./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 32c3d0de0693c88d7932ff8b6e02d1235a8aa90cfbd4ebc203b8adf917998be1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 00:51:08,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 00:51:08,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 00:51:09,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 00:51:09,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 00:51:09,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 00:51:09,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 00:51:09,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 00:51:09,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 00:51:09,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 00:51:09,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 00:51:09,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 00:51:09,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 00:51:09,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 00:51:09,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 00:51:09,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 00:51:09,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 00:51:09,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 00:51:09,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 00:51:09,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 00:51:09,051 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 00:51:09,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 00:51:09,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 00:51:09,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 00:51:09,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 00:51:09,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 00:51:09,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 00:51:09,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 00:51:09,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 00:51:09,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 00:51:09,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 00:51:09,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 00:51:09,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 00:51:09,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 00:51:09,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 00:51:09,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 00:51:09,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 00:51:09,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 00:51:09,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 00:51:09,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 00:51:09,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 00:51:09,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 00:51:09,072 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-23 00:51:09,096 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 00:51:09,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 00:51:09,097 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 00:51:09,097 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 00:51:09,097 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 00:51:09,098 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 00:51:09,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 00:51:09,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 00:51:09,098 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 00:51:09,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 00:51:09,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 00:51:09,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 00:51:09,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 00:51:09,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 00:51:09,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 00:51:09,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 00:51:09,101 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 00:51:09,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 00:51:09,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 00:51:09,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 00:51:09,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 00:51:09,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 00:51:09,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 00:51:09,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 00:51:09,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 00:51:09,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 00:51:09,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 00:51:09,104 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-23 00:51:09,104 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-23 00:51:09,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 00:51:09,104 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32c3d0de0693c88d7932ff8b6e02d1235a8aa90cfbd4ebc203b8adf917998be1 [2022-07-23 00:51:09,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 00:51:09,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 00:51:09,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 00:51:09,299 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 00:51:09,300 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 00:51:09,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2022-07-23 00:51:09,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edbff75fe/0bc8a931443048779daabcfcc3947d13/FLAG2148d467d [2022-07-23 00:51:09,975 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 00:51:09,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2022-07-23 00:51:10,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edbff75fe/0bc8a931443048779daabcfcc3947d13/FLAG2148d467d [2022-07-23 00:51:10,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edbff75fe/0bc8a931443048779daabcfcc3947d13 [2022-07-23 00:51:10,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 00:51:10,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 00:51:10,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 00:51:10,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 00:51:10,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 00:51:10,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 12:51:10" (1/1) ... [2022-07-23 00:51:10,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fda599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:51:10, skipping insertion in model container [2022-07-23 00:51:10,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 12:51:10" (1/1) ... [2022-07-23 00:51:10,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 00:51:10,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 00:51:10,894 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i[192198,192211] [2022-07-23 00:51:10,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 00:51:11,091 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 00:51:11,269 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i[192198,192211] [2022-07-23 00:51:11,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 00:51:11,449 INFO L208 MainTranslator]: Completed translation [2022-07-23 00:51:11,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:51:11 WrapperNode [2022-07-23 00:51:11,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 00:51:11,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 00:51:11,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 00:51:11,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 00:51:11,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:51:11" (1/1) ... [2022-07-23 00:51:11,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:51:11" (1/1) ... [2022-07-23 00:51:11,730 INFO L137 Inliner]: procedures = 165, calls = 5249, calls flagged for inlining = 57, calls inlined = 52, statements flattened = 6390 [2022-07-23 00:51:11,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 00:51:11,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 00:51:11,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 00:51:11,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 00:51:11,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:51:11" (1/1) ... [2022-07-23 00:51:11,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:51:11" (1/1) ... [2022-07-23 00:51:11,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:51:11" (1/1) ... [2022-07-23 00:51:11,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:51:11" (1/1) ... [2022-07-23 00:51:11,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:51:11" (1/1) ... [2022-07-23 00:51:11,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:51:11" (1/1) ... [2022-07-23 00:51:11,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:51:11" (1/1) ... [2022-07-23 00:51:11,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 00:51:11,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 00:51:11,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 00:51:11,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 00:51:11,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:51:11" (1/1) ... [2022-07-23 00:51:11,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 00:51:11,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 00:51:11,948 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) [2022-07-23 00:51:11,971 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 [2022-07-23 00:51:11,995 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_while_busy [2022-07-23 00:51:11,996 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_while_busy [2022-07-23 00:51:11,996 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-23 00:51:11,996 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-23 00:51:11,996 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_for_read [2022-07-23 00:51:11,996 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_for_read [2022-07-23 00:51:11,996 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-23 00:51:11,996 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-23 00:51:11,996 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2022-07-23 00:51:11,996 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2022-07-23 00:51:11,997 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_remove [2022-07-23 00:51:11,997 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_remove [2022-07-23 00:51:11,997 INFO L130 BoogieDeclarations]: Found specification of procedure dmi_get_system_info [2022-07-23 00:51:11,997 INFO L138 BoogieDeclarations]: Found implementation of procedure dmi_get_system_info [2022-07-23 00:51:11,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-23 00:51:11,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-23 00:51:11,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-23 00:51:11,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-23 00:51:11,997 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-23 00:51:11,998 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read [2022-07-23 00:51:11,998 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read [2022-07-23 00:51:11,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-23 00:51:11,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-23 00:51:11,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-23 00:51:11,998 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-23 00:51:11,998 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-23 00:51:11,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-23 00:51:11,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-23 00:51:11,999 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_probe [2022-07-23 00:51:11,999 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_probe [2022-07-23 00:51:11,999 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-07-23 00:51:11,999 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-07-23 00:51:11,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2022-07-23 00:51:11,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2022-07-23 00:51:11,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-23 00:51:11,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-23 00:51:12,000 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_suspend [2022-07-23 00:51:12,000 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_suspend [2022-07-23 00:51:12,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-23 00:51:12,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-23 00:51:12,000 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-23 00:51:12,000 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-23 00:51:12,000 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read_increment_offset [2022-07-23 00:51:12,000 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read_increment_offset [2022-07-23 00:51:12,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 00:51:12,001 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2022-07-23 00:51:12,001 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2022-07-23 00:51:12,001 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-23 00:51:12,001 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-23 00:51:12,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 00:51:12,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 00:51:12,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 00:51:12,001 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_update_device [2022-07-23 00:51:12,001 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_update_device [2022-07-23 00:51:12,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 00:51:12,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-23 00:51:12,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-23 00:51:12,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 00:51:12,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-23 00:51:12,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2022-07-23 00:51:12,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2022-07-23 00:51:12,002 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2022-07-23 00:51:12,002 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-07-23 00:51:12,003 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-07-23 00:51:12,003 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-07-23 00:51:12,003 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-07-23 00:51:12,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 00:51:12,003 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-07-23 00:51:12,003 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-07-23 00:51:12,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 00:51:12,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 00:51:12,004 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_resume [2022-07-23 00:51:12,004 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_resume [2022-07-23 00:51:12,004 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-23 00:51:12,004 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-23 00:51:12,312 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 00:51:12,313 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 00:51:14,818 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-23 00:51:22,087 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 00:51:22,097 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 00:51:22,097 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-23 00:51:22,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 12:51:22 BoogieIcfgContainer [2022-07-23 00:51:22,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 00:51:22,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 00:51:22,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 00:51:22,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 00:51:22,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 12:51:10" (1/3) ... [2022-07-23 00:51:22,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac2bafe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 12:51:22, skipping insertion in model container [2022-07-23 00:51:22,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:51:11" (2/3) ... [2022-07-23 00:51:22,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac2bafe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 12:51:22, skipping insertion in model container [2022-07-23 00:51:22,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 12:51:22" (3/3) ... [2022-07-23 00:51:22,106 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2022-07-23 00:51:22,116 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 00:51:22,117 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-23 00:51:22,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 00:51:22,161 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@31888f1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6e8800c9 [2022-07-23 00:51:22,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-23 00:51:22,168 INFO L276 IsEmpty]: Start isEmpty. Operand has 559 states, 426 states have (on average 1.4366197183098592) internal successors, (612), 439 states have internal predecessors, (612), 101 states have call successors, (101), 31 states have call predecessors, (101), 30 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-23 00:51:22,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-23 00:51:22,180 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:51:22,180 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, 1, 1] [2022-07-23 00:51:22,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:51:22,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:51:22,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1970887230, now seen corresponding path program 1 times [2022-07-23 00:51:22,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:51:22,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692962022] [2022-07-23 00:51:22,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:51:22,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:51:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:23,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-23 00:51:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:23,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 00:51:23,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:51:23,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692962022] [2022-07-23 00:51:23,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692962022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:51:23,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:51:23,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 00:51:23,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056429541] [2022-07-23 00:51:23,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:51:23,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 00:51:23,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:51:23,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 00:51:23,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 00:51:23,075 INFO L87 Difference]: Start difference. First operand has 559 states, 426 states have (on average 1.4366197183098592) internal successors, (612), 439 states have internal predecessors, (612), 101 states have call successors, (101), 31 states have call predecessors, (101), 30 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 00:51:23,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:51:23,451 INFO L93 Difference]: Finished difference Result 1560 states and 2283 transitions. [2022-07-23 00:51:23,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 00:51:23,453 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), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-07-23 00:51:23,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:51:23,475 INFO L225 Difference]: With dead ends: 1560 [2022-07-23 00:51:23,475 INFO L226 Difference]: Without dead ends: 987 [2022-07-23 00:51:23,482 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 [2022-07-23 00:51:23,486 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 616 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 00:51:23,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 1640 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 00:51:23,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2022-07-23 00:51:23,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 973. [2022-07-23 00:51:23,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 740 states have (on average 1.4) internal successors, (1036), 751 states have internal predecessors, (1036), 176 states have call successors, (176), 57 states have call predecessors, (176), 56 states have return successors, (171), 170 states have call predecessors, (171), 171 states have call successors, (171) [2022-07-23 00:51:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1383 transitions. [2022-07-23 00:51:23,574 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1383 transitions. Word has length 23 [2022-07-23 00:51:23,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:51:23,574 INFO L495 AbstractCegarLoop]: Abstraction has 973 states and 1383 transitions. [2022-07-23 00:51:23,574 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), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 00:51:23,574 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1383 transitions. [2022-07-23 00:51:23,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-23 00:51:23,576 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:51:23,576 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] [2022-07-23 00:51:23,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 00:51:23,577 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:51:23,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:51:23,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1089981821, now seen corresponding path program 1 times [2022-07-23 00:51:23,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:51:23,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943955920] [2022-07-23 00:51:23,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:51:23,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:51:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:24,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-23 00:51:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 00:51:24,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:51:24,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943955920] [2022-07-23 00:51:24,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943955920] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:51:24,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:51:24,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 00:51:24,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903442848] [2022-07-23 00:51:24,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:51:24,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 00:51:24,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:51:24,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 00:51:24,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 00:51:24,063 INFO L87 Difference]: Start difference. First operand 973 states and 1383 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 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) [2022-07-23 00:51:24,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:51:24,324 INFO L93 Difference]: Finished