 mSdLazyCounter, 13533 mSolverCounterSat, 2475 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4475 SdHoareTripleChecker+Valid, 14973 SdHoareTripleChecker+Invalid, 16010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2475 IncrementalHoareTripleChecker+Valid, 13533 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2022-07-19 23:21:53,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4475 Valid, 14973 Invalid, 16010 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2475 Valid, 13533 Invalid, 2 Unknown, 0 Unchecked, 17.9s Time] [2022-07-19 23:21:53,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7394 states. [2022-07-19 23:21:53,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7394 to 6576. [2022-07-19 23:21:53,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6576 states, 5375 states have (on average 1.4852093023255815) internal successors, (7983), 5397 states have internal predecessors, (7983), 1033 states have call successors, (1033), 167 states have call predecessors, (1033), 167 states have return successors, (1036), 1033 states have call predecessors, (1036), 1025 states have call successors, (1036) [2022-07-19 23:21:53,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6576 states to 6576 states and 10052 transitions. [2022-07-19 23:21:53,979 INFO L78 Accepts]: Start accepts. Automaton has 6576 states and 10052 transitions. Word has length 263 [2022-07-19 23:21:53,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:21:53,979 INFO L495 AbstractCegarLoop]: Abstraction has 6576 states and 10052 transitions. [2022-07-19 23:21:53,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.692307692307692) internal successors, (165), 6 states have internal predecessors, (165), 4 states have call successors, (36), 9 states have call predecessors, (36), 3 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2022-07-19 23:21:53,979 INFO L276 IsEmpty]: Start isEmpty. Operand 6576 states and 10052 transitions. [2022-07-19 23:21:53,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-07-19 23:21:53,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:21:53,996 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:21:53,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 23:21:53,997 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:21:53,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:21:53,997 INFO L85 PathProgramCache]: Analyzing trace with hash -2009801004, now seen corresponding path program 1 times [2022-07-19 23:21:53,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:21:53,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786600981] [2022-07-19 23:21:53,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:21:53,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:21:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:21:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:21:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:21:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:21:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:21:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 23:21:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 23:21:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:21:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 23:21:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 23:21:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:21:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 23:21:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 23:21:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 23:21:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 23:21:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 23:21:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 23:21:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 23:21:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 23:21:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 23:21:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:21:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:21:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 23:21:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:21:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:21:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:21:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:21:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-19 23:21:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-19 23:21:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-19 23:21:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-19 23:21:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-19 23:21:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:21:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:21:54,384 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-19 23:21:54,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:21:54,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786600981] [2022-07-19 23:21:54,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786600981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:21:54,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:21:54,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 23:21:54,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715919099] [2022-07-19 23:21:54,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:21:54,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 23:21:54,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:21:54,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 23:21:54,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-19 23:21:54,387 INFO L87 Difference]: Start difference. First operand 6576 states and 10052 transitions. Second operand has 10 states, 10 states have (on average 16.0) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (35), 9 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-19 23:21:58,969 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:22:04,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:22:04,686 INFO L93 Difference]: Finished difference Result 13892 states and 21612 transitions. [2022-07-19 23:22:04,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 23:22:04,687 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (35), 9 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 249 [2022-07-19 23:22:04,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:22:04,715 INFO L225 Difference]: With dead ends: 13892 [2022-07-19 23:22:04,716 INFO L226 Difference]: Without dead ends: 7369 [2022-07-19 23:22:04,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-07-19 23:22:04,738 INFO L413 NwaCegarLoop]: 3016 mSDtfsCounter, 5157 mSDsluCounter, 6392 mSDsCounter, 0 mSdLazyCounter, 5859 mSolverCounterSat, 3102 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5159 SdHoareTripleChecker+Valid, 9408 SdHoareTripleChecker+Invalid, 8962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3102 IncrementalHoareTripleChecker+Valid, 5859 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-07-19 23:22:04,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5159 Valid, 9408 Invalid, 8962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3102 Valid, 5859 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2022-07-19 23:22:04,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7369 states. [2022-07-19 23:22:04,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7369 to 6580. [2022-07-19 23:22:04,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6580 states, 5379 states have (on average 1.4848484848484849) internal successors, (7987), 5401 states have internal predecessors, (7987), 1033 states have call successors, (1033), 167 states have call predecessors, (1033), 167 states have return successors, (1036), 1033 states have call predecessors, (1036), 1025 states have call successors, (1036) [2022-07-19 23:22:05,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6580 states to 6580 states and 10056 transitions. [2022-07-19 23:22:05,014 INFO L78 Accepts]: Start accepts. Automaton has 6580 states and 10056 transitions. Word has length 249 [2022-07-19 23:22:05,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:22:05,014 INFO L495 AbstractCegarLoop]: Abstraction has 6580 states and 10056 transitions. [2022-07-19 23:22:05,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (35), 9 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-19 23:22:05,015 INFO L276 IsEmpty]: Start isEmpty. Operand 6580 states and 10056 transitions. [2022-07-19 23:22:05,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-07-19 23:22:05,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:22:05,030 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:22:05,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 23:22:05,030 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:22:05,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:22:05,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1493708136, now