./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 f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-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-?-f4b24e3 [2022-07-14 01:14:55,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 01:14:55,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 01:14:55,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 01:14:55,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 01:14:55,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 01:14:55,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 01:14:55,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 01:14:55,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 01:14:55,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 01:14:55,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 01:14:55,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 01:14:55,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 01:14:55,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 01:14:55,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 01:14:55,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 01:14:55,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 01:14:55,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 01:14:55,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 01:14:55,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 01:14:55,880 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 01:14:55,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 01:14:55,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 01:14:55,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 01:14:55,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 01:14:55,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 01:14:55,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 01:14:55,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 01:14:55,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 01:14:55,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 01:14:55,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 01:14:55,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 01:14:55,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 01:14:55,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 01:14:55,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 01:14:55,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 01:14:55,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 01:14:55,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 01:14:55,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 01:14:55,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 01:14:55,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 01:14:55,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 01:14:55,899 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-14 01:14:55,926 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 01:14:55,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 01:14:55,927 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 01:14:55,927 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 01:14:55,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 01:14:55,927 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 01:14:55,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 01:14:55,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 01:14:55,928 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 01:14:55,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 01:14:55,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 01:14:55,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 01:14:55,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 01:14:55,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 01:14:55,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 01:14:55,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 01:14:55,930 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 01:14:55,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 01:14:55,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 01:14:55,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 01:14:55,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 01:14:55,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 01:14:55,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 01:14:55,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 01:14:55,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 01:14:55,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 01:14:55,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 01:14:55,932 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 01:14:55,933 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 01:14:55,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 01:14:55,933 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32c3d0de0693c88d7932ff8b6e02d1235a8aa90cfbd4ebc203b8adf917998be1 [2022-07-14 01:14:56,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 01:14:56,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 01:14:56,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 01:14:56,150 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 01:14:56,151 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 01:14:56,152 INFO L432 ainManager$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 [2022-07-14 01:14:56,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74b9f5cf5/ca42384677764c83b86b55939b929075/FLAG3dfe104fd [2022-07-14 01:14:56,799 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 01:14:56,800 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 [2022-07-14 01:14:56,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74b9f5cf5/ca42384677764c83b86b55939b929075/FLAG3dfe104fd [2022-07-14 01:14:57,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74b9f5cf5/ca42384677764c83b86b55939b929075 [2022-07-14 01:14:57,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 01:14:57,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 01:14:57,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 01:14:57,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 01:14:57,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 01:14:57,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:14:57" (1/1) ... [2022-07-14 01:14:57,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b667ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:14:57, skipping insertion in model container [2022-07-14 01:14:57,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:14:57" (1/1) ... [2022-07-14 01:14:57,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 01:14:57,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 01:14:57,872 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] [2022-07-14 01:14:57,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 01:14:57,996 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 01:14:58,143 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] [2022-07-14 01:14:58,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 01:14:58,303 INFO L208 MainTranslator]: Completed translation [2022-07-14 01:14:58,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:14:58 WrapperNode [2022-07-14 01:14:58,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 01:14:58,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 01:14:58,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 01:14:58,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 01:14:58,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:14:58" (1/1) ... [2022-07-14 01:14:58,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:14:58" (1/1) ... [2022-07-14 01:14:58,528 INFO L137 Inliner]: procedures = 165, calls = 5249, calls flagged for inlining = 57, calls inlined = 52, statements flattened = 6390 [2022-07-14 01:14:58,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 01:14:58,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 01:14:58,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 01:14:58,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 01:14:58,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:14:58" (1/1) ... [2022-07-14 01:14:58,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:14:58" (1/1) ... [2022-07-14 01:14:58,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:14:58" (1/1) ... [2022-07-14 01:14:58,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:14:58" (1/1) ... [2022-07-14 01:14:58,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:14:58" (1/1) ... [2022-07-14 01:14:58,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:14:58" (1/1) ... [2022-07-14 01:14:58,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:14:58" (1/1) ... [2022-07-14 01:14:58,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 01:14:58,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 01:14:58,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 01:14:58,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 01:14:58,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:14:58" (1/1) ... [2022-07-14 01:14:58,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 01:14:58,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 01:14:58,804 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-14 01:14:58,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-14 01:14:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_while_busy [2022-07-14 01:14:58,848 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_while_busy [2022-07-14 01:14:58,848 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-14 01:14:58,848 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-14 01:14:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_for_read [2022-07-14 01:14:58,849 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_for_read [2022-07-14 01:14:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-14 01:14:58,849 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-14 01:14:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2022-07-14 01:14:58,849 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2022-07-14 01:14:58,849 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_remove [2022-07-14 01:14:58,849 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_remove [2022-07-14 01:14:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure dmi_get_system_info [2022-07-14 01:14:58,850 INFO L138 BoogieDeclarations]: Found implementation of procedure dmi_get_system_info [2022-07-14 01:14:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-14 01:14:58,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-14 01:14:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 01:14:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-14 01:14:58,850 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-14 01:14:58,850 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read [2022-07-14 01:14:58,850 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read [2022-07-14 01:14:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-14 01:14:58,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-14 01:14:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 01:14:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-14 01:14:58,851 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-14 01:14:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-14 01:14:58,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-14 01:14:58,851 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_probe [2022-07-14 01:14:58,852 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_probe [2022-07-14 01:14:58,852 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-07-14 01:14:58,852 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-07-14 01:14:58,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2022-07-14 01:14:58,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2022-07-14 01:14:58,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-14 01:14:58,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-14 01:14:58,852 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_suspend [2022-07-14 01:14:58,853 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_suspend [2022-07-14 01:14:58,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-14 01:14:58,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-14 01:14:58,853 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-14 01:14:58,853 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-14 01:14:58,853 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read_increment_offset [2022-07-14 01:14:58,853 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read_increment_offset [2022-07-14 01:14:58,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 01:14:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2022-07-14 01:14:58,854 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2022-07-14 01:14:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-14 01:14:58,854 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-14 01:14:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 01:14:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 01:14:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 01:14:58,854 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_update_device [2022-07-14 01:14:58,855 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_update_device [2022-07-14 01:14:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 01:14:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-14 01:14:58,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-14 01:14:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 01:14:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 01:14:58,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2022-07-14 01:14:58,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2022-07-14 01:14:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2022-07-14 01:14:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-07-14 01:14:58,856 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-07-14 01:14:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-07-14 01:14:58,856 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-07-14 01:14:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 01:14:58,856 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-07-14 01:14:58,857 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-07-14 01:14:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 01:14:58,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 01:14:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_resume [2022-07-14 01:14:58,857 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_resume [2022-07-14 01:14:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-14 01:14:58,857 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-14 01:14:59,127 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 01:14:59,128 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 01:15:01,571 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-14 01:15:08,250 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 01:15:08,257 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 01:15:08,258 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-14 01:15:08,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:15:08 BoogieIcfgContainer [2022-07-14 01:15:08,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 01:15:08,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 01:15:08,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 01:15:08,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 01:15:08,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 01:14:57" (1/3) ... [2022-07-14 01:15:08,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30629280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:15:08, skipping insertion in model container [2022-07-14 01:15:08,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:14:58" (2/3) ... [2022-07-14 01:15:08,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30629280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:15:08, skipping insertion in model container [2022-07-14 01:15:08,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:15:08" (3/3) ... [2022-07-14 01:15:08,265 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2022-07-14 01:15:08,273 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 01:15:08,274 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-14 01:15:08,308 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 01:15:08,312 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@6cb43132, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@624d48b5 [2022-07-14 01:15:08,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-14 01:15:08,326 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) [2022-07-14 01:15:08,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-14 01:15:08,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:15:08,337 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] [2022-07-14 01:15:08,338 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:15:08,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:15:08,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1970887230, now seen corresponding path program 1 times [2022-07-14 01:15:08,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:15:08,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280946322] [2022-07-14 01:15:08,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:15:08,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:15:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:09,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-14 01:15:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:09,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 01:15:09,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:15:09,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280946322] [2022-07-14 01:15:09,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280946322] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:15:09,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:15:09,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 01:15:09,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443857234] [2022-07-14 01:15:09,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:15:09,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 01:15:09,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:15:09,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 01:15:09,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:15:09,158 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) [2022-07-14 01:15:09,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:15:09,513 INFO L93 Difference]: Finished difference Result 1560 states and 2283 transitions. [2022-07-14 01:15:09,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 01:15:09,516 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 [2022-07-14 01:15:09,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:15:09,531 INFO L225 Difference]: With dead ends: 1560 [2022-07-14 01:15:09,531 INFO L226 Difference]: Without dead ends: 987 [2022-07-14 01:15:09,584 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 [2022-07-14 01:15:09,587 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 [2022-07-14 01:15:09,587 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] [2022-07-14 01:15:09,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2022-07-14 01:15:09,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 973. [2022-07-14 01:15:09,659 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) [2022-07-14 01:15:09,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1383 transitions. [2022-07-14 01:15:09,665 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1383 transitions. Word has length 23 [2022-07-14 01:15:09,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:15:09,665 INFO L495 AbstractCegarLoop]: Abstraction has 973 states and 1383 transitions. [2022-07-14 01:15:09,665 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) [2022-07-14 01:15:09,665 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1383 transitions. [2022-07-14 01:15:09,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-14 01:15:09,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:15:09,667 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] [2022-07-14 01:15:09,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 01:15:09,667 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:15:09,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:15:09,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1089981821, now seen corresponding path program 1 times [2022-07-14 01:15:09,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:15:09,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031806958] [2022-07-14 01:15:09,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:15:09,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:15:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:10,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 01:15:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:10,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 01:15:10,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:15:10,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031806958] [2022-07-14 01:15:10,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031806958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:15:10,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:15:10,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 01:15:10,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104649135] [2022-07-14 01:15:10,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:15:10,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 01:15:10,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:15:10,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 01:15:10,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:15:10,149 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) [2022-07-14 01:15:10,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:15:10,405 INFO L93 Difference]: Finished difference Result 2750 states and 3913 transitions. [2022-07-14 01:15:10,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 01:15:10,405 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 [2022-07-14 01:15:10,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:15:10,418 INFO L225 Difference]: With dead ends: 2750 [2022-07-14 01:15:10,418 INFO L226 Difference]: Without dead ends: 1780 [2022-07-14 01:15:10,422 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 [2022-07-14 01:15:10,425 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 [2022-07-14 01:15:10,426 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] [2022-07-14 01:15:10,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2022-07-14 01:15:10,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1771. [2022-07-14 01:15:10,490 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) [2022-07-14 01:15:10,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2519 transitions. [2022-07-14 01:15:10,499 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2519 transitions. Word has length 21 [2022-07-14 01:15:10,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:15:10,499 INFO L495 AbstractCegarLoop]: Abstraction has 1771 states and 2519 transitions. [2022-07-14 01:15:10,500 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) [2022-07-14 01:15:10,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2519 transitions. [2022-07-14 01:15:10,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-14 01:15:10,505 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:15:10,505 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] [2022-07-14 01:15:10,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 01:15:10,506 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:15:10,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:15:10,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2140487856, now seen corresponding path program 1 times [2022-07-14 01:15:10,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:15:10,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531170567] [2022-07-14 01:15:10,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:15:10,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:15:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:11,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:15:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:11,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:15:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:11,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 01:15:11,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:15:11,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531170567] [2022-07-14 01:15:11,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531170567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:15:11,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:15:11,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 01:15:11,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758750200] [2022-07-14 01:15:11,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:15:11,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 01:15:11,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:15:11,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 01:15:11,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-14 01:15:11,071 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) [2022-07-14 01:15:12,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:15:12,774 INFO L93 Difference]: Finished difference Result 4844 states and 7178 transitions. [2022-07-14 01:15:12,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 01:15:12,774 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 [2022-07-14 01:15:12,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:15:12,788 INFO L225 Difference]: With dead ends: 4844 [2022-07-14 01:15:12,788 INFO L226 Difference]: Without dead ends: 3076 [2022-07-14 01:15:12,794 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 [2022-07-14 01:15:12,795 INFO L413 NwaCegarLoop]: 1337 mSDtfsCounter, 915 mSDsluCounter, 4985 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-07-14 01:15:12,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 6322 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-14 01:15:12,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2022-07-14 01:15:12,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 1793. [2022-07-14 01:15:12,848 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) [2022-07-14 01:15:12,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2551 transitions. [2022-07-14 01:15:12,855 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2551 transitions. Word has length 32 [2022-07-14 01:15:12,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:15:12,855 INFO L495 AbstractCegarLoop]: Abstraction has 1793 states and 2551 transitions. [2022-07-14 01:15:12,855 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) [2022-07-14 01:15:12,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2551 transitions. [2022-07-14 01:15:12,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-14 01:15:12,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:15:12,856 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] [2022-07-14 01:15:12,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 01:15:12,857 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:15:12,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:15:12,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1935624722, now seen corresponding path program 1 times [2022-07-14 01:15:12,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:15:12,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22353657] [2022-07-14 01:15:12,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:15:12,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:15:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:13,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:15:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:13,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:15:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 01:15:13,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:15:13,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22353657] [2022-07-14 01:15:13,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22353657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:15:13,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:15:13,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 01:15:13,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343012919] [2022-07-14 01:15:13,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:15:13,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 01:15:13,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:15:13,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 01:15:13,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 01:15:13,322 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) [2022-07-14 01:15:13,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:15:13,844 INFO L93 Difference]: Finished difference Result 1877 states and 2700 transitions. [2022-07-14 01:15:13,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 01:15:13,845 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 [2022-07-14 01:15:13,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:15:13,853 INFO L225 Difference]: With dead ends: 1877 [2022-07-14 01:15:13,853 INFO L226 Difference]: Without dead ends: 1874 [2022-07-14 01:15:13,854 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 [2022-07-14 01:15:13,854 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 805 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 01:15:13,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 1240 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 01:15:13,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2022-07-14 01:15:13,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1792. [2022-07-14 01:15:13,895 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) [2022-07-14 01:15:13,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2549 transitions. [2022-07-14 01:15:13,902 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2549 transitions. Word has length 32 [2022-07-14 01:15:13,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:15:13,903 INFO L495 AbstractCegarLoop]: Abstraction has 1792 states and 2549 transitions. [2022-07-14 01:15:13,903 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) [2022-07-14 01:15:13,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2549 transitions. [2022-07-14 01:15:13,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-14 01:15:13,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:15:13,906 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] [2022-07-14 01:15:13,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 01:15:13,907 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:15:13,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:15:13,907 INFO L85 PathProgramCache]: Analyzing trace with hash 125104557, now seen corresponding path program 1 times [2022-07-14 01:15:13,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:15:13,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586774087] [2022-07-14 01:15:13,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:15:13,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:15:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:14,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:15:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:14,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:15:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:14,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 01:15:14,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:15:14,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586774087] [2022-07-14 01:15:14,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586774087] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:15:14,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:15:14,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 01:15:14,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150174863] [2022-07-14 01:15:14,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:15:14,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 01:15:14,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:15:14,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 01:15:14,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 01:15:14,286 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) [2022-07-14 01:15:14,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:15:14,808 INFO L93 Difference]: Finished difference Result 1876 states and 2698 transitions. [2022-07-14 01:15:14,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 01:15:14,809 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 [2022-07-14 01:15:14,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:15:14,817 INFO L225 Difference]: With dead ends: 1876 [2022-07-14 01:15:14,817 INFO L226 Difference]: Without dead ends: 1873 [2022-07-14 01:15:14,818 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 [2022-07-14 01:15:14,819 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 802 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 01:15:14,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1237 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 01:15:14,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2022-07-14 01:15:14,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1791. [2022-07-14 01:15:14,861 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) [2022-07-14 01:15:14,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2547 transitions. [2022-07-14 01:15:14,866 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2547 transitions. Word has length 33 [2022-07-14 01:15:14,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:15:14,867 INFO L495 AbstractCegarLoop]: Abstraction has 1791 states and 2547 transitions. [2022-07-14 01:15:14,867 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) [2022-07-14 01:15:14,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2547 transitions. [2022-07-14 01:15:14,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-14 01:15:14,869 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:15:14,869 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] [2022-07-14 01:15:14,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-14 01:15:14,870 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:15:14,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:15:14,870 INFO L85 PathProgramCache]: Analyzing trace with hash -416792367, now seen corresponding path program 1 times [2022-07-14 01:15:14,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:15:14,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448370957] [2022-07-14 01:15:14,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:15:14,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:15:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:15,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:15:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:15,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:15:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 01:15:15,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:15:15,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448370957] [2022-07-14 01:15:15,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448370957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:15:15,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:15:15,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 01:15:15,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048092435] [2022-07-14 01:15:15,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:15:15,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 01:15:15,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:15:15,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 01:15:15,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 01:15:15,260 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) [2022-07-14 01:15:16,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:15:16,092 INFO L93 Difference]: Finished difference Result 5089 states and 7303 transitions. [2022-07-14 01:15:16,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 01:15:16,093 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 [2022-07-14 01:15:16,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:15:16,107 INFO L225 Difference]: With dead ends: 5089 [2022-07-14 01:15:16,107 INFO L226 Difference]: Without dead ends: 3289 [2022-07-14 01:15:16,113 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 [2022-07-14 01:15:16,115 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 803 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-07-14 01:15:16,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1846 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-14 01:15:16,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2022-07-14 01:15:16,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 3186. [2022-07-14 01:15:16,188 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) [2022-07-14 01:15:16,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 4543 transitions. [2022-07-14 01:15:16,199 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 4543 transitions. Word has length 34 [2022-07-14 01:15:16,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:15:16,199 INFO L495 AbstractCegarLoop]: Abstraction has 3186 states and 4543 transitions. [2022-07-14 01:15:16,200 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) [2022-07-14 01:15:16,200 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 4543 transitions. [2022-07-14 01:15:16,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-14 01:15:16,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:15:16,202 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] [2022-07-14 01:15:16,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-14 01:15:16,203 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:15:16,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:15:16,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1540623621, now seen corresponding path program 1 times [2022-07-14 01:15:16,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:15:16,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726934142] [2022-07-14 01:15:16,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:15:16,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:15:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:16,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:15:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:16,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:15:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:16,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-14 01:15:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:16,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:15:16,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:16,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:15:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:16,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 01:15:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:16,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 01:15:16,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:15:16,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726934142] [2022-07-14 01:15:16,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726934142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:15:16,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:15:16,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 01:15:16,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757528350] [2022-07-14 01:15:16,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:15:16,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 01:15:16,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:15:16,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 01:15:16,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 01:15:16,680 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) [2022-07-14 01:15:19,742 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:15:21,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:15:23,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:15:23,150 INFO L93 Difference]: Finished difference Result 8718 states and 12635 transitions. [2022-07-14 01:15:23,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 01:15:23,151 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 [2022-07-14 01:15:23,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:15:23,176 INFO L225 Difference]: With dead ends: 8718 [2022-07-14 01:15:23,177 INFO L226 Difference]: Without dead ends: 5535 [2022-07-14 01:15:23,187 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 [2022-07-14 01:15:23,188 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 1103 mSDsluCounter, 1628 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 568 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s 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 [2022-07-14 01:15:23,188 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] [2022-07-14 01:15:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5535 states. [2022-07-14 01:15:23,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5535 to 4738. [2022-07-14 01:15:23,317 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) [2022-07-14 01:15:23,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4738 states to 4738 states and 6723 transitions. [2022-07-14 01:15:23,333 INFO L78 Accepts]: Start accepts. Automaton has 4738 states and 6723 transitions. Word has length 66 [2022-07-14 01:15:23,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:15:23,334 INFO L495 AbstractCegarLoop]: Abstraction has 4738 states and 6723 transitions. [2022-07-14 01:15:23,334 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) [2022-07-14 01:15:23,334 INFO L276 IsEmpty]: Start isEmpty. Operand 4738 states and 6723 transitions. [2022-07-14 01:15:23,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-14 01:15:23,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:15:23,337 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] [2022-07-14 01:15:23,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-14 01:15:23,338 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:15:23,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:15:23,338 INFO L85 PathProgramCache]: Analyzing trace with hash 127935254, now seen corresponding path program 1 times [2022-07-14 01:15:23,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:15:23,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040212951] [2022-07-14 01:15:23,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:15:23,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:15:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:23,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 01:15:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:23,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-14 01:15:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:23,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-14 01:15:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:23,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:15:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:23,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:15:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:23,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:15:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:23,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-14 01:15:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:23,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-14 01:15:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:23,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-14 01:15:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:23,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-14 01:15:23,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:15:23,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040212951] [2022-07-14 01:15:23,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040212951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:15:23,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:15:23,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 