difference Result 2750 states and 3913 transitions. [2022-07-23 00:51:24,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 00:51:24,325 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), 1 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 [2022-07-23 00:51:24,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:51:24,335 INFO L225 Difference]: With dead ends: 2750 [2022-07-23 00:51:24,335 INFO L226 Difference]: Without dead ends: 1780 [2022-07-23 00:51:24,338 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 [2022-07-23 00:51:24,342 INFO L413 NwaCegarLoop]: 1342 mSDtfsCounter, 757 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 00:51:24,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 2023 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 00:51:24,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2022-07-23 00:51:24,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1771. [2022-07-23 00:51:24,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1340 states have (on average 1.4014925373134328) internal successors, (1878), 1356 states have internal predecessors, (1878), 323 states have call successors, (323), 108 states have call predecessors, (323), 107 states have return successors, (318), 318 states have call predecessors, (318), 318 states have call successors, (318) [2022-07-23 00:51:24,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2519 transitions. [2022-07-23 00:51:24,399 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2519 transitions. Word has length 21 [2022-07-23 00:51:24,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:51:24,400 INFO L495 AbstractCegarLoop]: Abstraction has 1771 states and 2519 transitions. [2022-07-23 00:51:24,400 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), 1 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) [2022-07-23 00:51:24,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2519 transitions. [2022-07-23 00:51:24,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-23 00:51:24,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:51:24,401 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:51:24,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-23 00:51:24,402 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:51:24,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:51:24,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2140487856, now seen corresponding path program 1 times [2022-07-23 00:51:24,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:51:24,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971945271] [2022-07-23 00:51:24,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:51:24,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:51:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:24,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:51:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:24,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:51:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:24,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 00:51:24,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:51:24,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971945271] [2022-07-23 00:51:24,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971945271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:51:24,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:51:24,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 00:51:24,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496702802] [2022-07-23 00:51:24,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:51:24,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 00:51:24,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:51:24,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 00:51:24,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:51:24,927 INFO L87 Difference]: Start difference. First operand 1771 states and 2519 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 00:51:26,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:51:26,758 INFO L93 Difference]: Finished difference Result 4844 states and 7178 transitions. [2022-07-23 00:51:26,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 00:51:26,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-07-23 00:51:26,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:51:26,772 INFO L225 Difference]: With dead ends: 4844 [2022-07-23 00:51:26,772 INFO L226 Difference]: Without dead ends: 3076 [2022-07-23 00:51:26,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-23 00:51:26,778 INFO L413 NwaCegarLoop]: 1337 mSDtfsCounter, 915 mSDsluCounter, 4985 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 6322 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-23 00:51:26,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 6322 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-23 00:51:26,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2022-07-23 00:51:26,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 1793. [2022-07-23 00:51:26,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1358 states have (on average 1.4005891016200294) internal successors, (1902), 1374 states have internal predecessors, (1902), 327 states have call successors, (327), 108 states have call predecessors, (327), 107 states have return successors, (322), 322 states have call predecessors, (322), 322 states have call successors, (322) [2022-07-23 00:51:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2551 transitions. [2022-07-23 00:51:26,850 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2551 transitions. Word has length 32 [2022-07-23 00:51:26,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:51:26,853 INFO L495 AbstractCegarLoop]: Abstraction has 1793 states and 2551 transitions. [2022-07-23 00:51:26,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 00:51:26,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2551 transitions. [2022-07-23 00:51:26,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-23 00:51:26,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:51:26,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:51:26,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-23 00:51:26,858 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:51:26,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:51:26,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1935624722, now seen corresponding path program 1 times [2022-07-23 00:51:26,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:51:26,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404990436] [2022-07-23 00:51:26,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:51:26,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:51:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:27,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:51:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:27,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:51:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:27,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 00:51:27,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:51:27,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404990436] [2022-07-23 00:51:27,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404990436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:51:27,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:51:27,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 00:51:27,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965734627] [2022-07-23 00:51:27,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:51:27,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 00:51:27,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:51:27,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 00:51:27,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 00:51:27,364 INFO L87 Difference]: Start difference. First operand 1793 states and 2551 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 00:51:28,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:51:28,065 INFO L93 Difference]: Finished difference Result 1877 states and 2700 transitions. [2022-07-23 00:51:28,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 00:51:28,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-07-23 00:51:28,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:51:28,075 INFO L225 Difference]: With dead ends: 1877 [2022-07-23 00:51:28,075 INFO L226 Difference]: Without dead ends: 1874 [2022-07-23 00:51:28,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 00:51:28,077 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 805 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-23 00:51:28,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 1240 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-23 00:51:28,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2022-07-23 00:51:28,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1792. [2022-07-23 00:51:28,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1358 states have (on average 1.3998527245949925) internal successors, (1901), 1373 states have internal predecessors, (1901), 326 states have call successors, (326), 108 states have call predecessors, (326), 107 states have return successors, (322), 322 states have call predecessors, (322), 322 states have call successors, (322) [2022-07-23 00:51:28,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2549 transitions. [2022-07-23 00:51:28,144 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2549 transitions. Word has length 32 [2022-07-23 00:51:28,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:51:28,144 INFO L495 AbstractCegarLoop]: Abstraction has 1792 states and 2549 transitions. [2022-07-23 00:51:28,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 00:51:28,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2549 transitions. [2022-07-23 00:51:28,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-23 00:51:28,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:51:28,146 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:51:28,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-23 00:51:28,146 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:51:28,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:51:28,146 INFO L85 PathProgramCache]: Analyzing trace with hash 125104557, now seen corresponding path program 1 times [2022-07-23 00:51:28,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:51:28,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358113027] [2022-07-23 00:51:28,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:51:28,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:51:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:28,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:51:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:28,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:51:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:28,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 00:51:28,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:51:28,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358113027] [2022-07-23 00:51:28,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358113027] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:51:28,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:51:28,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 00:51:28,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850605339] [2022-07-23 00:51:28,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:51:28,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 00:51:28,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:51:28,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 00:51:28,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 00:51:28,644 INFO L87 Difference]: Start difference. First operand 1792 states and 2549 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 00:51:29,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:51:29,280 INFO L93 Difference]: Finished difference Result 1876 states and 2698 transitions. [2022-07-23 00:51:29,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 00:51:29,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-07-23 00:51:29,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:51:29,289 INFO L225 Difference]: With dead ends: 1876 [2022-07-23 00:51:29,289 INFO L226 Difference]: Without dead ends: 1873 [2022-07-23 00:51:29,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 00:51:29,291 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 802 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-23 00:51:29,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1237 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-23 00:51:29,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2022-07-23 00:51:29,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1791. [2022-07-23 00:51:29,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1791 states, 1358 states have (on average 1.3991163475699557) internal successors, (1900), 1372 states have internal predecessors, (1900), 325 states have call successors, (325), 108 states have call predecessors, (325), 107 states have return successors, (322), 322 states have call predecessors, (322), 322 states have call successors, (322) [2022-07-23 00:51:29,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2547 transitions. [2022-07-23 00:51:29,339 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2547 transitions. Word has length 33 [2022-07-23 00:51:29,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:51:29,340 INFO L495 AbstractCegarLoop]: Abstraction has 1791 states and 2547 transitions. [2022-07-23 00:51:29,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 00:51:29,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2547 transitions. [2022-07-23 00:51:29,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-23 00:51:29,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:51:29,341 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:51:29,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-23 00:51:29,341 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:51:29,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:51:29,342 INFO L85 PathProgramCache]: Analyzing trace with hash -416792367, now seen corresponding path program 1 times [2022-07-23 00:51:29,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:51:29,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902202147] [2022-07-23 00:51:29,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:51:29,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:51:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:29,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:51:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:29,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:51:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:29,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 00:51:29,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:51:29,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902202147] [2022-07-23 00:51:29,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902202147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:51:29,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:51:29,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 00:51:29,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047112658] [2022-07-23 00:51:29,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:51:29,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 00:51:29,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:51:29,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 00:51:29,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 00:51:29,758 INFO L87 Difference]: Start difference. First operand 1791 states and 2547 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 00:51:30,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:51:30,725 INFO L93 Difference]: Finished difference Result 5089 states and 7303 transitions. [2022-07-23 00:51:30,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 00:51:30,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-07-23 00:51:30,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:51:30,742 INFO L225 Difference]: With dead ends: 5089 [2022-07-23 00:51:30,742 INFO L226 Difference]: Without dead ends: 3289 [2022-07-23 00:51:30,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 00:51:30,751 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 803 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-23 00:51:30,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1846 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-23 00:51:30,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2022-07-23 00:51:30,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 3186. [2022-07-23 00:51:30,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3186 states, 2415 states have (on average 1.3958592132505176) internal successors, (3371), 2452 states have internal predecessors, (3371), 589 states have call successors, (589), 195 states have call predecessors, (589), 181 states have return successors, (583), 562 states have call predecessors, (583), 579 states have call successors, (583) [2022-07-23 00:51:30,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 4543 transitions. [2022-07-23 00:51:30,846 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 4543 transitions. Word has length 34 [2022-07-23 00:51:30,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:51:30,846 INFO L495 AbstractCegarLoop]: Abstraction has 3186 states and 4543 transitions. [2022-07-23 00:51:30,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 00:51:30,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 4543 transitions. [2022-07-23 00:51:30,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-23 00:51:30,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:51:30,849 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-23 00:51:30,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-23 00:51:30,849 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:51:30,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:51:30,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1540623621, now seen corresponding path program 1 times [2022-07-23 00:51:30,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:51:30,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182404826] [2022-07-23 00:51:30,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:51:30,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:51:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:31,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:51:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:31,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:51:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:31,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-23 00:51:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:31,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:51:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:31,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:51:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:31,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-23 00:51:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:31,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 00:51:31,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:51:31,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182404826] [2022-07-23 00:51:31,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182404826] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:51:31,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:51:31,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 00:51:31,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329512320] [2022-07-23 00:51:31,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:51:31,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 00:51:31,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:51:31,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 00:51:31,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-23 00:51:31,322 INFO L87 Difference]: Start difference. First operand 3186 states and 4543 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-23 00:51:34,378 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 [] [2022-07-23 00:51:36,558 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 [] [2022-07-23 00:51:37,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:51:37,810 INFO L93 Difference]: Finished difference Result 8718 states and 12635 transitions. [2022-07-23 00:51:37,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 00:51:37,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 66 [2022-07-23 00:51:37,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:51:37,832 INFO L225 Difference]: With dead ends: 8718 [2022-07-23 00:51:37,833 INFO L226 Difference]: Without dead ends: 5535 [2022-07-23 00:51:37,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-23 00:51:37,841 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 1103 mSDsluCounter, 1628 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 568 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 2619 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-07-23 00:51:37,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1205 Valid, 2619 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 915 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2022-07-23 00:51:37,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5535 states. [2022-07-23 00:51:37,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5535 to 4738. [2022-07-23 00:51:37,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4738 states, 3613 states have (on average 1.3874896208137282) internal successors, (5013), 3662 states have internal predecessors, (5013), 857 states have call successors, (857), 285 states have call predecessors, (857), 267 states have return successors, (853), 826 states have call predecessors, (853), 847 states have call successors, (853) [2022-07-23 00:51:37,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4738 states to 4738 states and 6723 transitions. [2022-07-23 00:51:37,981 INFO L78 Accepts]: Start accepts. Automaton has 4738 states and 6723 transitions. Word has length 66 [2022-07-23 00:51:37,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:51:37,981 INFO L495 AbstractCegarLoop]: Abstraction has 4738 states and 6723 transitions. [2022-07-23 00:51:37,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-23 00:51:37,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4738 states and 6723 transitions. [2022-07-23 00:51:37,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-23 00:51:37,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:51:37,984 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, 1, 1, 1] [2022-07-23 00:51:37,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-23 00:51:37,985 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:51:37,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:51:37,985 INFO L85 PathProgramCache]: Analyzing trace with hash 127935254, now seen corresponding path program 1 times [2022-07-23 