seen corresponding path program 1 times [2022-07-19 23:22:05,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:22:05,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497076708] [2022-07-19 23:22:05,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:22:05,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:22:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:22:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:22:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:22:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:22:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:22:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 23:22:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 23:22:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:22:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 23:22:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 23:22:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:22:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 23:22:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 23:22:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 23:22:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 23:22:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 23:22:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 23:22:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 23:22:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 23:22:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 23:22:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:22:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:22:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 23:22:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:22:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:22:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:22:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:22:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-19 23:22:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-19 23:22:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-19 23:22:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-19 23:22:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-07-19 23:22:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:22:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:05,362 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-19 23:22:05,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:22:05,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497076708] [2022-07-19 23:22:05,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497076708] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:22:05,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597447130] [2022-07-19 23:22:05,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:22:05,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:22:05,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:22:05,364 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:22:05,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 23:22:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:06,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 3534 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 23:22:06,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:22:06,369 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 23:22:06,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:22:06,511 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-19 23:22:06,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597447130] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:22:06,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 23:22:06,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 14 [2022-07-19 23:22:06,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083354350] [2022-07-19 23:22:06,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 23:22:06,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 23:22:06,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:22:06,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 23:22:06,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-19 23:22:06,514 INFO L87 Difference]: Start difference. First operand 6580 states and 10056 transitions. Second operand has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 7 states have internal predecessors, (241), 2 states have call successors, (61), 9 states have call predecessors, (61), 2 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-07-19 23:22:11,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:22:20,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:22:20,044 INFO L93 Difference]: Finished difference Result 13916 states and 21644 transitions. [2022-07-19 23:22:20,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 23:22:20,045 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 7 states have internal predecessors, (241), 2 states have call successors, (61), 9 states have call predecessors, (61), 2 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 251 [2022-07-19 23:22:20,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:22:20,075 INFO L225 Difference]: With dead ends: 13916 [2022-07-19 23:22:20,075 INFO L226 Difference]: Without dead ends: 7389 [2022-07-19 23:22:20,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 565 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2022-07-19 23:22:20,098 INFO L413 NwaCegarLoop]: 2997 mSDtfsCounter, 4782 mSDsluCounter, 8781 mSDsCounter, 0 mSdLazyCounter, 9251 mSolverCounterSat, 2714 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4784 SdHoareTripleChecker+Valid, 11778 SdHoareTripleChecker+Invalid, 11966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2714 IncrementalHoareTripleChecker+Valid, 9251 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-07-19 23:22:20,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4784 Valid, 11778 Invalid, 11966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2714 Valid, 9251 Invalid, 1 Unknown, 0 Unchecked, 12.9s Time] [2022-07-19 23:22:20,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7389 states. [2022-07-19 23:22:20,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7389 to 6604. [2022-07-19 23:22:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6604 states, 5403 states have (on average 1.4826947991856376) internal successors, (8011), 5425 states have internal predecessors, (8011), 1033 states have call successors, (1033), 167 states have call predecessors, (1033), 167 states have return successors, (1036), 1033 states have call predecessors, (1036), 1025 states have call successors, (1036) [2022-07-19 23:22:20,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6604 states to 6604 states and 10080 transitions. [2022-07-19 23:22:20,378 INFO L78 Accepts]: Start accepts. Automaton has 6604 states and 10080 transitions. Word has length 251 [2022-07-19 23:22:20,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:22:20,379 INFO L495 AbstractCegarLoop]: Abstraction has 6604 states and 10080 transitions. [2022-07-19 23:22:20,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 7 states have internal predecessors, (241), 2 states have call successors, (61), 9 states have call predecessors, (61), 2 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-07-19 23:22:20,379 INFO L276 IsEmpty]: Start isEmpty. Operand 6604 states and 10080 transitions. [2022-07-19 23:22:20,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-07-19 23:22:20,395 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:22:20,395 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:22:20,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 23:22:20,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-19 23:22:20,620 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:22:20,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:22:20,620 INFO L85 PathProgramCache]: Analyzing trace with hash 158230500, now seen corresponding path program 2 times [2022-07-19 23:22:20,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:22:20,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800235283] [2022-07-19 23:22:20,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:22:20,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:22:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:20,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:22:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:20,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:22:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:20,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:22:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:20,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:22:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:20,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:22:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:20,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 