01:15:23,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854521693] [2022-07-14 01:15:23,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:15:23,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 01:15:23,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:15:23,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 01:15:23,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-14 01:15:23,846 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) [2022-07-14 01:15:26,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:15:27,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:15:27,863 INFO L93 Difference]: Finished difference Result 11124 states and 15869 transitions. [2022-07-14 01:15:27,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 01:15:27,864 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 [2022-07-14 01:15:27,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:15:27,887 INFO L225 Difference]: With dead ends: 11124 [2022-07-14 01:15:27,887 INFO L226 Difference]: Without dead ends: 6389 [2022-07-14 01:15:27,900 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 [2022-07-14 01:15:27,901 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, 3.8s IncrementalHoareTripleChecker+Time [2022-07-14 01:15:27,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 2140 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 1102 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-07-14 01:15:27,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6389 states. [2022-07-14 01:15:28,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6389 to 6142. [2022-07-14 01:15:28,063 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) [2022-07-14 01:15:28,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 8723 transitions. [2022-07-14 01:15:28,077 INFO L78 Accepts]: Start accepts. Automaton has 6142 states and 8723 transitions. Word has length 85 [2022-07-14 01:15:28,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:15:28,078 INFO L495 AbstractCegarLoop]: Abstraction has 6142 states and 8723 transitions. [2022-07-14 01:15:28,078 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) [2022-07-14 01:15:28,078 INFO L276 IsEmpty]: Start isEmpty. Operand 6142 states and 8723 transitions. [2022-07-14 01:15:28,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-14 01:15:28,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:15:28,080 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] [2022-07-14 01:15:28,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-14 01:15:28,081 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:15:28,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:15:28,081 INFO L85 PathProgramCache]: Analyzing trace with hash 986755271, now seen corresponding path program 1 times [2022-07-14 01:15:28,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:15:28,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459913637] [2022-07-14 01:15:28,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:15:28,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:15:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:28,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:15:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:28,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:15:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:28,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-14 01:15:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:28,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:15:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:28,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:15:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:28,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 01:15:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:28,509 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-14 01:15:28,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:15:28,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459913637] [2022-07-14 01:15:28,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459913637] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:15:28,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:15:28,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 01:15:28,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683883020] [2022-07-14 01:15:28,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:15:28,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 01:15:28,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:15:28,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 01:15:28,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 01:15:28,512 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) [2022-07-14 01:15:31,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:15:34,412 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:15:36,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:15:36,410 INFO L93 Difference]: Finished difference Result 15372 states and 22173 transitions. [2022-07-14 01:15:36,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 01:15:36,420 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 [2022-07-14 01:15:36,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:15:36,454 INFO L225 Difference]: With dead ends: 15372 [2022-07-14 01:15:36,454 INFO L226 Difference]: Without dead ends: 9233 [2022-07-14 01:15:36,472 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 [2022-07-14 01:15:36,472 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, 7.6s IncrementalHoareTripleChecker+Time [2022-07-14 01:15:36,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 4263 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1367 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2022-07-14 01:15:36,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9233 states. [2022-07-14 01:15:36,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9233 to 8128. [2022-07-14 01:15:36,738 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) [2022-07-14 01:15:36,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 11501 transitions. [2022-07-14 01:15:36,759 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 11501 transitions. Word has length 86 [2022-07-14 01:15:36,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:15:36,759 INFO L495 AbstractCegarLoop]: Abstraction has 8128 states and 11501 transitions. [2022-07-14 01:15:36,759 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) [2022-07-14 01:15:36,760 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 11501 transitions. [2022-07-14 01:15:36,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-14 01:15:36,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:15:36,763 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] [2022-07-14 01:15:36,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-14 01:15:36,764 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:15:36,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:15:36,764 INFO L85 PathProgramCache]: Analyzing trace with hash -216719008, now seen corresponding path program 1 times [2022-07-14 01:15:36,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:15:36,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461266386] [2022-07-14 01:15:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:15:36,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:15:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:37,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:15:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:37,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:15:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:37,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-14 01:15:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:37,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:15:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:37,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:15:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:37,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 01:15:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:37,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:15:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:37,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:15:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:37,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:15:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:37,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-14 01:15:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:37,223 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-14 01:15:37,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:15:37,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461266386] [2022-07-14 01:15:37,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461266386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:15:37,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:15:37,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 01:15:37,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471263455] [2022-07-14 01:15:37,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:15:37,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 01:15:37,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:15:37,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 01:15:37,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 01:15:37,234 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) [2022-07-14 01:15:39,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:15:41,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:15:44,345 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:15:47,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:15:47,111 INFO L93 Difference]: Finished difference Result 19602 states and 28161 transitions. [2022-07-14 01:15:47,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-14 01:15:47,112 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 [2022-07-14 01:15:47,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:15:47,152 INFO L225 Difference]: With dead ends: 19602 [2022-07-14 01:15:47,153 INFO L226 Difference]: Without dead ends: 11477 [2022-07-14 01:15:47,174 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 [2022-07-14 01:15:47,175 INFO L413 NwaCegarLoop]: 1266 mSDtfsCounter, 1075 mSDsluCounter, 2630 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 645 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 3896 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-07-14 01:15:47,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 3896 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 2332 Invalid, 2 Unknown, 0 Unchecked, 9.5s Time] [2022-07-14 01:15:47,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11477 states. [2022-07-14 01:15:47,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11477 to 10110. [2022-07-14 01:15:47,419 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) [2022-07-14 01:15:47,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10110 states to 10110 states and 14279 transitions. [2022-07-14 01:15:47,446 INFO L78 Accepts]: Start accepts. Automaton has 10110 states and 14279 transitions. Word has length 117 [2022-07-14 01:15:47,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:15:47,447 INFO L495 AbstractCegarLoop]: Abstraction has 10110 states and 14279 transitions. [2022-07-14 01:15:47,447 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) [2022-07-14 01:15:47,447 INFO L276 IsEmpty]: Start isEmpty. Operand 10110 states and 14279 transitions. [2022-07-14 01:15:47,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-14 01:15:47,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:15:47,457 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] [2022-07-14 01:15:47,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-14 01:15:47,457 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:15:47,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:15:47,457 INFO L85 PathProgramCache]: Analyzing trace with hash 504148532, now seen corresponding path program 1 times [2022-07-14 01:15:47,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:15:47,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744049593] [2022-07-14 01:15:47,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:15:47,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:15:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:47,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:15:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:47,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:15:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:47,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-14 01:15:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:47,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:15:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:47,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:15:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:47,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-14 01:15:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:47,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:15:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:47,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:15:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:47,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:15:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:47,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-14 01:15:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:47,844 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 01:15:47,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:15:47,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744049593] [2022-07-14 01:15:47,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744049593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:15:47,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:15:47,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 01:15:47,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429317724] [2022-07-14 01:15:47,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:15:47,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 01:15:47,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:15:47,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 01:15:47,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 01:15:47,846 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) [2022-07-14 01:15:51,242 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:15:53,600 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:15:55,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:15:55,995 INFO L93 Difference]: Finished difference Result 23836 states and 34157 transitions. [2022-07-14 01:15:55,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-14 01:15:55,996 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 [2022-07-14 01:15:55,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:15:56,049 INFO L225 Difference]: With dead ends: 23836 [2022-07-14 01:15:56,049 INFO L226 Difference]: Without dead ends: 13729 [2022-07-14 01:15:56,077 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 [2022-07-14 01:15:56,079 INFO L413 NwaCegarLoop]: 1293 mSDtfsCounter, 1168 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 2003 mSolverCounterSat, 785 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s 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 [2022-07-14 01:15:56,079 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] [2022-07-14 01:15:56,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13729 states. [2022-07-14 01:15:56,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13729 to 12092. [2022-07-14 01:15:56,461 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) [2022-07-14 01:15:56,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12092 states to 12092 states and 17057 transitions. [2022-07-14 01:15:56,488 INFO L78 Accepts]: Start accepts. Automaton has 12092 states and 17057 transitions. Word has length 119 [2022-07-14 01:15:56,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:15:56,488 INFO L495 AbstractCegarLoop]: Abstraction has 12092 states and 17057 transitions. [2022-07-14 01:15:56,488 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) [2022-07-14 01:15:56,488 INFO L276 IsEmpty]: Start isEmpty. Operand 12092 states and 17057 transitions. [2022-07-14 01:15:56,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-14 01:15:56,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:15:56,492 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] [2022-07-14 01:15:56,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-14 01:15:56,493 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:15:56,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:15:56,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1210000877, now seen corresponding path program 1 times [2022-07-14 01:15:56,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:15:56,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240624051] [2022-07-14 01:15:56,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:15:56,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:15:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:56,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:15:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:56,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:15:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:56,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-14 01:15:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:56,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:15:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:56,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:15:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:56,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 01:15:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:56,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:15:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:56,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:15:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:56,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:15:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:56,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-14 01:15:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:15:56,861 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-14 01:15:56,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:15:56,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240624051] [2022-07-14 01:15:56,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240624051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:15:56,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:15:56,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 01:15:56,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074974408] [2022-07-14 01:15:56,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:15:56,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 01:15:56,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:15:56,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 01:15:56,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 01:15:56,863 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) [2022-07-14 01:15:59,861 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 [] [2022-07-14 01:16:01,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:16:04,355 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:16:07,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:16:07,137 INFO L93 Difference]: Finished difference Result 28070 states and 40153 transitions. [2022-07-14 01:16:07,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-14 01:16:07,138 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 [2022-07-14 01:16:07,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:16:07,190 INFO L225 Difference]: With dead ends: 28070 [2022-07-14 01:16:07,190 INFO L226 Difference]: Without dead ends: 15981 [2022-07-14 01:16:07,214 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 [2022-07-14 01:16:07,215 INFO L413 NwaCegarLoop]: 1279 mSDtfsCounter, 1072 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 644 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 3956 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-07-14 01:16:07,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 3956 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 2325 Invalid, 2 Unknown, 0 Unchecked, 9.8s Time] [2022-07-14 01:16:07,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15981 states. [2022-07-14 01:16:07,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15981 to 14074. [2022-07-14 01:16:07,556 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) [2022-07-14 01:16:07,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14074 states to 14074 states and 19835 transitions. [2022-07-14 01:16:07,594 INFO L78 Accepts]: Start accepts. Automaton has 14074 states and 19835 transitions. Word has length 119 [2022-07-14 01:16:07,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:16:07,594 INFO L495 AbstractCegarLoop]: Abstraction has 14074 states and 19835 transitions. [2022-07-14 01:16:07,595 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) [2022-07-14 01:16:07,595 INFO L276 IsEmpty]: Start isEmpty. Operand 14074 states and 19835 transitions. [2022-07-14 01:16:07,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-14 01:16:07,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:16:07,601 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] [2022-07-14 01:16:07,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-14 01:16:07,601 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:16:07,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:16:07,602 INFO L85 PathProgramCache]: Analyzing trace with hash 278316373, now seen corresponding path program 1 times [2022-07-14 01:16:07,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:16:07,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860751579] [2022-07-14 