00:51:37,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:51:37,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387725124] [2022-07-23 00:51:37,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:51:37,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:51:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:38,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-23 00:51:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:38,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-23 00:51:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:38,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-23 00:51:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:38,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:51:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:38,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 00:51:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:38,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:51:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:38,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-23 00:51:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:38,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-23 00:51:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:38,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-23 00:51:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:38,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-23 00:51:38,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:51:38,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387725124] [2022-07-23 00:51:38,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387725124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:51:38,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:51:38,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 00:51:38,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366459990] [2022-07-23 00:51:38,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:51:38,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 00:51:38,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:51:38,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 00:51:38,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-23 00:51:38,372 INFO L87 Difference]: Start difference. First operand 4738 states and 6723 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-23 00:51:41,365 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 [] [2022-07-23 00:51:42,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:51:42,536 INFO L93 Difference]: Finished difference Result 11124 states and 15869 transitions. [2022-07-23 00:51:42,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-23 00:51:42,537 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2022-07-23 00:51:42,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:51:42,565 INFO L225 Difference]: With dead ends: 11124 [2022-07-23 00:51:42,565 INFO L226 Difference]: Without dead ends: 6389 [2022-07-23 00:51:42,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-23 00:51:42,579 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 756 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 370 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-23 00:51:42,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 2140 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 1102 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-07-23 00:51:42,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6389 states. [2022-07-23 00:51:42,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6389 to 6142. [2022-07-23 00:51:42,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6142 states, 4803 states have (on average 1.402665001041016) internal successors, (6737), 4868 states have internal predecessors, (6737), 995 states have call successors, (995), 361 states have call predecessors, (995), 343 states have return successors, (991), 948 states have call predecessors, (991), 979 states have call successors, (991) [2022-07-23 00:51:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 8723 transitions. [2022-07-23 00:51:42,777 INFO L78 Accepts]: Start accepts. Automaton has 6142 states and 8723 transitions. Word has length 85 [2022-07-23 00:51:42,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:51:42,777 INFO L495 AbstractCegarLoop]: Abstraction has 6142 states and 8723 transitions. [2022-07-23 00:51:42,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-23 00:51:42,778 INFO L276 IsEmpty]: Start isEmpty. Operand 6142 states and 8723 transitions. [2022-07-23 00:51:42,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-23 00:51:42,781 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:51:42,781 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-23 00:51:42,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-23 00:51:42,782 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:51:42,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:51:42,782 INFO L85 PathProgramCache]: Analyzing trace with hash 986755271, now seen corresponding path program 1 times [2022-07-23 00:51:42,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:51:42,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140839912] [2022-07-23 00:51:42,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:51:42,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:51:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:43,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:51:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:43,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:51:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:43,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-23 00:51:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:43,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:51:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:43,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:51:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:43,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-23 00:51:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:43,226 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-23 00:51:43,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:51:43,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140839912] [2022-07-23 00:51:43,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140839912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:51:43,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:51:43,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 00:51:43,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357655017] [2022-07-23 00:51:43,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:51:43,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 00:51:43,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:51:43,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 00:51:43,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-23 00:51:43,229 INFO L87 Difference]: Start difference. First operand 6142 states and 8723 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-23 00:51:46,769 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:51:49,276 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:51:51,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:51:51,190 INFO L93 Difference]: Finished difference Result 15372 states and 22173 transitions. [2022-07-23 00:51:51,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 00:51:51,190 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 86 [2022-07-23 00:51:51,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:51:51,247 INFO L225 Difference]: With dead ends: 15372 [2022-07-23 00:51:51,247 INFO L226 Difference]: Without dead ends: 9233 [2022-07-23 00:51:51,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-23 00:51:51,272 INFO L413 NwaCegarLoop]: 1371 mSDtfsCounter, 820 mSDsluCounter, 2892 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 298 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 4263 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-07-23 00:51:51,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 4263 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1367 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2022-07-23 00:51:51,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9233 states. [2022-07-23 00:51:51,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9233 to 8128. [2022-07-23 00:51:51,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8128 states, 6388 states have (on average 1.3963681903569192) internal successors, (8920), 6464 states have internal predecessors, (8920), 1289 states have call successors, (1289), 469 states have call predecessors, (1289), 450 states have return successors, (1292), 1242 states have call predecessors, (1292), 1276 states have call successors, (1292) [2022-07-23 00:51:51,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 11501 transitions. [2022-07-23 00:51:51,568 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 11501 transitions. Word has length 86 [2022-07-23 00:51:51,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:51:51,569 INFO L495 AbstractCegarLoop]: Abstraction has 8128 states and 11501 transitions. [2022-07-23 00:51:51,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-23 00:51:51,569 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 11501 transitions. [2022-07-23 00:51:51,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-23 00:51:51,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:51:51,577 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2022-07-23 00:51:51,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-23 00:51:51,578 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:51:51,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:51:51,578 INFO L85 PathProgramCache]: Analyzing trace with hash -216719008, now seen corresponding path program 1 times [2022-07-23 00:51:51,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:51:51,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551898412] [2022-07-23 00:51:51,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:51:51,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:51:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:52,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:51:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:52,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:51:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:52,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-23 00:51:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:52,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:51:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:52,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:51:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:52,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-23 00:51:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:52,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:51:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:52,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:51:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:52,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:51:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:52,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-23 00:51:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:51:52,153 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-23 00:51:52,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:51:52,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551898412] [2022-07-23 00:51:52,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551898412] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:51:52,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:51:52,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 00:51:52,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835080297] [2022-07-23 00:51:52,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:51:52,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 00:51:52,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:51:52,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 00:51:52,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:51:52,156 INFO L87 Difference]: Start difference. First operand 8128 states and 11501 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-23 00:51:55,575 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:51:57,605 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:51:59,960 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 [] [2022-07-23 00:52:03,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:52:03,017 INFO L93 Difference]: Finished difference Result 19602 states and 28161 transitions. [2022-07-23 00:52:03,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-23 00:52:03,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 117 [2022-07-23 00:52:03,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:52:03,140 INFO L225 Difference]: With dead ends: 19602 [2022-07-23 00:52:03,141 INFO L226 Difference]: Without dead ends: 11477 [2022-07-23 00:52:03,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-23 00:52:03,158 INFO L413 NwaCegarLoop]: 1266 mSDtfsCounter, 1075 mSDsluCounter, 2630 mSDsCounter, 0 mSdLazyCounter, 2331 mSolverCounterSat, 645 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 3896 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 2331 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-07-23 00:52:03,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 3896 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 2331 Invalid, 3 Unknown, 0 Unchecked, 10.5s Time] [2022-07-23 00:52:03,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11477 states. [2022-07-23 00:52:03,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11477 to 10110. [2022-07-23 00:52:03,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10110 states, 7968 states have (on average 1.3928212851405624) internal successors, (11098), 8058 states have internal predecessors, (11098), 1587 states have call successors, (1587), 575 states have call predecessors, (1587), 554 states have return successors, (1594), 1536 states have call predecessors, (1594), 1574 states have call successors, (1594) [2022-07-23 00:52:03,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10110 states to 10110 states and 14279 transitions. [2022-07-23 00:52:03,427 INFO L78 Accepts]: Start accepts. Automaton has 10110 states and 14279 transitions. Word has length 117 [2022-07-23 00:52:03,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:52:03,429 INFO L495 AbstractCegarLoop]: Abstraction has 10110 states and 14279 transitions. [2022-07-23 00:52:03,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-23 00:52:03,429 INFO L276 IsEmpty]: Start isEmpty. Operand 10110 states and 14279 transitions. [2022-07-23 00:52:03,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-23 00:52:03,433 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:52:03,433 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:52:03,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-23 00:52:03,433 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:52:03,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:52:03,434 INFO L85 PathProgramCache]: Analyzing trace with hash 504148532, now seen corresponding path program 1 times [2022-07-23 00:52:03,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:52:03,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982881776] [2022-07-23 00:52:03,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:52:03,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:52:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:03,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:52:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:03,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:03,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-23 00:52:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:03,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:03,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:52:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:03,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 00:52:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:03,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:03,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:52:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:03,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:52:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:03,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-23 00:52:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:03,790 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-23 00:52:03,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:52:03,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982881776] [2022-07-23 00:52:03,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982881776] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:52:03,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:52:03,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 00:52:03,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766254202] [2022-07-23 00:52:03,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:52:03,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 00:52:03,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:52:03,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 00:52:03,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:52:03,793 INFO L87 Difference]: Start difference. First operand 10110 states and 14279 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-23 00:52:07,115 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 [] [2022-07-23 00:52:09,472 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 [] [2022-07-23 00:52:12,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:52:12,050 INFO L93 Difference]: Finished difference Result 23836 states and 34157 transitions. [2022-07-23 00:52:12,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-23 00:52:12,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 119 [2022-07-23 00:52:12,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:52:12,129 INFO L225 Difference]: With dead ends: 23836 [2022-07-23 00:52:12,130 INFO L226 Difference]: Without dead ends: 13729 [2022-07-23 00:52:12,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-23 00:52:12,147 INFO L413 NwaCegarLoop]: 1293 mSDtfsCounter, 1168 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 2003 mSolverCounterSat, 785 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 3406 SdHoareTripleChecker+Invalid, 2790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 785 IncrementalHoareTripleChecker+Valid, 2003 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-07-23 00:52:12,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1236 Valid, 3406 Invalid, 2790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [785 Valid, 2003 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2022-07-23 00:52:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13729 states. [2022-07-23 00:52:12,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13729 to 12092. [2022-07-23 00:52:12,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12092 states, 9548 states have (on average 1.3904482614160034) internal successors, (13276), 9652 states have internal predecessors, (13276), 1885 states have call successors, (1885), 681 states have call predecessors, (1885), 658 states have return successors, (1896), 1830 states have call predecessors, (1896), 1872 states have call successors, (1896) [2022-07-23 00:52:12,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12092 states to 12092 states and 17057 transitions. [2022-07-23 00:52:12,440 INFO L78 Accepts]: Start accepts. Automaton has 12092 states and 17057 transitions. Word has length 119 [2022-07-23 00:52:12,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:52:12,441 INFO L495 AbstractCegarLoop]: Abstraction has 12092 states and 17057 transitions. [2022-07-23 00:52:12,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-23 00:52:12,441 INFO L276 IsEmpty]: Start isEmpty. Operand 12092 states and 17057 transitions. [2022-07-23 00:52:12,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-23 00:52:12,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:52:12,445 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:52:12,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-23 00:52:12,445 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:52:12,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:52:12,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1210000877, now seen corresponding path program 1 times [2022-07-23 00:52:12,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:52:12,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661385811] [2022-07-23 00:52:12,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:52:12,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:52:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:12,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:52:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:12,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:12,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-23 00:52:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:12,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:12,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:52:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:12,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-23 00:52:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:12,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:12,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:52:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:12,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:52:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:12,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-23 00:52:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:12,795 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-23 00:52:12,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:52:12,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661385811] [2022-07-23 00:52:12,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661385811] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:52:12,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:52:12,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 00:52:12,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542182838] [2022-07-23 00:52:12,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:52:12,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 00:52:12,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:52:12,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 00:52:12,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:52:12,797 INFO L87 Difference]: Start difference. First operand 12092 states and 17057 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-23 00:52:16,570 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 [] [2022-07-23 00:52:18,604 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:52:20,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:52:24,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:52:24,322 