23:22:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:20,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 23:22:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:20,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:22:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:20,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 23:22:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:20,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 23:22:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:20,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:22:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:20,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 23:22:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:20,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 23:22:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:20,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 23:22:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:20,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 23:22:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:20,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 23:22:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:20,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 23:22:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:20,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 23:22:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:20,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 23:22:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:20,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 23:22:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:21,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:22:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:21,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:22:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:21,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 23:22:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:21,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:22:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:21,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:22:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:21,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:22:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:21,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:22:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:21,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-19 23:22:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:21,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-19 23:22:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:21,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-19 23:22:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:21,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-07-19 23:22:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:21,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-07-19 23:22:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:21,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:22:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:21,099 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-07-19 23:22:21,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:22:21,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800235283] [2022-07-19 23:22:21,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800235283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:22:21,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:22:21,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 23:22:21,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846409644] [2022-07-19 23:22:21,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:22:21,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 23:22:21,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:22:21,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 23:22:21,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:22:21,102 INFO L87 Difference]: Start difference. First operand 6604 states and 10080 transitions. Second operand has 13 states, 13 states have (on average 12.461538461538462) internal successors, (162), 5 states have internal predecessors, (162), 2 states have call successors, (35), 9 states have call predecessors, (35), 2 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-19 23:22:27,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:22:29,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:22:40,643 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:22:42,685 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:22:45,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:22:45,308 INFO L93 Difference]: Finished difference Result 17791 states and 28156 transitions. [2022-07-19 23:22:45,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 23:22:45,309 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.461538461538462) internal successors, (162), 5 states have internal predecessors, (162), 2 states have call successors, (35), 9 states have call predecessors, (35), 2 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) Word has length 257 [2022-07-19 23:22:45,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:22:45,343 INFO L225 Difference]: With dead ends: 17791 [2022-07-19 23:22:45,343 INFO L226 Difference]: Without dead ends: 11240 [2022-07-19 23:22:45,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2022-07-19 23:22:45,363 INFO L413 NwaCegarLoop]: 4553 mSDtfsCounter, 6024 mSDsluCounter, 21184 mSDsCounter, 0 mSdLazyCounter, 15198 mSolverCounterSat, 2685 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6279 SdHoareTripleChecker+Valid, 25737 SdHoareTripleChecker+Invalid, 17886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2685 IncrementalHoareTripleChecker+Valid, 15198 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:22:45,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6279 Valid, 25737 Invalid, 17886 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2685 Valid, 15198 Invalid, 3 Unknown, 0 Unchecked, 23.3s Time] [2022-07-19 23:22:45,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11240 states. [2022-07-19 23:22:45,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11240 to 6618. [2022-07-19 23:22:45,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6618 states, 5415 states have (on average 1.4816251154201292) internal successors, (8023), 5435 states have internal predecessors, (8023), 1033 states have call successors, (1033), 167 states have call predecessors, (1033), 169 states have return successors, (1041), 1037 states have call predecessors, (1041), 1025 states have call successors, (1041) [2022-07-19 23:22:45,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6618 states to 6618 states and 10097 transitions. [2022-07-19 23:22:45,647 INFO L78 Accepts]: Start accepts. Automaton has 6618 states and 10097 transitions. Word has length 257 [2022-07-19 23:22:45,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:22:45,648 INFO L495 AbstractCegarLoop]: Abstraction has 6618 states and 10097 transitions. [2022-07-19 23:22:45,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.461538461538462) internal successors, (162), 5 states have internal predecessors, (162), 2 states have call successors, (35), 9 states have call predecessors, (35), 2 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-19 23:22:45,648 INFO L276 IsEmpty]: Start isEmpty. Operand 6618 states and 10097 transitions. [2022-07-19 23:22:45,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-07-19 23:22:45,659 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:22:45,659 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:22:45,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 23:22:45,659 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:22:45,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:22:45,660 INFO L85 PathProgramCache]: Analyzing trace with hash 735751408, now seen corresponding path program 1 times [2022-07-19 23:22:45,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:22:45,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387540452] [2022-07-19 23:22:45,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:22:45,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:22:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:22:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:22:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:22:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:22:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:22:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 23:22:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 