01:16:07,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:16:07,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:16:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:08,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:16:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:08,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:08,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-14 01:16:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:08,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:08,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:16:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:08,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 01:16:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:08,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:08,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:16:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:08,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:16:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:08,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 01:16:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-14 01:16:08,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:16:08,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860751579] [2022-07-14 01:16:08,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860751579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:16:08,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:16:08,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-14 01:16:08,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588225653] [2022-07-14 01:16:08,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:16:08,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 01:16:08,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:16:08,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 01:16:08,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-14 01:16:08,157 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) [2022-07-14 01:16:11,427 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:16:13,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:16:15,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:16:15,715 INFO L93 Difference]: Finished difference Result 30035 states and 42747 transitions. [2022-07-14 01:16:15,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 01:16:15,715 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 [2022-07-14 01:16:15,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:16:15,777 INFO L225 Difference]: With dead ends: 30035 [2022-07-14 01:16:15,778 INFO L226 Difference]: Without dead ends: 15964 [2022-07-14 01:16:15,814 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 [2022-07-14 01:16:15,815 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 1148 mSDsluCounter, 2172 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 546 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s 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, 7.1s IncrementalHoareTripleChecker+Time [2022-07-14 01:16:15,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 2890 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [546 Valid, 1798 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2022-07-14 01:16:15,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15964 states. [2022-07-14 01:16:16,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15964 to 14074. [2022-07-14 01:16:16,314 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) [2022-07-14 01:16:16,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14074 states to 14074 states and 19831 transitions. [2022-07-14 01:16:16,349 INFO L78 Accepts]: Start accepts. Automaton has 14074 states and 19831 transitions. Word has length 120 [2022-07-14 01:16:16,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:16:16,349 INFO L495 AbstractCegarLoop]: Abstraction has 14074 states and 19831 transitions. [2022-07-14 01:16:16,349 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) [2022-07-14 01:16:16,349 INFO L276 IsEmpty]: Start isEmpty. Operand 14074 states and 19831 transitions. [2022-07-14 01:16:16,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-14 01:16:16,353 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:16:16,353 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] [2022-07-14 01:16:16,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-14 01:16:16,354 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:16:16,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:16:16,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1220157427, now seen corresponding path program 1 times [2022-07-14 01:16:16,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:16:16,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780623411] [2022-07-14 01:16:16,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:16:16,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:16:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:16,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:16:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:16,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:16,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-14 01:16:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:16,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:16,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:16:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:16,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 01:16:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:16,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:16,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:16:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:16,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:16:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:16,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-14 01:16:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-14 01:16:16,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:16:16,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780623411] [2022-07-14 01:16:16,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780623411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:16:16,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:16:16,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-14 01:16:16,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179625309] [2022-07-14 01:16:16,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:16:16,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 01:16:16,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:16:16,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 01:16:16,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-14 01:16:16,747 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) [2022-07-14 01:16:19,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:16:21,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:16:21,694 INFO L93 Difference]: Finished difference Result 30035 states and 42739 transitions. [2022-07-14 01:16:21,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 01:16:21,695 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 [2022-07-14 01:16:21,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:16:21,746 INFO L225 Difference]: With dead ends: 30035 [2022-07-14 01:16:21,746 INFO L226 Difference]: Without dead ends: 15964 [2022-07-14 01:16:21,863 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 [2022-07-14 01:16:21,864 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 1387 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 815 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s 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, 4.5s IncrementalHoareTripleChecker+Time [2022-07-14 01:16:21,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 2537 Invalid, 2274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [815 Valid, 1458 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-07-14 01:16:21,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15964 states. [2022-07-14 01:16:22,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15964 to 14074. [2022-07-14 01:16:22,203 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) [2022-07-14 01:16:22,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14074 states to 14074 states and 19827 transitions. [2022-07-14 01:16:22,241 INFO L78 Accepts]: Start accepts. Automaton has 14074 states and 19827 transitions. Word has length 123 [2022-07-14 01:16:22,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:16:22,242 INFO L495 AbstractCegarLoop]: Abstraction has 14074 states and 19827 transitions. [2022-07-14 01:16:22,242 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) [2022-07-14 01:16:22,242 INFO L276 IsEmpty]: Start isEmpty. Operand 14074 states and 19827 transitions. [2022-07-14 01:16:22,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-14 01:16:22,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:16:22,251 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] [2022-07-14 01:16:22,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-14 01:16:22,251 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:16:22,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:16:22,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1039882275, now seen corresponding path program 1 times [2022-07-14 01:16:22,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:16:22,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789583528] [2022-07-14 01:16:22,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:16:22,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:16:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:22,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:16:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:22,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:22,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-14 01:16:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:22,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:22,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:16:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:22,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-14 01:16:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:22,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:22,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:16:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:22,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:16:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:22,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 01:16:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 01:16:22,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:16:22,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789583528] [2022-07-14 01:16:22,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789583528] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:16:22,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:16:22,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-14 01:16:22,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321826888] [2022-07-14 01:16:22,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:16:22,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 01:16:22,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:16:22,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 01:16:22,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-14 01:16:22,638 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) [2022-07-14 01:16:25,845 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:16:27,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:16:27,806 INFO L93 Difference]: Finished difference Result 30035 states and 42731 transitions. [2022-07-14 01:16:27,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 01:16:27,806 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 [2022-07-14 01:16:27,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:16:27,853 INFO L225 Difference]: With dead ends: 30035 [2022-07-14 01:16:27,854 INFO L226 Difference]: Without dead ends: 15964 [2022-07-14 01:16:27,881 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 [2022-07-14 01:16:27,882 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 1368 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 814 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s 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, 4.6s IncrementalHoareTripleChecker+Time [2022-07-14 01:16:27,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 2542 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [814 Valid, 1495 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-07-14 01:16:27,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15964 states. [2022-07-14 01:16:28,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15964 to 14074. [2022-07-14 01:16:28,244 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) [2022-07-14 01:16:28,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14074 states to 14074 states and 19823 transitions. [2022-07-14 01:16:28,275 INFO L78 Accepts]: Start accepts. Automaton has 14074 states and 19823 transitions. Word has length 120 [2022-07-14 01:16:28,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:16:28,276 INFO L495 AbstractCegarLoop]: Abstraction has 14074 states and 19823 transitions. [2022-07-14 01:16:28,276 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) [2022-07-14 01:16:28,276 INFO L276 IsEmpty]: Start isEmpty. Operand 14074 states and 19823 transitions. [2022-07-14 01:16:28,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-14 01:16:28,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:16:28,280 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] [2022-07-14 01:16:28,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-14 01:16:28,280 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:16:28,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:16:28,281 INFO L85 PathProgramCache]: Analyzing trace with hash 580686427, now seen corresponding path program 1 times [2022-07-14 01:16:28,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:16:28,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201150539] [2022-07-14 01:16:28,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:16:28,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:16:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:28,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:16:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:28,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:28,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-14 01:16:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:28,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:28,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:16:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:28,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 01:16:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:28,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:28,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:16:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:28,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:16:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:28,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-14 01:16:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-14 01:16:28,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:16:28,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201150539] [2022-07-14 01:16:28,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201150539] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 01:16:28,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371300244] [2022-07-14 01:16:28,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:16:28,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 01:16:28,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 01:16:28,698 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 01:16:28,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 01:16:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:30,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 12383 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 01:16:30,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:16:30,283 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-14 01:16:30,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:16:30,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371300244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:16:30,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 01:16:30,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-14 01:16:30,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286932574] [2022-07-14 01:16:30,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:16:30,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 01:16:30,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:16:30,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 01:16:30,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-14 01:16:30,286 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) [2022-07-14 01:16:31,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:16:31,559 INFO L93 Difference]: Finished difference Result 33201 states and 47327 transitions. [2022-07-14 01:16:31,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 01:16:31,560 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 [2022-07-14 01:16:31,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:16:31,598 INFO L225 Difference]: With dead ends: 33201 [2022-07-14 01:16:31,598 INFO L226 Difference]: Without dead ends: 19074 [2022-07-14 01:16:31,618 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 [2022-07-14 01:16:31,619 INFO L413 NwaCegarLoop]: 983 mSDtfsCounter, 297 mSDsluCounter, 5642 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-07-14 01:16:31,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 6625 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-14 01:16:31,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19074 states. [2022-07-14 01:16:32,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19074 to 14078. [2022-07-14 01:16:32,016 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) [2022-07-14 01:16:32,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14078 states to 14078 states and 19785 transitions. [2022-07-14 01:16:32,047 INFO L78 Accepts]: Start accepts. Automaton has 14078 states and 19785 transitions. Word has length 120 [2022-07-14 01:16:32,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:16:32,048 INFO L495 AbstractCegarLoop]: Abstraction has 14078 states and 19785 transitions. [2022-07-14 01:16:32,048 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) [2022-07-14 01:16:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 14078 states and 19785 transitions. [2022-07-14 01:16:32,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-14 01:16:32,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:16:32,052 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] [2022-07-14 01:16:32,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-14 01:16:32,256 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 [2022-07-14 01:16:32,256 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:16:32,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:16:32,256 INFO L85 PathProgramCache]: Analyzing trace with hash 559133422, now seen corresponding path program 1 times [2022-07-14 01:16:32,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:16:32,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037239925] [2022-07-14 01:16:32,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:16:32,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:16:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:32,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:16:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:32,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:32,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 01:16:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:32,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:32,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-14 01:16:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:32,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:32,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:16:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:32,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-14 01:16:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:32,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:32,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:16:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:32,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:16:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:32,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-14 01:16:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:32,653 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-14 01:16:32,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:16:32,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037239925] [2022-07-14 01:16:32,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037239925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:16:32,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:16:32,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 01:16:32,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677723274] [2022-07-14 01:16:32,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:16:32,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 01:16:32,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:16:32,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 01:16:32,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-14 01:16:32,655 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) [2022-07-14 01:16:36,487 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:16:38,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:16:41,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:16:41,300 INFO L93 Difference]: Finished difference Result 41426 states and 