INFO L93 Difference]: Finished difference Result 28070 states and 40153 transitions. [2022-07-23 00:52:24,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-23 00:52:24,323 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 119 [2022-07-23 00:52:24,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:52:24,388 INFO L225 Difference]: With dead ends: 28070 [2022-07-23 00:52:24,388 INFO L226 Difference]: Without dead ends: 15981 [2022-07-23 00:52:24,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-23 00:52:24,414 INFO L413 NwaCegarLoop]: 1279 mSDtfsCounter, 1072 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 2324 mSolverCounterSat, 644 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 3956 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 2324 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-07-23 00:52:24,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 3956 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 2324 Invalid, 3 Unknown, 0 Unchecked, 10.9s Time] [2022-07-23 00:52:24,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15981 states. [2022-07-23 00:52:24,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15981 to 14074. [2022-07-23 00:52:24,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14074 states, 11128 states have (on average 1.3887491013659239) internal successors, (15454), 11246 states have internal predecessors, (15454), 2183 states have call successors, (2183), 787 states have call predecessors, (2183), 762 states have return successors, (2198), 2124 states have call predecessors, (2198), 2170 states have call successors, (2198) [2022-07-23 00:52:24,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14074 states to 14074 states and 19835 transitions. [2022-07-23 00:52:24,821 INFO L78 Accepts]: Start accepts. Automaton has 14074 states and 19835 transitions. Word has length 119 [2022-07-23 00:52:24,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:52:24,822 INFO L495 AbstractCegarLoop]: Abstraction has 14074 states and 19835 transitions. [2022-07-23 00:52:24,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-23 00:52:24,822 INFO L276 IsEmpty]: Start isEmpty. Operand 14074 states and 19835 transitions. [2022-07-23 00:52:24,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-23 00:52:24,826 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:52:24,826 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:52:24,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-23 00:52:24,827 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:52:24,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:52:24,827 INFO L85 PathProgramCache]: Analyzing trace with hash 278316373, now seen corresponding path program 1 times [2022-07-23 00:52:24,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:52:24,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313361203] [2022-07-23 00:52:24,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:52:24,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:52:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:25,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:52:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:25,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:25,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-23 00:52:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:25,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:25,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:52:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:25,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-23 00:52:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:25,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:25,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:52:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:25,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:52:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:25,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-23 00:52:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:25,311 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-23 00:52:25,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:52:25,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313361203] [2022-07-23 00:52:25,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313361203] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:52:25,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:52:25,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-23 00:52:25,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269703441] [2022-07-23 00:52:25,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:52:25,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 00:52:25,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:52:25,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 00:52:25,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-23 00:52:25,313 INFO L87 Difference]: Start difference. First operand 14074 states and 19835 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-23 00:52:28,678 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:52:30,714 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:52:33,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:52:33,324 INFO L93 Difference]: Finished difference Result 30035 states and 42747 transitions. [2022-07-23 00:52:33,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 00:52:33,325 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 120 [2022-07-23 00:52:33,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:52:33,383 INFO L225 Difference]: With dead ends: 30035 [2022-07-23 00:52:33,383 INFO L226 Difference]: Without dead ends: 15964 [2022-07-23 00:52:33,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-23 00:52:33,419 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 1148 mSDsluCounter, 2172 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 546 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 546 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-07-23 00:52:33,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 2890 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [546 Valid, 1798 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2022-07-23 00:52:33,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15964 states. [2022-07-23 00:52:33,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15964 to 14074. [2022-07-23 00:52:33,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14074 states, 11128 states have (on average 1.388389647735442) internal successors, (15450), 11246 states have internal predecessors, (15450), 2183 states have call successors, (2183), 787 states have call predecessors, (2183), 762 states have return successors, (2198), 2124 states have call predecessors, (2198), 2170 states have call successors, (2198) [2022-07-23 00:52:33,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14074 states to 14074 states and 19831 transitions. [2022-07-23 00:52:33,820 INFO L78 Accepts]: Start accepts. Automaton has 14074 states and 19831 transitions. Word has length 120 [2022-07-23 00:52:33,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:52:33,821 INFO L495 AbstractCegarLoop]: Abstraction has 14074 states and 19831 transitions. [2022-07-23 00:52:33,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-23 00:52:33,821 INFO L276 IsEmpty]: Start isEmpty. Operand 14074 states and 19831 transitions. [2022-07-23 00:52:33,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-23 00:52:33,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:52:33,825 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:52:33,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-23 00:52:33,826 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:52:33,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:52:33,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1220157427, now seen corresponding path program 1 times [2022-07-23 00:52:33,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:52:33,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681213504] [2022-07-23 00:52:33,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:52:33,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:52:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:34,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:52:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:34,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:34,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-23 00:52:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:34,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:34,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:52:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:34,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-23 00:52:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:34,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:34,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:52:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:34,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:52:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:34,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-23 00:52:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-23 00:52:34,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:52:34,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681213504] [2022-07-23 00:52:34,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681213504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:52:34,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:52:34,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-23 00:52:34,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580508051] [2022-07-23 00:52:34,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:52:34,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 00:52:34,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:52:34,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 00:52:34,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-23 00:52:34,266 INFO L87 Difference]: Start difference. First operand 14074 states and 19831 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-23 00:52:37,549 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 [] [2022-07-23 00:52:39,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:52:39,493 INFO L93 Difference]: Finished difference Result 30035 states and 42739 transitions. [2022-07-23 00:52:39,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 00:52:39,493 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 123 [2022-07-23 00:52:39,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:52:39,563 INFO L225 Difference]: With dead ends: 30035 [2022-07-23 00:52:39,564 INFO L226 Difference]: Without dead ends: 15964 [2022-07-23 00:52:39,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-23 00:52:39,592 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 1387 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 815 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 2537 SdHoareTripleChecker+Invalid, 2274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 815 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-23 00:52:39,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 2537 Invalid, 2274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [815 Valid, 1458 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-07-23 00:52:39,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15964 states. [2022-07-23 00:52:39,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15964 to 14074. [2022-07-23 00:52:39,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14074 states, 11128 states have (on average 1.3880301941049604) internal successors, (15446), 11246 states have internal predecessors, (15446), 2183 states have call successors, (2183), 787 states have call predecessors, (2183), 762 states have return successors, (2198), 2124 states have call predecessors, (2198), 2170 states have call successors, (2198) [2022-07-23 00:52:39,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14074 states to 14074 states and 19827 transitions. [2022-07-23 00:52:39,965 INFO L78 Accepts]: Start accepts. Automaton has 14074 states and 19827 transitions. Word has length 123 [2022-07-23 00:52:39,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:52:39,966 INFO L495 AbstractCegarLoop]: Abstraction has 14074 states and 19827 transitions. [2022-07-23 00:52:39,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-23 00:52:39,966 INFO L276 IsEmpty]: Start isEmpty. Operand 14074 states and 19827 transitions. [2022-07-23 00:52:39,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-23 00:52:39,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:52:39,971 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:52:39,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-23 00:52:39,971 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:52:39,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:52:39,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1039882275, now seen corresponding path program 1 times [2022-07-23 00:52:39,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:52:39,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510313003] [2022-07-23 00:52:39,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:52:39,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:52:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:40,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:52:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:40,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:40,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-23 00:52:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:40,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:40,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:52:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:40,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 00:52:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:40,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:40,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:52:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:40,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:52:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:40,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-23 00:52:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:40,342 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-23 00:52:40,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:52:40,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510313003] [2022-07-23 00:52:40,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510313003] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:52:40,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:52:40,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-23 00:52:40,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948552720] [2022-07-23 00:52:40,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:52:40,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 00:52:40,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:52:40,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 00:52:40,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-23 00:52:40,344 INFO L87 Difference]: Start difference. First operand 14074 states and 19827 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-23 00:52:43,706 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 [] [2022-07-23 00:52:45,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:52:45,888 INFO L93 Difference]: Finished difference Result 30035 states and 42731 transitions. [2022-07-23 00:52:45,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 00:52:45,888 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 120 [2022-07-23 00:52:45,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:52:45,982 INFO L225 Difference]: With dead ends: 30035 [2022-07-23 00:52:45,982 INFO L226 Difference]: Without dead ends: 15964 [2022-07-23 00:52:46,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-23 00:52:46,018 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 1368 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 814 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 814 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-23 00:52:46,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 2542 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [814 Valid, 1495 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-07-23 00:52:46,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15964 states. [2022-07-23 00:52:46,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15964 to 14074. [2022-07-23 00:52:46,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14074 states, 11128 states have (on average 1.3876707404744788) internal successors, (15442), 11246 states have internal predecessors, (15442), 2183 states have call successors, (2183), 787 states have call predecessors, (2183), 762 states have return successors, (2198), 2124 states have call predecessors, (2198), 2170 states have call successors, (2198) [2022-07-23 00:52:46,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14074 states to 14074 states and 19823 transitions. [2022-07-23 00:52:46,438 INFO L78 Accepts]: Start accepts. Automaton has 14074 states and 19823 transitions. Word has length 120 [2022-07-23 00:52:46,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:52:46,439 INFO L495 AbstractCegarLoop]: Abstraction has 14074 states and 19823 transitions. [2022-07-23 00:52:46,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-23 00:52:46,439 INFO L276 IsEmpty]: Start isEmpty. Operand 14074 states and 19823 transitions. [2022-07-23 00:52:46,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-23 00:52:46,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:52:46,444 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-23 00:52:46,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-23 00:52:46,444 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:52:46,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:52:46,444 INFO L85 PathProgramCache]: Analyzing trace with hash 580686427, now seen corresponding path program 1 times [2022-07-23 00:52:46,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:52:46,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192404452] [2022-07-23 00:52:46,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:52:46,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:52:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:46,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:52:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:46,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:46,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-23 00:52:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:46,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:46,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:52:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:46,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-23 00:52:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:46,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:46,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:52:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:46,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:52:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:46,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-23 00:52:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:46,862 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-23 00:52:46,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:52:46,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192404452] [2022-07-23 00:52:46,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192404452] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 00:52:46,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674582072] [2022-07-23 00:52:46,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:52:46,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 00:52:46,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 00:52:46,874 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) [2022-07-23 00:52:46,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-23 00:52:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:48,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 12383 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 00:52:48,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:52:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-23 00:52:48,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:52:48,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674582072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:52:48,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 00:52:48,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-23 00:52:48,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841673674] [2022-07-23 00:52:48,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:52:48,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 00:52:48,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:52:48,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 00:52:48,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-23 00:52:48,751 INFO L87 Difference]: Start difference. First operand 14074 states and 19823 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-23 00:52:50,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:52:50,304 INFO L93 Difference]: Finished difference Result 33201 states and 47327 transitions. [2022-07-23 00:52:50,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 00:52:50,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 120 [2022-07-23 00:52:50,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:52:50,379 INFO L225 Difference]: With dead ends: 33201 [2022-07-23 00:52:50,379 INFO L226 Difference]: Without dead ends: 19074 [2022-07-23 00:52:50,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-07-23 00:52:50,428 INFO L413 NwaCegarLoop]: 983 mSDtfsCounter, 297 mSDsluCounter, 5642 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 6625 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-23 00:52:50,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 6625 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-23 00:52:50,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19074 states. [2022-07-23 00:52:50,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19074 to 14078. [2022-07-23 00:52:50,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14078 states, 11132 states have (on average 1.3837585339561624) internal successors, (15404), 11250 states have internal predecessors, (15404), 2183 states have call successors, (2183), 787 states have call predecessors, (2183), 762 states have return successors, (2198), 2124 states have call predecessors, (2198), 2170 states have call successors, (2198) [2022-07-23 00:52:51,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14078 states to 14078 states and 19785 transitions. [2022-07-23 00:52:51,024 INFO L78 Accepts]: Start accepts. Automaton has 14078 states and 19785 transitions. Word has length 120 [2022-07-23 00:52:51,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:52:51,026 