23:22:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:22:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 23:22:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 23:22:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:22:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 23:22:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 23:22:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 23:22:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 23:22:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 23:22:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 23:22:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 23:22:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 23:22:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 23:22:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:22:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:22:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:45,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 23:22:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:46,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:22:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:46,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:22:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:46,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:22:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:46,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:22:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:46,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-19 23:22:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:46,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-19 23:22:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:46,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-19 23:22:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:46,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-07-19 23:22:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:46,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-19 23:22:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:46,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:22:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:22:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-19 23:22:46,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:22:46,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387540452] [2022-07-19 23:22:46,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387540452] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:22:46,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:22:46,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 23:22:46,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654282542] [2022-07-19 23:22:46,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:22:46,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 23:22:46,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:22:46,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 23:22:46,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:22:46,068 INFO L87 Difference]: Start difference. First operand 6618 states and 10097 transitions. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (35), 9 states have call predecessors, (35), 2 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-19 23:22:52,164 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:23:03,220 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:23:05,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:23:05,860 INFO L93 Difference]: Finished difference Result 11995 states and 19154 transitions. [2022-07-19 23:23:05,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 23:23:05,861 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (35), 9 states have call predecessors, (35), 2 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) Word has length 260 [2022-07-19 23:23:05,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:23:05,902 INFO L225 Difference]: With dead ends: 11995 [2022-07-19 23:23:05,902 INFO L226 Difference]: Without dead ends: 11069 [2022-07-19 23:23:05,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-07-19 23:23:05,916 INFO L413 NwaCegarLoop]: 4453 mSDtfsCounter, 6964 mSDsluCounter, 17923 mSDsCounter, 0 mSdLazyCounter, 12685 mSolverCounterSat, 3141 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6966 SdHoareTripleChecker+Valid, 22376 SdHoareTripleChecker+Invalid, 15828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3141 IncrementalHoareTripleChecker+Valid, 12685 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2022-07-19 23:23:05,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6966 Valid, 22376 Invalid, 15828 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3141 Valid, 12685 Invalid, 2 Unknown, 0 Unchecked, 18.9s Time] [2022-07-19 23:23:05,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11069 states. [2022-07-19 23:23:06,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11069 to 6470. [2022-07-19 23:23:06,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6470 states, 5288 states have (on average 1.4784417549167927) internal successors, (7818), 5307 states have internal predecessors, (7818), 1013 states have call successors, (1013), 166 states have call predecessors, (1013), 168 states have return successors, (1022), 1018 states have call predecessors, (1022), 1006 states have call successors, (1022) [2022-07-19 23:23:06,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6470 states to 6470 states and 9853 transitions. [2022-07-19 23:23:06,332 INFO L78 Accepts]: Start accepts. Automaton has 6470 states and 9853 transitions. Word has length 260 [2022-07-19 23:23:06,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:23:06,333 INFO L495 AbstractCegarLoop]: Abstraction has 6470 states and 9853 transitions. [2022-07-19 23:23:06,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 5 states have internal predecessors, (160), 2 states have call successors, (35), 9 states have call predecessors, (35), 2 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-19 23:23:06,333 INFO L276 IsEmpty]: Start isEmpty. Operand 6470 states and 9853 transitions. [2022-07-19 23:23:06,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-07-19 23:23:06,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:23:06,346 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:23:06,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 23:23:06,346 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:23:06,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:23:06,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1715192008, now seen corresponding path program 1 times [2022-07-19 23:23:06,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:23:06,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357754006] [2022-07-19 23:23:06,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:23:06,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:23:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:23:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:23:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:23:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:23:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:23:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 23:23:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 23:23:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:23:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 23:23:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 23:23:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:23:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 23:23:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 23:23:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 23:23:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 23:23:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 23:23:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 23:23:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 23:23:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 23:23:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 23:23:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:23:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:23:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 23:23:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:23:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:23:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:23:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:23:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-19 23:23:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-19 23:23:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-19 23:23:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-07-19 23:23:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-19 