60219 transitions. [2022-07-14 01:16:41,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 01:16:41,301 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 [2022-07-14 01:16:41,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:16:41,380 INFO L225 Difference]: With dead ends: 41426 [2022-07-14 01:16:41,380 INFO L226 Difference]: Without dead ends: 27351 [2022-07-14 01:16:41,415 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 [2022-07-14 01:16:41,416 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 1105 mSDsluCounter, 3263 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 388 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s 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, 7.9s IncrementalHoareTripleChecker+Time [2022-07-14 01:16:41,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 4247 Invalid, 2361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 1971 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2022-07-14 01:16:41,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27351 states. [2022-07-14 01:16:41,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27351 to 14036. [2022-07-14 01:16:41,990 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) [2022-07-14 01:16:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14036 states to 14036 states and 19687 transitions. [2022-07-14 01:16:42,022 INFO L78 Accepts]: Start accepts. Automaton has 14036 states and 19687 transitions. Word has length 145 [2022-07-14 01:16:42,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:16:42,023 INFO L495 AbstractCegarLoop]: Abstraction has 14036 states and 19687 transitions. [2022-07-14 01:16:42,023 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) [2022-07-14 01:16:42,023 INFO L276 IsEmpty]: Start isEmpty. Operand 14036 states and 19687 transitions. [2022-07-14 01:16:42,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-14 01:16:42,027 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:16:42,027 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] [2022-07-14 01:16:42,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-14 01:16:42,027 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:16:42,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:16:42,028 INFO L85 PathProgramCache]: Analyzing trace with hash 823178437, now seen corresponding path program 1 times [2022-07-14 01:16:42,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:16:42,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246042783] [2022-07-14 01:16:42,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:16:42,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:16:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:42,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:16:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:42,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:42,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-14 01:16:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:42,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:42,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-14 01:16:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:42,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:42,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-14 01:16:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:42,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:42,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:16:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:42,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-14 01:16:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:42,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:42,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:16:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:42,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:16:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:42,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-14 01:16:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:42,431 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-14 01:16:42,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:16:42,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246042783] [2022-07-14 01:16:42,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246042783] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:16:42,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:16:42,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 01:16:42,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203136055] [2022-07-14 01:16:42,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:16:42,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 01:16:42,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:16:42,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 01:16:42,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-14 01:16:42,433 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) [2022-07-14 01:16:45,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:16:48,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:16:48,360 INFO L93 Difference]: Finished difference Result 42564 states and 61847 transitions. [2022-07-14 01:16:48,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 01:16:48,361 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 [2022-07-14 01:16:48,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:16:48,431 INFO L225 Difference]: With dead ends: 42564 [2022-07-14 01:16:48,432 INFO L226 Difference]: Without dead ends: 28531 [2022-07-14 01:16:48,456 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 [2022-07-14 01:16:48,456 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 [2022-07-14 01:16:48,456 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] [2022-07-14 01:16:48,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28531 states. [2022-07-14 01:16:48,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28531 to 14064. [2022-07-14 01:16:48,921 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) [2022-07-14 01:16:48,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14064 states to 14064 states and 19715 transitions. [2022-07-14 01:16:48,956 INFO L78 Accepts]: Start accepts. Automaton has 14064 states and 19715 transitions. Word has length 148 [2022-07-14 01:16:48,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:16:48,957 INFO L495 AbstractCegarLoop]: Abstraction has 14064 states and 19715 transitions. [2022-07-14 01:16:48,957 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) [2022-07-14 01:16:48,957 INFO L276 IsEmpty]: Start isEmpty. Operand 14064 states and 19715 transitions. [2022-07-14 01:16:48,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-14 01:16:48,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:16:48,960 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] [2022-07-14 01:16:48,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-14 01:16:48,961 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:16:48,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:16:48,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1681591430, now seen corresponding path program 1 times [2022-07-14 01:16:48,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:16:48,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934666484] [2022-07-14 01:16:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:16:48,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:16:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:49,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:16:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:49,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:49,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-14 01:16:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:49,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:49,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-14 01:16:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:49,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:49,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-14 01:16:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:49,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:49,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:16:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:49,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-14 01:16:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:49,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:49,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:16:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:49,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:16:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:49,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-14 01:16:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-14 01:16:49,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:16:49,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934666484] [2022-07-14 01:16:49,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934666484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:16:49,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:16:49,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 01:16:49,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687819764] [2022-07-14 01:16:49,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:16:49,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 01:16:49,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:16:49,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 01:16:49,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 01:16:49,324 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) [2022-07-14 01:16:52,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:16:55,146 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:16:58,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:16:58,172 INFO L93 Difference]: Finished difference Result 45458 states and 64413 transitions. [2022-07-14 01:16:58,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-14 01:16:58,172 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 [2022-07-14 01:16:58,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:16:58,286 INFO L225 Difference]: With dead ends: 45458 [2022-07-14 01:16:58,286 INFO L226 Difference]: Without dead ends: 31397 [2022-07-14 01:16:58,320 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 [2022-07-14 01:16:58,321 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 2035 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 1378 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s 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, 7.5s IncrementalHoareTripleChecker+Time [2022-07-14 01:16:58,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 2267 Invalid, 2730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1378 Valid, 1350 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2022-07-14 01:16:58,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31397 states. [2022-07-14 01:16:59,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31397 to 27546. [2022-07-14 01:16:59,493 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) [2022-07-14 01:16:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27546 states to 27546 states and 38513 transitions. [2022-07-14 01:16:59,564 INFO L78 Accepts]: Start accepts. Automaton has 27546 states and 38513 transitions. Word has length 148 [2022-07-14 01:16:59,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:16:59,564 INFO L495 AbstractCegarLoop]: Abstraction has 27546 states and 38513 transitions. [2022-07-14 01:16:59,564 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) [2022-07-14 01:16:59,564 INFO L276 IsEmpty]: Start isEmpty. Operand 27546 states and 38513 transitions. [2022-07-14 01:16:59,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-14 01:16:59,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:16:59,569 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] [2022-07-14 01:16:59,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-14 01:16:59,570 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:16:59,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:16:59,570 INFO L85 PathProgramCache]: Analyzing trace with hash 606760287, now seen corresponding path program 1 times [2022-07-14 01:16:59,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:16:59,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636603703] [2022-07-14 01:16:59,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:16:59,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:16:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:59,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:16:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:59,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:59,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 01:16:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:59,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:59,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-14 01:16:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:59,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:16:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:59,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:16:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:59,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-14 01:16:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:59,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-14 01:16:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:16:59,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-14 01:17:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:00,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:00,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:17:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:00,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:00,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-14 01:17:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:00,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-14 01:17:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:00,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-14 01:17:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:00,046 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-14 01:17:00,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:17:00,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636603703] [2022-07-14 01:17:00,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636603703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:17:00,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:17:00,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 01:17:00,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37940169] [2022-07-14 01:17:00,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:17:00,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 01:17:00,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:17:00,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 01:17:00,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-14 01:17:00,047 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) [2022-07-14 01:17:03,324 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:17:05,361 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 [] [2022-07-14 01:17:07,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:17:07,659 INFO L93 Difference]: Finished difference Result 46673 states and 64935 transitions. [2022-07-14 01:17:07,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 01:17:07,666 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 [2022-07-14 01:17:07,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:17:07,717 INFO L225 Difference]: With dead ends: 46673 [2022-07-14 01:17:07,719 INFO L226 Difference]: Without dead ends: 19130 [2022-07-14 01:17:07,769 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 [2022-07-14 01:17:07,771 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 1273 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 695 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s 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, 6.5s IncrementalHoareTripleChecker+Time [2022-07-14 01:17:07,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 2062 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [695 Valid, 906 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2022-07-14 01:17:07,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19130 states. [2022-07-14 01:17:08,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19130 to 12295. [2022-07-14 01:17:08,424 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) [2022-07-14 01:17:08,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12295 states to 12295 states and 17393 transitions. [2022-07-14 01:17:08,459 INFO L78 Accepts]: Start accepts. Automaton has 12295 states and 17393 transitions. Word has length 159 [2022-07-14 01:17:08,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:17:08,463 INFO L495 AbstractCegarLoop]: Abstraction has 12295 states and 17393 transitions. [2022-07-14 01:17:08,463 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) [2022-07-14 01:17:08,463 INFO L276 IsEmpty]: Start isEmpty. Operand 12295 states and 17393 transitions. [2022-07-14 01:17:08,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-14 01:17:08,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:17:08,468 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:17:08,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-14 01:17:08,469 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:17:08,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:17:08,469 INFO L85 PathProgramCache]: Analyzing trace with hash 145976228, now seen corresponding path program 1 times [2022-07-14 01:17:08,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:17:08,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737421945] [2022-07-14 01:17:08,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:17:08,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:17:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:08,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:17:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:08,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:08,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 01:17:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:08,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:08,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-14 01:17:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:08,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:08,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-14 01:17:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:08,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:08,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-14 01:17:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:08,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:08,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:17:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:08,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-14 01:17:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:08,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:08,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:17:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:08,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:17:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:08,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-14 01:17:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:08,927 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-14 01:17:08,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:17:08,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737421945] [2022-07-14 01:17:08,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737421945] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 01:17:08,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656840875] [2022-07-14 01:17:08,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:17:08,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 01:17:08,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 01:17:08,929 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 01:17:08,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-14 01:17:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:10,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 12544 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 01:17:10,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:17:10,563 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-14 01:17:10,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:17:10,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656840875] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:17:10,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 01:17:10,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-14 01:17:10,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93993251] [2022-07-14 01:17:10,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:17:10,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 01:17:10,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:17:10,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 01:17:10,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-14 01:17:10,565 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) [2022-07-14 01:17:11,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:17:11,317 INFO L93 Difference]: Finished difference Result 24587 states and 34779 transitions. [2022-07-14 01:17:11,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 01:17:11,317 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 166 [2022-07-14 01:17:11,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:17:11,350 INFO L225 Difference]: With dead ends: 24587 [2022-07-14 01:17:11,351 INFO L226 Difference]: Without dead ends: 12302 [2022-07-14 01:17:11,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-07-14 01:17:11,375 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 27 mSDsluCounter, 3092 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-07-14 01:17:11,375 