INFO L495 AbstractCegarLoop]: Abstraction has 14078 states and 19785 transitions. [2022-07-23 00:52:51,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-23 00:52:51,026 INFO L276 IsEmpty]: Start isEmpty. Operand 14078 states and 19785 transitions. [2022-07-23 00:52:51,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-23 00:52:51,032 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:52:51,032 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-23 00:52:51,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-23 00:52:51,255 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,SelfDestructingSolverStorable15 [2022-07-23 00:52:51,255 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:52:51,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:52:51,256 INFO L85 PathProgramCache]: Analyzing trace with hash 559133422, now seen corresponding path program 1 times [2022-07-23 00:52:51,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:52:51,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379113320] [2022-07-23 00:52:51,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:52:51,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:52:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:51,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:52:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:51,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:51,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-23 00:52:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:51,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:51,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-23 00:52:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:51,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:51,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:52:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:51,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-23 00:52:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:51,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:52:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:51,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:52:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:51,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:52:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:51,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-23 00:52:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:52:51,781 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-23 00:52:51,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:52:51,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379113320] [2022-07-23 00:52:51,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379113320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:52:51,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:52:51,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-23 00:52:51,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390888222] [2022-07-23 00:52:51,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:52:51,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 00:52:51,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:52:51,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 00:52:51,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-23 00:52:51,786 INFO L87 Difference]: Start difference. First operand 14078 states and 19785 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-23 00:52:55,503 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:52:57,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:53:00,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:53:00,185 INFO L93 Difference]: Finished difference Result 41426 states and 60219 transitions. [2022-07-23 00:53:00,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 00:53:00,186 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 145 [2022-07-23 00:53:00,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:53:00,281 INFO L225 Difference]: With dead ends: 41426 [2022-07-23 00:53:00,281 INFO L226 Difference]: Without dead ends: 27351 [2022-07-23 00:53:00,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-23 00:53:00,315 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 1105 mSDsluCounter, 3263 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 388 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 4247 SdHoareTripleChecker+Invalid, 2361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-07-23 00:53:00,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 4247 Invalid, 2361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 1971 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2022-07-23 00:53:00,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27351 states. [2022-07-23 00:53:00,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27351 to 14036. [2022-07-23 00:53:00,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14036 states, 11090 states have (on average 1.3801623083859333) internal successors, (15306), 11208 states have internal predecessors, (15306), 2183 states have call successors, (2183), 787 states have call predecessors, (2183), 762 states have return successors, (2198), 2124 states have call predecessors, (2198), 2170 states have call successors, (2198) [2022-07-23 00:53:00,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14036 states to 14036 states and 19687 transitions. [2022-07-23 00:53:00,988 INFO L78 Accepts]: Start accepts. Automaton has 14036 states and 19687 transitions. Word has length 145 [2022-07-23 00:53:00,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:53:00,989 INFO L495 AbstractCegarLoop]: Abstraction has 14036 states and 19687 transitions. [2022-07-23 00:53:00,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-23 00:53:00,989 INFO L276 IsEmpty]: Start isEmpty. Operand 14036 states and 19687 transitions. [2022-07-23 00:53:00,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-23 00:53:00,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:53:00,994 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-23 00:53:00,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-23 00:53:00,995 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:53:00,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:53:00,995 INFO L85 PathProgramCache]: Analyzing trace with hash 823178437, now seen corresponding path program 1 times [2022-07-23 00:53:00,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:53:00,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726704779] [2022-07-23 00:53:00,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:53:00,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:53:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:01,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:53:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:01,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:01,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-23 00:53:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:01,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:01,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-23 00:53:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:01,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:01,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-23 00:53:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:01,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:01,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:53:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:01,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-23 00:53:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:01,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:01,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:53:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:01,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:53:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:01,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-23 00:53:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:01,359 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-23 00:53:01,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:53:01,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726704779] [2022-07-23 00:53:01,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726704779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:53:01,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:53:01,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-23 00:53:01,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556142103] [2022-07-23 00:53:01,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:53:01,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 00:53:01,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:53:01,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 00:53:01,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-23 00:53:01,361 INFO L87 Difference]: Start difference. First operand 14036 states and 19687 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-23 00:53:04,599 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 [] [2022-07-23 00:53:07,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:53:07,362 INFO L93 Difference]: Finished difference Result 42564 states and 61847 transitions. [2022-07-23 00:53:07,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 00:53:07,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 148 [2022-07-23 00:53:07,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:53:07,427 INFO L225 Difference]: With dead ends: 42564 [2022-07-23 00:53:07,427 INFO L226 Difference]: Without dead ends: 28531 [2022-07-23 00:53:07,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-23 00:53:07,456 INFO L413 NwaCegarLoop]: 1446 mSDtfsCounter, 1161 mSDsluCounter, 4293 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 618 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 5739 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-23 00:53:07,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1232 Valid, 5739 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 1661 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-07-23 00:53:07,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28531 states. [2022-07-23 00:53:07,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28531 to 14064. [2022-07-23 00:53:07,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14064 states, 11118 states have (on average 1.379204892966361) internal successors, (15334), 11236 states have internal predecessors, (15334), 2183 states have call successors, (2183), 787 states have call predecessors, (2183), 762 states have return successors, (2198), 2124 states have call predecessors, (2198), 2170 states have call successors, (2198) [2022-07-23 00:53:07,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14064 states to 14064 states and 19715 transitions. [2022-07-23 00:53:07,948 INFO L78 Accepts]: Start accepts. Automaton has 14064 states and 19715 transitions. Word has length 148 [2022-07-23 00:53:07,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:53:07,949 INFO L495 AbstractCegarLoop]: Abstraction has 14064 states and 19715 transitions. [2022-07-23 00:53:07,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-23 00:53:07,949 INFO L276 IsEmpty]: Start isEmpty. Operand 14064 states and 19715 transitions. [2022-07-23 00:53:07,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-23 00:53:07,955 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:53:07,955 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-23 00:53:07,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-23 00:53:07,955 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:53:07,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:53:07,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1681591430, now seen corresponding path program 1 times [2022-07-23 00:53:07,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:53:07,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244492705] [2022-07-23 00:53:07,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:53:07,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:53:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:08,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:53:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:08,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:08,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-23 00:53:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:08,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:08,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-23 00:53:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:08,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:08,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-23 00:53:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:08,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:08,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:53:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:08,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-23 00:53:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:08,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:08,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:53:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:08,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:53:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:08,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-23 00:53:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-23 00:53:08,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:53:08,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244492705] [2022-07-23 00:53:08,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244492705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:53:08,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:53:08,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 00:53:08,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577051287] [2022-07-23 00:53:08,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:53:08,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 00:53:08,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:53:08,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 00:53:08,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:53:08,441 INFO L87 Difference]: Start difference. First operand 14064 states and 19715 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-23 00:53:12,368 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 [] [2022-07-23 00:53:14,585 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 [] [2022-07-23 00:53:17,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:53:17,741 INFO L93 Difference]: Finished difference Result 45458 states and 64413 transitions. [2022-07-23 00:53:17,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-23 00:53:17,742 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 148 [2022-07-23 00:53:17,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:53:17,880 INFO L225 Difference]: With dead ends: 45458 [2022-07-23 00:53:17,880 INFO L226 Difference]: Without dead ends: 31397 [2022-07-23 00:53:17,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-23 00:53:17,935 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 2035 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 1378 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 2730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1378 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-07-23 00:53:17,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 2267 Invalid, 2730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1378 Valid, 1350 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2022-07-23 00:53:17,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31397 states. [2022-07-23 00:53:19,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31397 to 27546. [2022-07-23 00:53:19,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27546 states, 21778 states have (on average 1.3768941133253743) internal successors, (29986), 22024 states have internal predecessors, (29986), 4245 states have call successors, (4245), 1569 states have call predecessors, (4245), 1522 states have return successors, (4282), 4120 states have call predecessors, (4282), 4226 states have call successors, (4282) [2022-07-23 00:53:19,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27546 states to 27546 states and 38513 transitions. [2022-07-23 00:53:19,154 INFO L78 Accepts]: Start accepts. Automaton has 27546 states and 38513 transitions. Word has length 148 [2022-07-23 00:53:19,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:53:19,155 INFO L495 AbstractCegarLoop]: Abstraction has 27546 states and 38513 transitions. [2022-07-23 00:53:19,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-23 00:53:19,155 INFO L276 IsEmpty]: Start isEmpty. Operand 27546 states and 38513 transitions. [2022-07-23 00:53:19,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-23 00:53:19,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:53:19,164 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:53:19,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-23 00:53:19,164 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:53:19,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:53:19,165 INFO L85 PathProgramCache]: Analyzing trace with hash 606760287, now seen corresponding path program 1 times [2022-07-23 00:53:19,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:53:19,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039882118] [2022-07-23 00:53:19,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:53:19,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:53:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:19,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:53:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:19,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:19,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-23 00:53:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:19,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:19,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-23 00:53:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:19,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:19,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:53:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:19,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-23 00:53:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:19,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-23 00:53:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:19,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-23 00:53:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:19,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:19,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 00:53:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:19,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:19,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-23 00:53:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:19,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-23 00:53:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:19,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-23 00:53:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:19,780 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-23 00:53:19,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:53:19,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039882118] [2022-07-23 00:53:19,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039882118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:53:19,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:53:19,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-23 00:53:19,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002487009] [2022-07-23 00:53:19,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:53:19,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 00:53:19,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:53:19,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 00:53:19,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-23 00:53:19,782 INFO L87 Difference]: Start difference. First operand 27546 states and 38513 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-23 00:53:22,938 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 [] [2022-07-23 00:53:24,975 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 [] [2022-07-23 00:53:26,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:53:26,943 INFO L93 Difference]: Finished difference Result 46673 states and 64935 transitions. [2022-07-23 00:53:26,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 00:53:26,961 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 159 [2022-07-23 00:53:26,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:53:27,032 INFO L225 Difference]: With dead ends: 46673 [2022-07-23 00:53:27,032 INFO L226 Difference]: Without dead ends: 19130 [2022-07-23 00:53:27,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-07-23 00:53:27,096 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 1273 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 695 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 695 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-07-23 00:53:27,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 2062 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [695 Valid, 906 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2022-07-23 00:53:27,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19130 states. [2022-07-23 00:53:27,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19130 to 12295. [2022-07-23 00:53:27,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12295 states, 9689 states have (on average 1.394984002477036) internal successors, (13516), 9809 states have internal predecessors, (13516), 1931 states have call successors, (1931), 699 states have call predecessors, (1931), 674 states have return successors, (1946), 1870 states have call predecessors, (1946), 1918 states have call successors, (1946) [2022-07-23 00:53:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12295 states to 12295 states and 17393 transitions. [2022-07-23 00:53:27,774 INFO L78 Accepts]: Start accepts. Automaton has 12295 states and 17393 transitions. Word has length 159 [2022-07-23 00:53:27,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:53:27,775 INFO L495 AbstractCegarLoop]: Abstraction has 12295 states and 17393 transitions. [2022-07-23 00:53:27,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-23 00:53:27,775 INFO L276 IsEmpty]: Start isEmpty. Operand 12295 states and 17393 transitions. [2022-07-23 00:53:27,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-23 00:53:27,780 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:53:27,781 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:53:27,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-23 00:53:27,781 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:53:27,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:53:27,782 INFO L85 PathProgramCache]: Analyzing trace with hash -577394368, now seen corresponding path program 1 times [2022-07-23 00:53:27,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:53:27,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060470754] [2022-07-23 00:53:27,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:53:27,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:53:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:28,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:53:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:28,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:28,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-23 00:53:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:28,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:28,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-23 00:53:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:28,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:28,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-23 00:53:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:28,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:28,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 00:53:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:28,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:28,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:53:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:28,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-23 00:53:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:28,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:28,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:53:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:28,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:53:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:28,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-23 00:53:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-23 00:53:28,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:53:28,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060470754] [2022-07-23 00:53:28,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060470754] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 00:53:28,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418417136] [2022-07-23 00:53:28,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:53:28,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 00:53:28,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 00:53:28,232 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) [2022-07-23 00:53:28,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-23 00:53:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:30,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 12546 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 00:53:30,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:53:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-23 00:53:30,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:53:30,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418417136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:53:30,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 00:53:30,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-23 00:53:30,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123905968] [2022-07-23 00:53:30,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:53:30,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 00:53:30,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:53:30,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 00:53:30,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-23 00:53:30,147 INFO L87 Difference]: Start difference. First operand 12295 states and 17393 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-23 00:53:30,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:53:30,988 INFO L93 Difference]: Finished difference Result 24587 states and 34779 transitions. [2022-07-23 00:53:30,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 00:53:30,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 167 [2022-07-23 00:53:30,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:53:31,027 INFO L225 Difference]: With dead ends: 24587 [2022-07-23 00:53:31,027 INFO L226 Difference]: Without dead ends: 12302 [2022-07-23 00:53:31,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-07-23 00:53:31,058 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 27 mSDsluCounter, 3092 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3878 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 00:53:31,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3878 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 00:53:31,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12302 states. [2022-07-23 00:53:31,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12302 to 12197. [2022-07-23 00:53:31,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12197 states, 9607 states have (on average 1.3954408243988758) internal successors, (13406), 9729 states have internal predecessors, (13406), 1922 states have call successors, (1922), 692 states have call predecessors, (1922), 667 states have return successors, (1937), 1859 states have call predecessors, (1937), 1909 states have call successors, (1937) [2022-07-23 00:53:31,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12197 states to 12197 states and 17265 transitions. [2022-07-23 00:53:31,529 INFO L78 Accepts]: Start accepts. Automaton has 12197 states and 17265 transitions. Word has length 167 [2022-07-23 00:53:31,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:53:31,529 INFO L495 AbstractCegarLoop]: Abstraction has 12197 states and 17265 transitions. [2022-07-23 00:53:31,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-23 00:53:31,529 INFO L276 IsEmpty]: Start isEmpty. Operand 12197 states and 17265 transitions. [2022-07-23 00:53:31,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-23 00:53:31,534 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:53:31,535 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-23 00:53:31,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-23 00:53:31,763 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 [2022-07-23 00:53:31,763 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:53:31,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:53:31,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1326215580, now seen corresponding path program 1 times [2022-07-23 00:53:31,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:53:31,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598082342] [2022-07-23 00:53:31,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:53:31,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:53:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:32,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:53:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:32,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:32,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-23 00:53:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:32,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:32,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-23 00:53:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:32,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:32,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:53:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:32,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 00:53:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:32,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:32,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:53:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:32,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-23 00:53:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:32,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:32,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:53:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:32,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:53:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:32,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-23 00:53:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:32,240 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-23 00:53:32,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:53:32,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598082342] [2022-07-23 00:53:32,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598082342] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 00:53:32,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129879807] [2022-07-23 00:53:32,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:53:32,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 00:53:32,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 00:53:32,252 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 00:53:32,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-23 00:53:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:33,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 12607 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 00:53:33,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:53:34,051 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-23 00:53:34,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:53:34,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129879807] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:53:34,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 00:53:34,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2022-07-23 00:53:34,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652222288] [2022-07-23 00:53:34,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:53:34,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 00:53:34,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:53:34,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 00:53:34,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-23 00:53:34,052 INFO L87 Difference]: Start difference. First operand 12197 states and 17265 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-23 00:53:35,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:53:35,832 INFO L93 Difference]: Finished difference Result 36554 states and 51747 transitions. [2022-07-23 00:53:35,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 00:53:35,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 168 [2022-07-23 00:53:35,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:53:35,947 INFO L225 Difference]: With dead ends: 36554 [2022-07-23 00:53:35,947 INFO L226 Difference]: Without dead ends: 36539 [2022-07-23 00:53:35,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-23 00:53:35,965 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 1507 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-23 00:53:35,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 2875 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-23 00:53:35,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36539 states. [2022-07-23 00:53:37,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36539 to 36477. [2022-07-23 00:53:37,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36477 states, 28731 states have (on average 1.3953569315373637) internal successors, (40090), 29089 states have internal predecessors, (40090), 5748 states have call successors, (5748), 2066 states have call predecessors, (5748), 1997 states have return successors, (5807), 5573 states have call predecessors, (5807), 5723 states have call successors, (5807) [2022-07-23 00:53:37,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36477 states to 36477 states and 51645 transitions. [2022-07-23 00:53:37,584 INFO L78 Accepts]: Start accepts. Automaton has 36477 states and 51645 transitions. Word has length 168 [2022-07-23 00:53:37,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:53:37,585 INFO L495 AbstractCegarLoop]: Abstraction has 36477 states and 51645 transitions. [2022-07-23 00:53:37,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-23 00:53:37,585 INFO L276 IsEmpty]: Start isEmpty. Operand 36477 states and 51645 transitions. [2022-07-23 00:53:37,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-23 00:53:37,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:53:37,595 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-07-23 00:53:37,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-23 00:53:37,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 00:53:37,811 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:53:37,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:53:37,811 INFO L85 PathProgramCache]: Analyzing trace with hash 508576284, now seen corresponding path program 1 times [2022-07-23 00:53:37,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:53:37,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844920139] [2022-07-23 00:53:37,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:53:37,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:53:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:38,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:53:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:38,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:38,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-23 00:53:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:38,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:38,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-23 00:53:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:38,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:38,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:53:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:38,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 00:53:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:38,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:38,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:53:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:38,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-23 00:53:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:38,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-23 00:53:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:38,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-23 00:53:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:38,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:38,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 00:53:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:38,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:38,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-23 00:53:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:38,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-23 00:53:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:38,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-23 00:53:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-23 00:53:38,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:53:38,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844920139] [2022-07-23 00:53:38,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844920139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:53:38,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:53:38,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-23 00:53:38,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891539036] [2022-07-23 00:53:38,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:53:38,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 00:53:38,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:53:38,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 00:53:38,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-23 00:53:38,322 INFO L87 Difference]: Start difference. First operand 36477 states and 51645 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-23 00:53:42,109 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 [] [2022-07-23 00:53:45,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:53:45,351 INFO L93 Difference]: Finished difference Result 78432 states and 112243 transitions. [2022-07-23 00:53:45,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 00:53:45,352 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 176 [2022-07-23 00:53:45,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:53:45,658 INFO L225 Difference]: With dead ends: 78432 [2022-07-23 00:53:45,659 INFO L226 Difference]: Without dead ends: 41973 [2022-07-23 00:53:45,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-07-23 00:53:45,740 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 592 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 456 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 2460 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-23 00:53:45,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 2460 Invalid, 1764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 1307 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-07-23 00:53:45,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41973 states. [2022-07-23 00:53:47,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41973 to 36519. [2022-07-23 00:53:47,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36519 states, 28773 states have (on average 1.394779828311264) internal successors, (40132), 29131 states have internal predecessors, (40132), 5748 states have call successors, (5748), 2066 states have call predecessors, (5748), 1997 states have return successors, (5807), 5573 states have call predecessors, (5807), 5723 states have call successors, (5807) [2022-07-23 00:53:47,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36519 states to 36519 states and 51687 transitions. [2022-07-23 00:53:47,610 INFO L78 Accepts]: Start accepts. Automaton has 36519 states and 51687 transitions. Word has length 176 [2022-07-23 00:53:47,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:53:47,610 INFO L495 AbstractCegarLoop]: Abstraction has 36519 states and 51687 transitions. [2022-07-23 00:53:47,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-23 00:53:47,611 INFO L276 IsEmpty]: Start isEmpty. Operand 36519 states and 51687 transitions. [2022-07-23 00:53:47,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-23 00:53:47,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:53:47,621 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-07-23 00:53:47,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-23 00:53:47,622 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:53:47,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:53:47,622 INFO L85 PathProgramCache]: Analyzing trace with hash -300770342, now seen corresponding path program 1 times [2022-07-23 00:53:47,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:53:47,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152238596] [2022-07-23 00:53:47,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:53:47,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:53:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:48,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:53:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:48,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:48,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-23 00:53:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:48,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:48,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-23 00:53:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:48,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:48,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:53:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:48,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 00:53:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:48,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:48,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:53:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:48,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-23 00:53:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:48,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-23 00:53:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:48,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-23 00:53:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:48,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:48,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 00:53:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:48,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:48,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-23 00:53:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:48,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-23 00:53:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:48,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-23 00:53:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:48,275 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-23 00:53:48,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:53:48,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152238596] [2022-07-23 00:53:48,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152238596] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:53:48,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:53:48,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-23 00:53:48,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633197834] [2022-07-23 00:53:48,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:53:48,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 00:53:48,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:53:48,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 00:53:48,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-23 00:53:48,278 INFO L87 Difference]: Start difference. First operand 36519 states and 51687 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-23 00:53:52,142 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 [] [2022-07-23 00:53:56,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:53:56,176 INFO L93 Difference]: Finished difference Result 78476 states and 111992 transitions. [2022-07-23 00:53:56,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-23 00:53:56,177 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 176 [2022-07-23 00:53:56,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:53:56,383 INFO L225 Difference]: With dead ends: 78476 [2022-07-23 00:53:56,384 INFO L226 Difference]: Without dead ends: 41975 [2022-07-23 00:53:56,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-07-23 00:53:56,460 INFO L413 NwaCegarLoop]: 1177 mSDtfsCounter, 1392 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 1052 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 3150 SdHoareTripleChecker+Invalid, 2583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1052 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-23 00:53:56,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1445 Valid, 3150 Invalid, 2583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1052 Valid, 1530 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-07-23 00:53:56,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41975 states. [2022-07-23 00:53:58,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41975 to 35846. [2022-07-23 00:53:58,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35846 states, 28303 states have (on average 1.394975797618627) internal successors, (39482), 28651 states have internal predecessors, (39482), 5592 states have call successors, (5592), 2009 states have call predecessors, (5592), 1950 states have return successors, (5502), 5437 states have call predecessors, (5502), 5502 states have call successors, (5502) [2022-07-23 00:53:58,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35846 states to 35846 states and 50576 transitions. [2022-07-23 00:53:58,245 INFO L78 Accepts]: Start accepts. Automaton has 35846 states and 50576 transitions. Word has length 176 [2022-07-23 00:53:58,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:53:58,246 INFO L495 AbstractCegarLoop]: Abstraction has 35846 states and 50576 transitions. [2022-07-23 00:53:58,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-23 00:53:58,246 INFO L276 IsEmpty]: Start isEmpty. Operand 35846 states and 50576 transitions. [2022-07-23 00:53:58,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-23 00:53:58,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:53:58,258 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-23 00:53:58,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-23 00:53:58,258 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:53:58,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:53:58,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1860346325, now seen corresponding path program 1 times [2022-07-23 00:53:58,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:53:58,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70323968] [2022-07-23 00:53:58,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:53:58,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:53:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:58,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:53:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:58,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:58,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-23 00:53:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:58,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:58,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-23 00:53:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:58,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:58,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:53:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:58,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 00:53:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:58,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:58,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:53:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:58,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-23 00:53:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:58,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:58,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:53:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:58,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:53:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:58,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-23 00:53:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:58,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:53:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:53:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-23 00:53:58,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:53:58,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70323968] [2022-07-23 00:53:58,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70323968] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:53:58,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:53:58,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 00:53:58,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839801830] [2022-07-23 00:53:58,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:53:58,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 00:53:58,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:53:58,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 00:53:58,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:53:58,685 INFO L87 Difference]: Start difference. First operand 35846 states and 50576 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-23 00:54:02,112 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 [] [2022-07-23 00:54:04,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:54:04,787 INFO L93 Difference]: Finished difference Result 75599 states and 108075 transitions. [2022-07-23 00:54:04,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-23 00:54:04,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 179 [2022-07-23 00:54:04,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:54:04,907 INFO L225 Difference]: With dead ends: 75599 [2022-07-23 00:54:04,907 INFO L226 Difference]: Without dead ends: 37059 [2022-07-23 00:54:04,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-23 00:54:04,985 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 1112 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 673 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-23 00:54:04,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1137 Valid, 1948 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 762 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-07-23 00:54:05,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37059 states. [2022-07-23 00:54:06,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37059 to 15853. [2022-07-23 00:54:06,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15853 states, 12581 states have (on average 1.3948811700182815) internal successors, (17549), 12743 states have internal predecessors, (17549), 2463 states have call successors, (2463), 840 states have call predecessors, (2463), 808 states have return successors, (2412), 2386 states have call predecessors, (2412), 2412 states have call successors, (2412) [2022-07-23 00:54:06,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15853 states to 15853 states and 22424 transitions. [2022-07-23 00:54:06,120 INFO L78 Accepts]: Start accepts. Automaton has 15853 states and 22424 transitions. Word has length 179 [2022-07-23 00:54:06,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:54:06,121 INFO L495 AbstractCegarLoop]: Abstraction has 15853 states and 22424 transitions. [2022-07-23 00:54:06,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-23 00:54:06,121 INFO L276 IsEmpty]: Start isEmpty. Operand 15853 states and 22424 transitions. [2022-07-23 00:54:06,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-23 00:54:06,128 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:54:06,128 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-23 00:54:06,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-23 00:54:06,129 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:54:06,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:54:06,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1792407628, now seen corresponding path program 1 times [2022-07-23 00:54:06,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:54:06,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111548496] [2022-07-23 00:54:06,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:54:06,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:54:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:06,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:54:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:06,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:06,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-23 00:54:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:06,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:06,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-23 00:54:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:06,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:06,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:54:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:06,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 00:54:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:06,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:06,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:54:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:06,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-23 00:54:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:06,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:06,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:54:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:06,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:54:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:06,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-23 00:54:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-23 00:54:06,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:54:06,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111548496] [2022-07-23 00:54:06,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111548496] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:54:06,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:54:06,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 00:54:06,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405309252] [2022-07-23 00:54:06,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:54:06,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 00:54:06,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:54:06,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 00:54:06,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:54:06,600 INFO L87 Difference]: Start difference. First operand 15853 states and 22424 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-23 00:54:09,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:54:11,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:54:15,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:54:15,383 INFO L93 Difference]: Finished difference Result 36922 states and 52975 transitions. [2022-07-23 00:54:15,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-23 00:54:15,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 184 [2022-07-23 00:54:15,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:54:15,494 INFO L225 Difference]: With dead ends: 36922 [2022-07-23 00:54:15,494 INFO L226 Difference]: Without dead ends: 21291 [2022-07-23 00:54:15,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-07-23 00:54:15,540 INFO L413 NwaCegarLoop]: 1189 mSDtfsCounter, 1167 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 1730 mSolverCounterSat, 895 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 2626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 895 IncrementalHoareTripleChecker+Valid, 1730 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-07-23 00:54:15,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 3047 Invalid, 2626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [895 Valid, 1730 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-07-23 00:54:15,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21291 states. [2022-07-23 00:54:16,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21291 to 18238. [2022-07-23 00:54:16,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18238 states, 14489 states have (on average 1.3932638553385326) internal successors, (20187), 14672 states have internal predecessors, (20187), 2823 states have call successors, (2823), 960 states have call predecessors, (2823), 925 states have return successors, (2769), 2740 states have call predecessors, (2769), 2769 states have call successors, (2769) [2022-07-23 00:54:16,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18238 states to 18238 states and 25779 transitions. [2022-07-23 00:54:16,486 INFO L78 Accepts]: Start accepts. Automaton has 18238 states and 25779 transitions. Word has length 184 [2022-07-23 00:54:16,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:54:16,487 INFO L495 AbstractCegarLoop]: Abstraction has 18238 states and 25779 transitions. [2022-07-23 00:54:16,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-23 00:54:16,487 INFO L276 IsEmpty]: Start isEmpty. Operand 18238 states and 25779 transitions. [2022-07-23 00:54:16,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-23 00:54:16,496 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:54:16,496 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:54:16,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-23 00:54:16,497 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:54:16,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:54:16,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1456701812, now seen corresponding path program 1 times [2022-07-23 00:54:16,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:54:16,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719815045] [2022-07-23 00:54:16,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:54:16,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:54:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:16,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:54:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:16,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:16,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-23 00:54:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:16,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:16,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-23 00:54:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:16,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:16,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:54:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:16,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 00:54:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:16,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:16,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:54:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:16,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-23 00:54:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:16,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:16,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:54:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:16,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:54:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:16,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-23 00:54:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:16,990 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-23 00:54:16,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:54:16,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719815045] [2022-07-23 00:54:16,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719815045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:54:16,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:54:16,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 00:54:16,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748019032] [2022-07-23 00:54:16,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:54:16,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 00:54:16,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:54:16,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 00:54:16,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:54:16,993 INFO L87 Difference]: Start difference. First operand 18238 states and 25779 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-23 00:54:20,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:54:22,980 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:54:26,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:54:26,563 INFO L93 Difference]: Finished difference Result 42103 states and 60333 transitions. [2022-07-23 00:54:26,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-23 00:54:26,563 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 190 [2022-07-23 00:54:26,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:54:26,655 INFO L225 Difference]: With dead ends: 42103 [2022-07-23 00:54:26,655 INFO L226 Difference]: Without dead ends: 24087 [2022-07-23 00:54:26,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-07-23 00:54:26,706 INFO L413 NwaCegarLoop]: 1186 mSDtfsCounter, 1166 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 894 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 2640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 894 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-07-23 00:54:26,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 3047 Invalid, 2640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [894 Valid, 1744 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2022-07-23 00:54:26,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24087 states. [2022-07-23 00:54:27,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24087 to 20623. [2022-07-23 00:54:27,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20623 states, 16397 states have (on average 1.3920229310239678) internal successors, (22825), 16601 states have internal predecessors, (22825), 3183 states have call successors, (3183), 1080 states have call predecessors, (3183), 1042 states have return successors, (3126), 3094 states have call predecessors, (3126), 3126 states have call successors, (3126) [2022-07-23 00:54:27,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20623 states to 20623 states and 29134 transitions. [2022-07-23 00:54:27,770 INFO L78 Accepts]: Start accepts. Automaton has 20623 states and 29134 transitions. Word has length 190 [2022-07-23 00:54:27,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:54:27,770 INFO L495 AbstractCegarLoop]: Abstraction has 20623 states and 29134 transitions. [2022-07-23 00:54:27,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-23 00:54:27,770 INFO L276 IsEmpty]: Start isEmpty. Operand 20623 states and 29134 transitions. [2022-07-23 00:54:27,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-23 00:54:27,776 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:54:27,777 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-23 00:54:27,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-23 00:54:27,777 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:54:27,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:54:27,777 INFO L85 PathProgramCache]: Analyzing trace with hash -2142147971, now seen corresponding path program 1 times [2022-07-23 00:54:27,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:54:27,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773794840] [2022-07-23 00:54:27,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:54:27,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:54:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:28,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:54:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:28,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:28,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-23 00:54:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:28,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:28,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-23 00:54:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:28,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:28,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:54:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:28,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 00:54:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:28,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:28,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:54:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:28,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-23 00:54:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:28,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:28,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:54:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:28,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:54:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:28,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-23 00:54:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:28,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:28,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-23 00:54:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-23 00:54:28,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:54:28,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773794840] [2022-07-23 00:54:28,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773794840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:54:28,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:54:28,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 00:54:28,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278049246] [2022-07-23 00:54:28,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:54:28,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 00:54:28,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:54:28,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 00:54:28,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:54:28,253 INFO L87 Difference]: Start difference. First operand 20623 states and 29134 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-23 00:54:31,643 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 [] [2022-07-23 00:54:34,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:54:34,059 INFO L93 Difference]: Finished difference Result 46768 states and 66605 transitions. [2022-07-23 00:54:34,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-23 00:54:34,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 191 [2022-07-23 00:54:34,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:54:34,149 INFO L225 Difference]: With dead ends: 46768 [2022-07-23 00:54:34,150 INFO L226 Difference]: Without dead ends: 26367 [2022-07-23 00:54:34,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-23 00:54:34,192 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 1193 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 739 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 739 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-23 00:54:34,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1222 Valid, 2370 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [739 Valid, 863 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-07-23 00:54:34,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26367 states. [2022-07-23 00:54:35,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26367 to 22905. [2022-07-23 00:54:35,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22905 states, 18446 states have (on average 1.3882142469912175) internal successors, (25607), 18662 states have internal predecessors, (25607), 3304 states have call successors, (3304), 1196 states have call predecessors, (3304), 1154 states have return successors, (3235), 3199 states have call predecessors, (3235), 3235 states have call successors, (3235) [2022-07-23 00:54:35,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22905 states to 22905 states and 32146 