23:23:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-07-19 23:23:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-19 23:23:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:06,774 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-19 23:23:06,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:23:06,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357754006] [2022-07-19 23:23:06,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357754006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:23:06,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:23:06,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 23:23:06,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992628165] [2022-07-19 23:23:06,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:23:06,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 23:23:06,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:23:06,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 23:23:06,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:23:06,776 INFO L87 Difference]: Start difference. First operand 6470 states and 9853 transitions. Second operand has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (36), 9 states have call predecessors, (36), 2 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-19 23:23:13,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:23:15,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:23:21,133 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:23:28,471 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:23:30,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:23:33,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:23:33,688 INFO L93 Difference]: Finished difference Result 12992 states and 20609 transitions. [2022-07-19 23:23:33,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 23:23:33,688 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (36), 9 states have call predecessors, (36), 2 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) Word has length 266 [2022-07-19 23:23:33,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:23:33,722 INFO L225 Difference]: With dead ends: 12992 [2022-07-19 23:23:33,723 INFO L226 Difference]: Without dead ends: 11063 [2022-07-19 23:23:33,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2022-07-19 23:23:33,734 INFO L413 NwaCegarLoop]: 4458 mSDtfsCounter, 6913 mSDsluCounter, 19065 mSDsCounter, 0 mSdLazyCounter, 14885 mSolverCounterSat, 2780 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6915 SdHoareTripleChecker+Valid, 23523 SdHoareTripleChecker+Invalid, 17669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2780 IncrementalHoareTripleChecker+Valid, 14885 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:23:33,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6915 Valid, 23523 Invalid, 17669 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2780 Valid, 14885 Invalid, 4 Unknown, 0 Unchecked, 26.0s Time] [2022-07-19 23:23:33,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11063 states. [2022-07-19 23:23:34,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11063 to 6464. [2022-07-19 23:23:34,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6464 states, 5284 states have (on average 1.4780469341408025) internal successors, (7810), 5303 states have internal predecessors, (7810), 1011 states have call successors, (1011), 166 states have call predecessors, (1011), 168 states have return successors, (1020), 1016 states have call predecessors, (1020), 1004 states have call successors, (1020) [2022-07-19 23:23:34,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6464 states to 6464 states and 9841 transitions. [2022-07-19 23:23:34,062 INFO L78 Accepts]: Start accepts. Automaton has 6464 states and 9841 transitions. Word has length 266 [2022-07-19 23:23:34,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:23:34,062 INFO L495 AbstractCegarLoop]: Abstraction has 6464 states and 9841 transitions. [2022-07-19 23:23:34,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (36), 9 states have call predecessors, (36), 2 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-19 23:23:34,063 INFO L276 IsEmpty]: Start isEmpty. Operand 6464 states and 9841 transitions. [2022-07-19 23:23:34,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-07-19 23:23:34,073 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:23:34,073 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:23:34,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 23:23:34,073 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:23:34,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:23:34,074 INFO L85 PathProgramCache]: Analyzing trace with hash 885064232, now seen corresponding path program 1 times [2022-07-19 23:23:34,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:23:34,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984632567] [2022-07-19 23:23:34,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:23:34,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:23:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:23:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:23:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:23:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:23:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:23:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 23:23:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 23:23:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:23:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 23:23:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 23:23:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:23:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 23:23:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 23:23:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 23:23:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 23:23:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 23:23:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 23:23:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 23:23:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 23:23:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 23:23:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:23:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:23:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 23:23:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:23:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:23:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:23:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:23:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-19 23:23:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-19 23:23:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-19 23:23:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-07-19 23:23:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-07-19 23:23:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-19 23:23:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:23:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-19 23:23:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:34,555 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-19 23:23:34,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:23:34,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984632567] [2022-07-19 23:23:34,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984632567] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:23:34,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994728036] [2022-07-19 23:23:34,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:23:34,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:23:34,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:23:34,558 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:23:34,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 23:23:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:23:35,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 3744 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 23:23:35,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:23:35,578 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-19 23:23:35,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:23:35,764 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-19 23:23:35,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994728036] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:23:35,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 23:23:35,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 13 [2022-07-19 23:23:35,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099270659] [2022-07-19 23:23:35,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 23:23:35,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 23:23:35,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:23:35,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 