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] [2022-07-14 01:17:11,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12302 states. [2022-07-14 01:17:11,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12302 to 12197. [2022-07-14 01:17:11,931 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) [2022-07-14 01:17:11,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12197 states to 12197 states and 17265 transitions. [2022-07-14 01:17:11,958 INFO L78 Accepts]: Start accepts. Automaton has 12197 states and 17265 transitions. Word has length 166 [2022-07-14 01:17:11,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:17:11,959 INFO L495 AbstractCegarLoop]: Abstraction has 12197 states and 17265 transitions. [2022-07-14 01:17:11,959 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) [2022-07-14 01:17:11,959 INFO L276 IsEmpty]: Start isEmpty. Operand 12197 states and 17265 transitions. [2022-07-14 01:17:11,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-14 01:17:11,964 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:17:11,964 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] [2022-07-14 01:17:12,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-14 01:17:12,178 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 [2022-07-14 01:17:12,178 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:17:12,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:17:12,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1326215580, now seen corresponding path program 1 times [2022-07-14 01:17:12,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:17:12,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99340509] [2022-07-14 01:17:12,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:17:12,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:17:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:12,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:17:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:12,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:12,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 01:17:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:12,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:12,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-14 01:17:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:12,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:12,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:17:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:12,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-14 01:17:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:12,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:12,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:17:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:12,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-14 01:17:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:12,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:12,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:17:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:12,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:17:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:12,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-14 01:17:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:12,571 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-14 01:17:12,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:17:12,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99340509] [2022-07-14 01:17:12,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99340509] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 01:17:12,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28692983] [2022-07-14 01:17:12,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:17:12,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 01:17:12,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 01:17:12,573 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 01:17:12,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-14 01:17:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:14,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 12607 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 01:17:14,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:17:14,290 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-14 01:17:14,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:17:14,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28692983] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:17:14,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 01:17:14,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2022-07-14 01:17:14,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009057895] [2022-07-14 01:17:14,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:17:14,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 01:17:14,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:17:14,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 01:17:14,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-14 01:17:14,292 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) [2022-07-14 01:17:16,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:17:16,312 INFO L93 Difference]: Finished difference Result 36554 states and 51747 transitions. [2022-07-14 01:17:16,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 01:17:16,315 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 [2022-07-14 01:17:16,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:17:16,433 INFO L225 Difference]: With dead ends: 36554 [2022-07-14 01:17:16,433 INFO L226 Difference]: Without dead ends: 36539 [2022-07-14 01:17:16,447 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 [2022-07-14 01:17:16,447 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 [2022-07-14 01:17:16,447 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] [2022-07-14 01:17:16,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36539 states. [2022-07-14 01:17:17,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36539 to 36477. [2022-07-14 01:17:18,018 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) [2022-07-14 01:17:18,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36477 states to 36477 states and 51645 transitions. [2022-07-14 01:17:18,138 INFO L78 Accepts]: Start accepts. Automaton has 36477 states and 51645 transitions. Word has length 168 [2022-07-14 01:17:18,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:17:18,138 INFO L495 AbstractCegarLoop]: Abstraction has 36477 states and 51645 transitions. [2022-07-14 01:17:18,138 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) [2022-07-14 01:17:18,138 INFO L276 IsEmpty]: Start isEmpty. Operand 36477 states and 51645 transitions. [2022-07-14 01:17:18,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-14 01:17:18,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:17:18,150 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] [2022-07-14 01:17:18,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-14 01:17:18,350 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 [2022-07-14 01:17:18,350 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:17:18,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:17:18,351 INFO L85 PathProgramCache]: Analyzing trace with hash 508576284, now seen corresponding path program 1 times [2022-07-14 01:17:18,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:17:18,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940734391] [2022-07-14 01:17:18,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:17:18,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:17:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:18,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:17:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:18,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:18,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 01:17:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:18,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:18,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-14 01:17:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:18,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:18,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:17:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:18,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-14 01:17:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:18,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:18,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:17:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:18,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-14 01:17:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:18,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 01:17:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:18,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 01:17:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:18,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:18,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:17:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:18,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:18,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-14 01:17:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:18,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-14 01:17:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:18,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-14 01:17:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:18,811 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-14 01:17:18,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:17:18,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940734391] [2022-07-14 01:17:18,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940734391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:17:18,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:17:18,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 01:17:18,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976156264] [2022-07-14 01:17:18,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:17:18,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 01:17:18,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:17:18,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 01:17:18,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-14 01:17:18,812 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) [2022-07-14 01:17:22,624 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 [] [2022-07-14 01:17:24,658 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 [] [2022-07-14 01:17:27,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:17:27,906 INFO L93 Difference]: Finished difference Result 78432 states and 112243 transitions. [2022-07-14 01:17:27,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 01:17:27,907 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 [2022-07-14 01:17:27,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:17:28,044 INFO L225 Difference]: With dead ends: 78432 [2022-07-14 01:17:28,045 INFO L226 Difference]: Without dead ends: 41973 [2022-07-14 01:17:28,115 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 [2022-07-14 01:17:28,116 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 479 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 330 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-07-14 01:17:28,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 2471 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 1337 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2022-07-14 01:17:28,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41973 states. [2022-07-14 01:17:29,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41973 to 36519. [2022-07-14 01:17:29,777 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) [2022-07-14 01:17:29,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36519 states to 36519 states and 51687 transitions. [2022-07-14 01:17:29,869 INFO L78 Accepts]: Start accepts. Automaton has 36519 states and 51687 transitions. Word has length 176 [2022-07-14 01:17:29,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:17:29,870 INFO L495 AbstractCegarLoop]: Abstraction has 36519 states and 51687 transitions. [2022-07-14 01:17:29,870 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) [2022-07-14 01:17:29,870 INFO L276 IsEmpty]: Start isEmpty. Operand 36519 states and 51687 transitions. [2022-07-14 01:17:29,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-14 01:17:29,880 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:17:29,880 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] [2022-07-14 01:17:29,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-14 01:17:29,880 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:17:29,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:17:29,880 INFO L85 PathProgramCache]: Analyzing trace with hash -300770342, now seen corresponding path program 1 times [2022-07-14 01:17:29,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:17:29,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445542311] [2022-07-14 01:17:29,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:17:29,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:17:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:30,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:17:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:30,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:30,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 01:17:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:30,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:30,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-14 01:17:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:30,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:30,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:17:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:30,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-14 01:17:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:30,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:30,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:17:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:30,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-14 01:17:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:30,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-14 01:17:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:30,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-14 01:17:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:30,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:30,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:17:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:30,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:30,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-14 01:17:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:30,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-14 01:17:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:30,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-14 01:17:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:30,372 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-14 01:17:30,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:17:30,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445542311] [2022-07-14 01:17:30,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445542311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:17:30,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:17:30,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 01:17:30,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409542058] [2022-07-14 01:17:30,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:17:30,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 01:17:30,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:17:30,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 01:17:30,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-14 01:17:30,374 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) [2022-07-14 01:17:34,442 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:17:38,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:17:38,068 INFO L93 Difference]: Finished difference Result 78476 states and 111992 transitions. [2022-07-14 01:17:38,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-14 01:17:38,069 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 [2022-07-14 01:17:38,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:17:38,279 INFO L225 Difference]: With dead ends: 78476 [2022-07-14 01:17:38,279 INFO L226 Difference]: Without dead ends: 41975 [2022-07-14 01:17:38,342 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 [2022-07-14 01:17:38,343 INFO L413 NwaCegarLoop]: 1158 mSDtfsCounter, 1409 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 1054 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 3131 SdHoareTripleChecker+Invalid, 2558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1054 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-14 01:17:38,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 3131 Invalid, 2558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1054 Valid, 1503 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-07-14 01:17:38,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41975 states. [2022-07-14 01:17:39,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41975 to 35846. [2022-07-14 01:17:39,767 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) [2022-07-14 01:17:39,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35846 states to 35846 states and 50576 transitions. [2022-07-14 01:17:39,854 INFO L78 Accepts]: Start accepts. Automaton has 35846 states and 50576 transitions. Word has length 176 [2022-07-14 01:17:39,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:17:39,854 INFO L495 AbstractCegarLoop]: Abstraction has 35846 states and 50576 transitions. [2022-07-14 01:17:39,854 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) [2022-07-14 01:17:39,854 INFO L276 IsEmpty]: Start isEmpty. Operand 35846 states and 50576 transitions. [2022-07-14 01:17:39,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-14 01:17:39,867 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:17:39,867 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] [2022-07-14 01:17:39,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-14 01:17:39,867 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:17:39,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:17:39,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1860346325, now seen corresponding path program 1 times [2022-07-14 01:17:39,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:17:39,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172359683] [2022-07-14 01:17:39,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:17:39,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:17:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:40,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:17:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:40,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:40,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 01:17:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:40,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:40,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-14 01:17:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:40,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:40,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:17:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:40,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-14 01:17:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:40,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:40,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:17:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:40,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-14 01:17:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:40,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:40,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:17:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:40,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:17:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:40,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-14 01:17:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:40,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:40,442 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-14 01:17:40,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:17:40,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172359683] [2022-07-14 01:17:40,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172359683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:17:40,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:17:40,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 01:17:40,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389934646] [2022-07-14 01:17:40,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:17:40,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 01:17:40,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:17:40,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 01:17:40,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 01:17:40,444 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) [2022-07-14 01:17:43,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:17:46,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:17:46,510 INFO L93 Difference]: Finished difference Result 75599 states and 108075 transitions. [2022-07-14 01:17:46,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-14 01:17:46,511 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 [2022-07-14 01:17:46,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:17:46,612 INFO L225 Difference]: With dead ends: 75599 [2022-07-14 01:17:46,613 INFO L226 Difference]: Without dead ends: 37059 [2022-07-14 01:17:46,675 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 [2022-07-14 01:17:46,676 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 1217 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 796 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 796 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-14 01:17:46,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 1940 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [796 Valid, 753 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-07-14 01:17:46,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37059 states. [2022-07-14 01:17:47,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37059 to 15853. [2022-07-14 01:17:47,611 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) [2022-07-14 01:17:47,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15853 states to 15853 states and 22424 transitions. [2022-07-14 01:17:47,646 INFO L78 Accepts]: Start accepts. Automaton has 15853 states and 22424 transitions. Word has length 179 [2022-07-14 01:17:47,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:17:47,646 INFO L495 AbstractCegarLoop]: Abstraction has 15853 states and 22424 transitions. [2022-07-14 01:17:47,646 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) [2022-07-14 01:17:47,646 INFO L276 IsEmpty]: Start isEmpty. Operand 15853 states and 22424 transitions. [2022-07-14 01:17:47,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-14 01:17:47,652 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:17:47,653 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] [2022-07-14 01:17:47,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-14 01:17:47,653 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:17:47,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:17:47,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1792407628, now seen corresponding path program 1 times [2022-07-14 01:17:47,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:17:47,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081357290] [2022-07-14 01:17:47,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:17:47,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:17:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:47,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:17:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:47,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:47,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 01:17:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:47,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:47,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-14 01:17:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:47,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:47,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:17:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:47,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-14 01:17:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:48,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:48,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:17:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:48,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-14 01:17:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:48,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:17:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:48,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:17:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:48,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:17:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:48,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-14 01:17:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:17:48,018 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-14 01:17:48,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:17:48,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081357290] [2022-07-14 01:17:48,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081357290] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:17:48,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:17:48,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 01:17:48,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612772770] [2022-07-14 01:17:48,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:17:48,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 01:17:48,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:17:48,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 01:17:48,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 01:17:48,020 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) [2022-07-14 01:17:51,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:17:53,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:17:56,148 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:18:00,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:18:00,312 INFO L93 Difference]: Finished difference Result 36922 states and 52975 transitions. [2022-07-14 01:18:00,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-14 01:18:00,312 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 [2022-07-14 01:18:00,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:18:00,379 INFO L225 Difference]: With dead ends: 36922 [2022-07-14 01:18:00,379 INFO L226 Difference]: Without dead ends: 21291 [2022-07-14 01:18:00,417 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 [2022-07-14 01:18:00,417 INFO L413 NwaCegarLoop]: 1166 mSDtfsCounter, 969 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 2226 mSolverCounterSat, 626 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 3513 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 2226 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-07-14 01:18:00,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 3513 Invalid, 2855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 2226 Invalid, 3 Unknown, 0 Unchecked, 10.9s Time] [2022-07-14 01:18:00,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21291 states. [2022-07-14 01:18:01,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21291 to 18238. [2022-07-14 01:18:01,434 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) [2022-07-14 01:18:01,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18238 states to 18238 states and 25779 transitions. [2022-07-14 01:18:01,476 INFO L78 Accepts]: Start accepts. Automaton has 18238 states and 25779 transitions. Word has length 184 [2022-07-14 01:18:01,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:18:01,477 INFO L495 AbstractCegarLoop]: Abstraction has 18238 states and 25779 transitions. [2022-07-14 01:18:01,477 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) [2022-07-14 01:18:01,477 INFO L276 IsEmpty]: Start isEmpty. Operand 18238 states and 25779 transitions. [2022-07-14 01:18:01,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-14 01:18:01,484 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:18:01,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:18:01,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-14 01:18:01,485 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:18:01,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:18:01,485 INFO L85 PathProgramCache]: Analyzing trace with hash -538120027, now seen corresponding path program 1 times [2022-07-14 01:18:01,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:18:01,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358281187] [2022-07-14 01:18:01,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:18:01,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:18:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:01,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:18:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:01,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:01,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 01:18:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:01,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:01,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-14 01:18:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:01,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:01,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:18:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:01,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-14 01:18:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:01,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:01,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:18:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:01,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-14 01:18:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:01,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:01,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:18:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:01,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:18:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:01,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-14 01:18:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:01,834 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-14 01:18:01,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:18:01,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358281187] [2022-07-14 01:18:01,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358281187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:18:01,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:18:01,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 01:18:01,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083186533] [2022-07-14 01:18:01,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:18:01,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 01:18:01,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:18:01,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 01:18:01,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 01:18:01,836 INFO L87 Difference]: Start difference. First operand 18238 states and 25779 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) [2022-07-14 01:18:05,352 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:18:09,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:18:09,509 INFO L93 Difference]: Finished difference Result 42103 states and 60333 transitions. [2022-07-14 01:18:09,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-14 01:18:09,510 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 188 [2022-07-14 01:18:09,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:18:09,585 INFO L225 Difference]: With dead ends: 42103 [2022-07-14 01:18:09,585 INFO L226 Difference]: Without dead ends: 24087 [2022-07-14 01:18:09,616 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 [2022-07-14 01:18:09,617 INFO L413 NwaCegarLoop]: 1177 mSDtfsCounter, 1070 mSDsluCounter, 1881 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 758 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-07-14 01:18:09,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 3058 Invalid, 2491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 1732 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-07-14 01:18:09,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24087 states. [2022-07-14 01:18:10,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24087 to 20623. [2022-07-14 01:18:10,624 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) [2022-07-14 01:18:10,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20623 states to 20623 states and 29134 transitions. [2022-07-14 01:18:10,673 INFO L78 Accepts]: Start accepts. Automaton has 20623 states and 29134 transitions. Word has length 188 [2022-07-14 01:18:10,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:18:10,673 INFO L495 AbstractCegarLoop]: Abstraction has 20623 states and 29134 transitions. [2022-07-14 01:18:10,674 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) [2022-07-14 01:18:10,674 INFO L276 IsEmpty]: Start isEmpty. Operand 20623 states and 29134 transitions. [2022-07-14 01:18:10,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-14 01:18:10,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:18:10,680 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] [2022-07-14 01:18:10,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-14 01:18:10,681 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:18:10,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:18:10,681 INFO L85 PathProgramCache]: Analyzing trace with hash -2142147971, now seen corresponding path program 1 times [2022-07-14 01:18:10,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:18:10,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036628904] [2022-07-14 01:18:10,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:18:10,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:18:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:11,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:18:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:11,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:11,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 01:18:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:11,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:11,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-14 01:18:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:11,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:11,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:18:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:11,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-14 01:18:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:11,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:11,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:18:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:11,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-14 01:18:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:11,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:11,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:18:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:11,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:18:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:11,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-14 01:18:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:11,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:11,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-14 01:18:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-14 01:18:11,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:18:11,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036628904] [2022-07-14 01:18:11,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036628904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:18:11,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:18:11,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 01:18:11,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138223515] [2022-07-14 01:18:11,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:18:11,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 01:18:11,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:18:11,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 01:18:11,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 01:18:11,108 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) [2022-07-14 01:18:14,436 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:18:16,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:18:16,842 INFO L93 Difference]: Finished difference Result 46768 states and 66605 transitions. [2022-07-14 01:18:16,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-14 01:18:16,843 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 [2022-07-14 01:18:16,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:18:16,945 INFO L225 Difference]: With dead ends: 46768 [2022-07-14 01:18:16,945 INFO L226 Difference]: Without dead ends: 26367 [2022-07-14 01:18:16,992 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 [2022-07-14 01:18:16,992 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 1217 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 752 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 752 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-14 01:18:16,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1246 Valid, 2352 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [752 Valid, 848 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-07-14 01:18:17,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26367 states. [2022-07-14 01:18:17,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26367 to 22905. [2022-07-14 01:18:18,004 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) [2022-07-14 01:18:18,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22905 states to 22905 states and 32146 transitions. [2022-07-14 01:18:18,073 INFO L78 Accepts]: Start accepts. Automaton has 22905 states and 32146 transitions. Word has length 191 [2022-07-14 01:18:18,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:18:18,073 INFO L495 AbstractCegarLoop]: Abstraction has 22905 states and 32146 transitions. [2022-07-14 01:18:18,073 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) [2022-07-14 01:18:18,073 INFO L276 IsEmpty]: Start isEmpty. Operand 22905 states and 32146 transitions. [2022-07-14 01:18:18,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-14 01:18:18,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:18:18,081 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, 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] [2022-07-14 01:18:18,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-14 01:18:18,081 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:18:18,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:18:18,082 INFO L85 PathProgramCache]: Analyzing trace with hash -361188191, now seen corresponding path program 1 times [2022-07-14 01:18:18,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:18:18,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718089883] [2022-07-14 01:18:18,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:18:18,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:18:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:18,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:18:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:18,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:18,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 01:18:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:18,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:18,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-14 01:18:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:18,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:18,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:18:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:18,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-14 01:18:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:18,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:18,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:18:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:18,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-14 01:18:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:18,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:18,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:18:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:18,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:18:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:18,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-14 01:18:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:18,548 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-14 01:18:18,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:18:18,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718089883] [2022-07-14 01:18:18,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718089883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:18:18,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:18:18,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 01:18:18,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613288318] [2022-07-14 01:18:18,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:18:18,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 01:18:18,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:18:18,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 01:18:18,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 01:18:18,550 INFO L87 Difference]: Start difference. First operand 22905 states and 32146 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) [2022-07-14 01:18:22,186 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:18:24,921 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:18:29,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:18:29,218 INFO L93 Difference]: Finished difference Result 52064 states and 74032 transitions. [2022-07-14 01:18:29,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-14 01:18:29,218 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 192 [2022-07-14 01:18:29,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:18:29,326 INFO L225 Difference]: With dead ends: 52064 [2022-07-14 01:18:29,327 INFO L226 Difference]: Without dead ends: 29381 [2022-07-14 01:18:29,378 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 [2022-07-14 01:18:29,379 INFO L413 NwaCegarLoop]: 1203 mSDtfsCounter, 1153 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 1766 mSolverCounterSat, 891 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 2659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 891 IncrementalHoareTripleChecker+Valid, 1766 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-07-14 01:18:29,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 3064 Invalid, 2659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [891 Valid, 1766 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2022-07-14 01:18:29,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29381 states. [2022-07-14 01:18:30,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29381 to 25506. [2022-07-14 01:18:30,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25506 states, 20548 states have (on average 1.3870449678800856) internal successors, (28501), 20785 states have internal predecessors, (28501), 3674 states have call successors, (3674), 1328 states have call predecessors, (3674), 1283 states have return successors, (3602), 3563 states have call predecessors, (3602), 3602 states have call successors, (3602) [2022-07-14 01:18:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25506 states to 25506 states and 35777 transitions. [2022-07-14 01:18:30,705 INFO L78 Accepts]: Start accepts. Automaton has 25506 states and 35777 transitions. Word has length 192 [2022-07-14 01:18:30,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:18:30,706 INFO L495 AbstractCegarLoop]: Abstraction has 25506 states and 35777 transitions. [2022-07-14 01:18:30,706 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) [2022-07-14 01:18:30,706 INFO L276 IsEmpty]: Start isEmpty. Operand 25506 states and 35777 transitions. [2022-07-14 01:18:30,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-14 01:18:30,712 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:18:30,712 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:18:30,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-14 01:18:30,713 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:18:30,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:18:30,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1119388370, now seen corresponding path program 1 times [2022-07-14 01:18:30,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:18:30,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968774943] [2022-07-14 01:18:30,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:18:30,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:18:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:31,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:18:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:31,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:31,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 01:18:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:31,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:31,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-14 01:18:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:31,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:31,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:18:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:31,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-14 01:18:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:31,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:31,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:18:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:31,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-14 01:18:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:31,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:31,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:18:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:31,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:18:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:31,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-14 01:18:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:31,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:31,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-14 01:18:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-14 01:18:31,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:18:31,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968774943] [2022-07-14 01:18:31,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968774943] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 01:18:31,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142255224] [2022-07-14 01:18:31,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:18:31,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 01:18:31,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 01:18:31,108 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 01:18:31,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-14 01:18:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:32,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 12718 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 01:18:32,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:18:32,736 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-14 01:18:32,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:18:32,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142255224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:18:32,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 01:18:32,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 10 [2022-07-14 01:18:32,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11339202] [2022-07-14 01:18:32,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:18:32,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 01:18:32,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:18:32,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 01:18:32,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-14 01:18:32,739 INFO L87 Difference]: Start difference. First operand 25506 states and 35777 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) [2022-07-14 01:18:34,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:18:34,185 INFO L93 Difference]: Finished difference Result 64586 states and 90645 transitions. [2022-07-14 01:18:34,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 01:18:34,186 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 190 [2022-07-14 01:18:34,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:18:34,293 INFO L225 Difference]: With dead ends: 64586 [2022-07-14 01:18:34,294 INFO L226 Difference]: Without dead ends: 39302 [2022-07-14 01:18:34,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-14 01:18:34,347 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 [2022-07-14 01:18:34,348 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] [2022-07-14 01:18:34,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39302 states. [2022-07-14 01:18:36,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39302 to 37898. [2022-07-14 01:18:36,140 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) [2022-07-14 01:18:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37898 states to 37898 states and 53111 transitions. [2022-07-14 01:18:36,228 INFO L78 Accepts]: Start accepts. Automaton has 37898 states and 53111 transitions. Word has length 190 [2022-07-14 01:18:36,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:18:36,229 INFO L495 AbstractCegarLoop]: Abstraction has 37898 states and 53111 transitions. [2022-07-14 01:18:36,229 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) [2022-07-14 01:18:36,229 INFO L276 IsEmpty]: Start isEmpty. Operand 37898 states and 53111 transitions. [2022-07-14 01:18:36,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-14 01:18:36,234 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:18:36,234 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, 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] [2022-07-14 01:18:36,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-14 01:18:36,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 01:18:36,455 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:18:36,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:18:36,456 INFO L85 PathProgramCache]: Analyzing trace with hash 329528432, now seen corresponding path program 1 times [2022-07-14 01:18:36,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:18:36,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277840762] [2022-07-14 01:18:36,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:18:36,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:18:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:36,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:18:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:36,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:36,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 01:18:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:36,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:36,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-14 01:18:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:36,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:36,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:18:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:36,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-14 01:18:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:36,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:36,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:18:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:36,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-14 01:18:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:36,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:36,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:18:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:36,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:18:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:36,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-14 01:18:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-14 01:18:36,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:18:36,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277840762] [2022-07-14 01:18:36,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277840762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:18:36,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:18:36,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 01:18:36,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656974829] [2022-07-14 01:18:36,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:18:36,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 01:18:36,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:18:36,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 01:18:36,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 01:18:36,804 INFO L87 Difference]: Start difference. First operand 37898 states and 53111 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) [2022-07-14 01:18:40,229 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:18:42,879 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:18:47,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:18:47,228 INFO L93 Difference]: Finished difference Result 86682 states and 123101 transitions. [2022-07-14 01:18:47,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-14 01:18:47,228 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 [2022-07-14 01:18:47,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:18:47,399 INFO L225 Difference]: With dead ends: 86682 [2022-07-14 01:18:47,399 INFO L226 Difference]: Without dead ends: 49006 [2022-07-14 01:18:47,484 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 [2022-07-14 01:18:47,485 INFO L413 NwaCegarLoop]: 1175 mSDtfsCounter, 1174 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 905 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 3033 SdHoareTripleChecker+Invalid, 2628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 905 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-07-14 01:18:47,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1232 Valid, 3033 Invalid, 2628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [905 Valid, 1721 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2022-07-14 01:18:47,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49006 states. [2022-07-14 01:18:49,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49006 to 41729. [2022-07-14 01:18:49,644 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) [2022-07-14 01:18:49,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41729 states to 41729 states and 58455 transitions. [2022-07-14 01:18:49,734 INFO L78 Accepts]: Start accepts. Automaton has 41729 states and 58455 transitions. Word has length 193 [2022-07-14 01:18:49,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:18:49,734 INFO L495 AbstractCegarLoop]: Abstraction has 41729 states and 58455 transitions. [2022-07-14 01:18:49,735 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2022-07-14 01:18:49,735 INFO L276 IsEmpty]: Start isEmpty. Operand 41729 states and 58455 transitions. [2022-07-14 01:18:49,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-14 01:18:49,740 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:18:49,740 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, 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] [2022-07-14 01:18:49,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-14 01:18:49,741 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:18:49,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:18:49,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1416899343, now seen corresponding path program 1 times [2022-07-14 01:18:49,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:18:49,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277167052] [2022-07-14 01:18:49,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:18:49,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:18:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:50,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:18:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:50,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:50,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 01:18:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:50,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:50,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-14 01:18:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:50,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:50,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:18:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:50,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-14 01:18:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:50,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:50,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:18:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:50,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-14 01:18:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:50,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:18:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:50,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:18:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:50,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:18:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:50,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-14 01:18:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:18:50,057 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-14 01:18:50,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:18:50,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277167052] [2022-07-14 01:18:50,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277167052] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:18:50,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:18:50,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 01:18:50,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875456191] [2022-07-14 01:18:50,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:18:50,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 01:18:50,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:18:50,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 01:18:50,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 01:18:50,059 INFO L87 Difference]: Start difference. First operand 41729 states and 58455 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (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) [2022-07-14 01:18:53,637 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:19:00,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:19:00,142 INFO L93 Difference]: Finished difference Result 95029 states and 134869 transitions. [2022-07-14 01:19:00,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-14 01:19:00,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (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 194 [2022-07-14 01:19:00,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:19:00,338 INFO L225 Difference]: With dead ends: 95029 [2022-07-14 01:19:00,338 INFO L226 Difference]: Without dead ends: 53522 [2022-07-14 01:19:00,421 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 [2022-07-14 01:19:00,421 INFO L413 NwaCegarLoop]: 1187 mSDtfsCounter, 953 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 2293 mSolverCounterSat, 617 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 3532 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 2293 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-07-14 01:19:00,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 3532 Invalid, 2911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 2293 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-07-14 01:19:00,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53522 states. [2022-07-14 01:19:02,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53522 to 45560. [2022-07-14 01:19:02,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45560 states, 36259 states have (on average 1.3796574643536776) internal successors, (50025), 36682 states have internal predecessors, (50025), 6926 states have call successors, (6926), 2421 states have call predecessors, (6926), 2374 states have return successors, (6848), 6807 states have call predecessors, (6848), 6848 states have call successors, (6848) [2022-07-14 01:19:02,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45560 states to 45560 states and 63799 transitions. [2022-07-14 01:19:02,732 INFO L78 Accepts]: Start accepts. Automaton has 45560 states and 63799 transitions. Word has length 194 [2022-07-14 01:19:02,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:19:02,732 INFO L495 AbstractCegarLoop]: Abstraction has 45560 states and 63799 transitions. [2022-07-14 01:19:02,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (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) [2022-07-14 01:19:02,732 INFO L276 IsEmpty]: Start isEmpty. Operand 45560 states and 63799 transitions. [2022-07-14 01:19:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-07-14 01:19:02,738 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:19:02,738 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, 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] [2022-07-14 01:19:02,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-14 01:19:02,738 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:19:02,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:19:02,739 INFO L85 PathProgramCache]: Analyzing trace with hash 957069476, now seen corresponding path program 1 times [2022-07-14 01:19:02,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:19:02,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244765132] [2022-07-14 01:19:02,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:19:02,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:19:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:19:03,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:19:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:19:03,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:19:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:19:03,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 01:19:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:19:03,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:19:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:19:03,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-14 01:19:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:19:03,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:19:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:19:03,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:19:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:19:03,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-14 01:19:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:19:03,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:19:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:19:03,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:19:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:19:03,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-14 01:19:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:19:03,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:19:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:19:03,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:19:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:19:03,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-14 01:19:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:19:03,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-14 01:19:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:19:03,108 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-14 01:19:03,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:19:03,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244765132] [2022-07-14 01:19:03,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244765132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:19:03,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:19:03,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 01:19:03,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999285636] [2022-07-14 01:19:03,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:19:03,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 01:19:03,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:19:03,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 01:19:03,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 01:19:03,109 INFO L87 Difference]: Start difference. First operand 45560 states and 63799 transitions. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 3 states have internal predecessors, (119), 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) [2022-07-14 01:19:06,944 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 []