transitions. [2022-07-23 00:54:35,418 INFO L78 Accepts]: Start accepts. Automaton has 22905 states and 32146 transitions. Word has length 191 [2022-07-23 00:54:35,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:54:35,418 INFO L495 AbstractCegarLoop]: Abstraction has 22905 states and 32146 transitions. [2022-07-23 00:54:35,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-23 00:54:35,419 INFO L276 IsEmpty]: Start isEmpty. Operand 22905 states and 32146 transitions. [2022-07-23 00:54:35,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-23 00:54:35,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:54:35,426 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:54:35,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-23 00:54:35,427 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:54:35,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:54:35,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1365975344, now seen corresponding path program 1 times [2022-07-23 00:54:35,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:54:35,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495519428] [2022-07-23 00:54:35,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:54:35,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:54:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:35,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:54:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:35,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:35,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-23 00:54:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:35,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:35,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-23 00:54:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:35,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:35,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:54:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:35,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 00:54:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:35,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:35,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:54:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:35,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-23 00:54:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:35,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:35,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:54:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:35,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:54:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:35,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-23 00:54:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:35,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:35,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-23 00:54:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-23 00:54:35,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:54:35,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495519428] [2022-07-23 00:54:35,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495519428] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 00:54:35,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541809412] [2022-07-23 00:54:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:54:35,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 00:54:35,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 00:54:35,896 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 00:54:35,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-23 00:54:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:37,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 12716 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 00:54:37,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 00:54:37,674 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-23 00:54:37,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 00:54:37,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541809412] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:54:37,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 00:54:37,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 10 [2022-07-23 00:54:37,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146523887] [2022-07-23 00:54:37,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:54:37,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 00:54:37,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:54:37,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 00:54:37,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-23 00:54:37,677 INFO L87 Difference]: Start difference. First operand 22905 states and 32146 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-23 00:54:39,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:54:39,408 INFO L93 Difference]: Finished difference Result 58022 states and 81482 transitions. [2022-07-23 00:54:39,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 00:54:39,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 189 [2022-07-23 00:54:39,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:54:39,526 INFO L225 Difference]: With dead ends: 58022 [2022-07-23 00:54:39,526 INFO L226 Difference]: Without dead ends: 35339 [2022-07-23 00:54:39,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-23 00:54:39,564 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 624 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 00:54:39,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 1520 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 00:54:39,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35339 states. [2022-07-23 00:54:41,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35339 to 34067. [2022-07-23 00:54:41,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34067 states, 27088 states have (on average 1.382272593030124) internal successors, (37443), 27415 states have internal predecessors, (37443), 5198 states have call successors, (5198), 1821 states have call predecessors, (5198), 1780 states have return successors, (5126), 5091 states have call predecessors, (5126), 5126 states have call successors, (5126) [2022-07-23 00:54:41,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34067 states to 34067 states and 47767 transitions. [2022-07-23 00:54:41,274 INFO L78 Accepts]: Start accepts. Automaton has 34067 states and 47767 transitions. Word has length 189 [2022-07-23 00:54:41,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:54:41,275 INFO L495 AbstractCegarLoop]: Abstraction has 34067 states and 47767 transitions. [2022-07-23 00:54:41,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-23 00:54:41,276 INFO L276 IsEmpty]: Start isEmpty. Operand 34067 states and 47767 transitions. [2022-07-23 00:54:41,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-23 00:54:41,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:54:41,281 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-23 00:54:41,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-23 00:54:41,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-23 00:54:41,507 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:54:41,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:54:41,508 INFO L85 PathProgramCache]: Analyzing trace with hash -386620780, now seen corresponding path program 1 times [2022-07-23 00:54:41,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:54:41,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683358524] [2022-07-23 00:54:41,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:54:41,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:54:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:41,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:54:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:41,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:41,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-23 00:54:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:41,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:41,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-23 00:54:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:41,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:41,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:54:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:41,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 00:54:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:41,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:41,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:54:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:41,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-23 00:54:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:41,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:41,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:54:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:41,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:54:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:41,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-23 00:54:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:41,834 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-23 00:54:41,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:54:41,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683358524] [2022-07-23 00:54:41,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683358524] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:54:41,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:54:41,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 00:54:41,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241159090] [2022-07-23 00:54:41,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:54:41,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 00:54:41,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:54:41,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 00:54:41,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:54:41,836 INFO L87 Difference]: Start difference. First operand 34067 states and 47767 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-23 00:54:45,621 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 [] [2022-07-23 00:54:48,380 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 [] [2022-07-23 00:54:53,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:54:53,183 INFO L93 Difference]: Finished difference Result 78335 states and 111333 transitions. [2022-07-23 00:54:53,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-23 00:54:53,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 191 [2022-07-23 00:54:53,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:54:53,391 INFO L225 Difference]: With dead ends: 78335 [2022-07-23 00:54:53,392 INFO L226 Difference]: Without dead ends: 44490 [2022-07-23 00:54:53,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-07-23 00:54:53,482 INFO L413 NwaCegarLoop]: 1180 mSDtfsCounter, 1173 mSDsluCounter, 1864 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 901 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 901 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-07-23 00:54:53,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 3044 Invalid, 2625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [901 Valid, 1722 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2022-07-23 00:54:53,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44490 states. [2022-07-23 00:54:55,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44490 to 37898. [2022-07-23 00:54:55,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37898 states, 30145 states have (on average 1.3812240835959528) internal successors, (41637), 30504 states have internal predecessors, (41637), 5774 states have call successors, (5774), 2021 states have call predecessors, (5774), 1978 states have return successors, (5700), 5663 states have call predecessors, (5700), 5700 states have call successors, (5700) [2022-07-23 00:54:55,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37898 states to 37898 states and 53111 transitions. [2022-07-23 00:54:55,828 INFO L78 Accepts]: Start accepts. Automaton has 37898 states and 53111 transitions. Word has length 191 [2022-07-23 00:54:55,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:54:55,829 INFO L495 AbstractCegarLoop]: Abstraction has 37898 states and 53111 transitions. [2022-07-23 00:54:55,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-23 00:54:55,829 INFO L276 IsEmpty]: Start isEmpty. Operand 37898 states and 53111 transitions. [2022-07-23 00:54:55,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-23 00:54:55,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:54:55,836 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-23 00:54:55,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-23 00:54:55,836 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:54:55,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:54:55,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1106890079, now seen corresponding path program 1 times [2022-07-23 00:54:55,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:54:55,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205148028] [2022-07-23 00:54:55,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:54:55,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:54:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:56,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:54:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:56,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:56,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-23 00:54:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:56,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:56,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-23 00:54:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:56,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:56,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:54:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:56,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 00:54:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:56,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:56,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:54:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:56,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-23 00:54:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:56,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:54:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:56,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:54:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:56,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:54:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:56,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-23 00:54:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:54:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-23 00:54:56,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:54:56,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205148028] [2022-07-23 00:54:56,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205148028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:54:56,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:54:56,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 00:54:56,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140309180] [2022-07-23 00:54:56,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:54:56,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 00:54:56,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:54:56,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 00:54:56,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:54:56,280 INFO L87 Difference]: Start difference. First operand 37898 states and 53111 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-23 00:54:59,973 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 [] [2022-07-23 00:55:06,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:55:06,524 INFO L93 Difference]: Finished difference Result 86682 states and 123101 transitions. [2022-07-23 00:55:06,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-23 00:55:06,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 191 [2022-07-23 00:55:06,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:55:06,722 INFO L225 Difference]: With dead ends: 86682 [2022-07-23 00:55:06,722 INFO L226 Difference]: Without dead ends: 49006 [2022-07-23 00:55:06,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-07-23 00:55:06,805 INFO L413 NwaCegarLoop]: 1164 mSDtfsCounter, 971 mSDsluCounter, 2341 mSDsCounter, 0 mSdLazyCounter, 2226 mSolverCounterSat, 625 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 3505 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 2226 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-07-23 00:55:06,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 3505 Invalid, 2852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 2226 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-07-23 00:55:06,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49006 states. [2022-07-23 00:55:08,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49006 to 41729. [2022-07-23 00:55:08,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41729 states, 33202 states have (on average 1.3803686524908139) internal successors, (45831), 33593 states have internal predecessors, (45831), 6350 states have call successors, (6350), 2221 states have call predecessors, (6350), 2176 states have return successors, (6274), 6235 states have call predecessors, (6274), 6274 states have call successors, (6274) [2022-07-23 00:55:09,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41729 states to 41729 states and 58455 transitions. [2022-07-23 00:55:09,083 INFO L78 Accepts]: Start accepts. Automaton has 41729 states and 58455 transitions. Word has length 191 [2022-07-23 00:55:09,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:55:09,084 INFO L495 AbstractCegarLoop]: Abstraction has 41729 states and 58455 transitions. [2022-07-23 00:55:09,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-23 00:55:09,085 INFO L276 IsEmpty]: Start isEmpty. Operand 41729 states and 58455 transitions. [2022-07-23 00:55:09,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-23 00:55:09,091 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:55:09,092 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:55:09,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-23 00:55:09,108 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:55:09,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:55:09,108 INFO L85 PathProgramCache]: Analyzing trace with hash -2083243964, now seen corresponding path program 1 times [2022-07-23 00:55:09,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:55:09,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857175874] [2022-07-23 00:55:09,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:55:09,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:55:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:55:09,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:55:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:55:09,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:55:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:55:09,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-23 00:55:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:55:09,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:55:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:55:09,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-23 00:55:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:55:09,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:55:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:55:09,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:55:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:55:09,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-23 00:55:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:55:09,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:55:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:55:09,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:55:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:55:09,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-23 00:55:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:55:09,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:55:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:55:09,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:55:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:55:09,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-23 00:55:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:55:09,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-23 00:55:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:55:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-23 00:55:09,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:55:09,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857175874] [2022-07-23 00:55:09,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857175874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:55:09,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:55:09,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 00:55:09,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148875285] [2022-07-23 00:55:09,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:55:09,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 00:55:09,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:55:09,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 00:55:09,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:55:09,638 INFO L87 Difference]: Start difference. First operand 41729 states and 58455 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-23 00:55:13,476 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:55:16,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:55:22,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:55:22,197 INFO L93 Difference]: Finished difference Result 95029 states and 134869 transitions. [2022-07-23 00:55:22,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-23 00:55:22,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 193 [2022-07-23 00:55:22,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:55:22,542 INFO L225 Difference]: With dead ends: 95029 [2022-07-23 00:55:22,543 INFO L226 Difference]: Without dead ends: 53522 [2022-07-23 00:55:22,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-07-23 00:55:22,626 INFO L413 NwaCegarLoop]: 1181 mSDtfsCounter, 1065 mSDsluCounter, 1881 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 757 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 3062 SdHoareTripleChecker+Invalid, 2505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 757 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-07-23 00:55:22,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 3062 Invalid, 2505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [757 Valid, 1746 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2022-07-23 00:55:22,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53522 states.