23:23:35,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:23:35,767 INFO L87 Difference]: Start difference. First operand 6464 states and 9841 transitions. Second operand has 13 states, 13 states have (on average 19.46153846153846) internal successors, (253), 5 states have internal predecessors, (253), 4 states have call successors, (73), 10 states have call predecessors, (73), 2 states have return successors, (63), 4 states have call predecessors, (63), 4 states have call successors, (63) [2022-07-19 23:23:42,520 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:23:44,555 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:23:50,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:23:57,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:23:59,419 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:24:01,458 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:24:03,499 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:24:08,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:24:08,030 INFO L93 Difference]: Finished difference Result 16536 states and 25992 transitions. [2022-07-19 23:24:08,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 23:24:08,031 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 19.46153846153846) internal successors, (253), 5 states have internal predecessors, (253), 4 states have call successors, (73), 10 states have call predecessors, (73), 2 states have return successors, (63), 4 states have call predecessors, (63), 4 states have call successors, (63) Word has length 269 [2022-07-19 23:24:08,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:24:08,071 INFO L225 Difference]: With dead ends: 16536 [2022-07-19 23:24:08,071 INFO L226 Difference]: Without dead ends: 10125 [2022-07-19 23:24:08,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 605 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-07-19 23:24:08,093 INFO L413 NwaCegarLoop]: 3348 mSDtfsCounter, 7353 mSDsluCounter, 10639 mSDsCounter, 0 mSdLazyCounter, 13519 mSolverCounterSat, 3296 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7822 SdHoareTripleChecker+Valid, 13987 SdHoareTripleChecker+Invalid, 16822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3296 IncrementalHoareTripleChecker+Valid, 13519 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:24:08,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7822 Valid, 13987 Invalid, 16822 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3296 Valid, 13519 Invalid, 7 Unknown, 0 Unchecked, 31.3s Time] [2022-07-19 23:24:08,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10125 states. [2022-07-19 23:24:08,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10125 to 9220. [2022-07-19 23:24:08,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9220 states, 7640 states have (on average 1.493717277486911) internal successors, (11412), 7655 states have internal predecessors, (11412), 1411 states have call successors, (1411), 166 states have call predecessors, (1411), 168 states have return successors, (1424), 1420 states have call predecessors, (1424), 1404 states have call successors, (1424) [2022-07-19 23:24:08,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9220 states to 9220 states and 14247 transitions. [2022-07-19 23:24:08,585 INFO L78 Accepts]: Start accepts. Automaton has 9220 states and 14247 transitions. Word has length 269 [2022-07-19 23:24:08,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:24:08,585 INFO L495 AbstractCegarLoop]: Abstraction has 9220 states and 14247 transitions. [2022-07-19 23:24:08,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.46153846153846) internal successors, (253), 5 states have internal predecessors, (253), 4 states have call successors, (73), 10 states have call predecessors, (73), 2 states have return successors, (63), 4 states have call predecessors, (63), 4 states have call successors, (63) [2022-07-19 23:24:08,586 INFO L276 IsEmpty]: Start isEmpty. Operand 9220 states and 14247 transitions. [2022-07-19 23:24:08,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-07-19 23:24:08,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:24:08,599 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:24:08,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 23:24:08,815 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,SelfDestructingSolverStorable20 [2022-07-19 23:24:08,816 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:24:08,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:24:08,816 INFO L85 PathProgramCache]: Analyzing trace with hash 676991716, now seen corresponding path program 1 times [2022-07-19 23:24:08,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:24:08,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695138654] [2022-07-19 23:24:08,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:24:08,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:24:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:08,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:24:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 23:24:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:24:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 23:24:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 23:24:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 23:24:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 23:24:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 23:24:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 23:24:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 23:24:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 23:24:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 23:24:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 23:24:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 23:24:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 23:24:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 23:24:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 23:24:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 23:24:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 23:24:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 23:24:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:24:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:24:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 23:24:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 23:24:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 23:24:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:24:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:24:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-19 23:24:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-19 23:24:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-19 23:24:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-07-19 23:24:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-19 23:24:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-19 23:24:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-07-19 23:24:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-07-19 23:24:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-19 23:24:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-07-19 23:24:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:24:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-07-19 23:24:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:24:09,234 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-19 23:24:09,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:24:09,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695138654] [2022-07-19 23:24:09,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695138654] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:24:09,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:24:09,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 23:24:09,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614311865] [2022-07-19 23:24:09,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:24:09,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 23:24:09,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:24:09,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 23:24:09,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-07-19 23:24:09,237 INFO L87 Difference]: Start difference. First operand 9220 states and 14247 transitions. Second operand has 12 states, 12 states have (on average 14.833333333333334) internal successors, (178), 4 states have internal predecessors, (178), 3 states have call successors, (41), 10 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-07-19 23:24:16,653 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:24:18,687 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:24:20,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:24:22,251 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []