./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.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 818c635cf736ceef0cf6e46266c8f75f5ad55dd0b6a806d4c2f32c53e0369659 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:38:41,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:38:41,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:38:41,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:38:41,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:38:41,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:38:41,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:38:41,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:38:41,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:38:41,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:38:41,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:38:41,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:38:41,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:38:41,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:38:41,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:38:41,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:38:41,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:38:41,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:38:41,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:38:41,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:38:41,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:38:41,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:38:41,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:38:41,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:38:41,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:38:41,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:38:41,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:38:41,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:38:41,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:38:41,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:38:41,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:38:41,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:38:41,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:38:41,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:38:41,930 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:38:41,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:38:41,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:38:41,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:38:41,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:38:41,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:38:41,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:38:41,932 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:38:41,957 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:38:41,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:38:41,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:38:41,961 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:38:41,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:38:41,962 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:38:41,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:38:41,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:38:41,964 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:38:41,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:38:41,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:38:41,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:38:41,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:38:41,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:38:41,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:38:41,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:38:41,965 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:38:41,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:38:41,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:38:41,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:38:41,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:38:41,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:38:41,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:38:41,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:38:41,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:38:41,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:38:41,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:38:41,967 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:38:41,968 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:38:41,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:38:41,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:38:41,968 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 818c635cf736ceef0cf6e46266c8f75f5ad55dd0b6a806d4c2f32c53e0369659 [2021-12-14 17:38:42,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:38:42,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:38:42,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:38:42,170 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:38:42,171 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:38:42,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2021-12-14 17:38:42,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56e2cbef8/41e35b6bb02644218755f922bbb6008f/FLAGfc8789445 [2021-12-14 17:38:42,821 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:38:42,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2021-12-14 17:38:42,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56e2cbef8/41e35b6bb02644218755f922bbb6008f/FLAGfc8789445 [2021-12-14 17:38:43,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56e2cbef8/41e35b6bb02644218755f922bbb6008f [2021-12-14 17:38:43,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:38:43,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:38:43,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:38:43,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:38:43,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:38:43,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:38:43" (1/1) ... [2021-12-14 17:38:43,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55f4627e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:43, skipping insertion in model container [2021-12-14 17:38:43,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:38:43" (1/1) ... [2021-12-14 17:38:43,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:38:43,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:38:44,419 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i[199878,199891] [2021-12-14 17:38:44,490 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:38:44,515 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:38:44,728 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i[199878,199891] [2021-12-14 17:38:44,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:38:44,839 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:38:44,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:44 WrapperNode [2021-12-14 17:38:44,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:38:44,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:38:44,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:38:44,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:38:44,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:44" (1/1) ... [2021-12-14 17:38:44,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:44" (1/1) ... [2021-12-14 17:38:45,056 INFO L137 Inliner]: procedures = 257, calls = 1499, calls flagged for inlining = 108, calls inlined = 98, statements flattened = 3721 [2021-12-14 17:38:45,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:38:45,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:38:45,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:38:45,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:38:45,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:44" (1/1) ... [2021-12-14 17:38:45,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:44" (1/1) ... [2021-12-14 17:38:45,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:44" (1/1) ... [2021-12-14 17:38:45,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:44" (1/1) ... [2021-12-14 17:38:45,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:44" (1/1) ... [2021-12-14 17:38:45,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:44" (1/1) ... [2021-12-14 17:38:45,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:44" (1/1) ... [2021-12-14 17:38:45,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:38:45,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:38:45,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:38:45,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:38:45,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:44" (1/1) ... [2021-12-14 17:38:45,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:38:45,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:38:45,248 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) [2021-12-14 17:38:45,255 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 [2021-12-14 17:38:45,282 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-12-14 17:38:45,282 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-12-14 17:38:45,282 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_fillrect [2021-12-14 17:38:45,282 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_fillrect [2021-12-14 17:38:45,282 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-14 17:38:45,283 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-14 17:38:45,283 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_submit_urb [2021-12-14 17:38:45,283 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_submit_urb [2021-12-14 17:38:45,283 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_urb_completion [2021-12-14 17:38:45,283 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_urb_completion [2021-12-14 17:38:45,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:38:45,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:38:45,284 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_mmap [2021-12-14 17:38:45,284 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_mmap [2021-12-14 17:38:45,284 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer_work [2021-12-14 17:38:45,284 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer_work [2021-12-14 17:38:45,284 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_vidreg_unlock [2021-12-14 17:38:45,284 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_vidreg_unlock [2021-12-14 17:38:45,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:38:45,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:38:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_check_var [2021-12-14 17:38:45,285 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_check_var [2021-12-14 17:38:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_is_valid_mode [2021-12-14 17:38:45,285 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_is_valid_mode [2021-12-14 17:38:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register_lfsr16 [2021-12-14 17:38:45,285 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register_lfsr16 [2021-12-14 17:38:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure fb_destroy_modelist [2021-12-14 17:38:45,285 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_destroy_modelist [2021-12-14 17:38:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-12-14 17:38:45,286 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-12-14 17:38:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:38:45,286 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:38:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_setcolreg [2021-12-14 17:38:45,286 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_setcolreg [2021-12-14 17:38:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:38:45,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:38:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-14 17:38:45,287 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-14 17:38:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 17:38:45,287 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 17:38:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_release [2021-12-14 17:38:45,287 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_release [2021-12-14 17:38:45,288 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_get_urb [2021-12-14 17:38:45,288 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_get_urb [2021-12-14 17:38:45,288 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_video_mode [2021-12-14 17:38:45,288 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_video_mode [2021-12-14 17:38:45,288 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-14 17:38:45,288 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-14 17:38:45,288 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 17:38:45,289 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 17:38:45,289 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_blank [2021-12-14 17:38:45,289 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_blank [2021-12-14 17:38:45,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:38:45,289 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-14 17:38:45,289 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-14 17:38:45,290 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-14 17:38:45,290 INFO L130 BoogieDeclarations]: Found specification of procedure get_cycles [2021-12-14 17:38:45,290 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cycles [2021-12-14 17:38:45,291 INFO L130 BoogieDeclarations]: Found specification of procedure up [2021-12-14 17:38:45,291 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2021-12-14 17:38:45,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:38:45,291 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_copyarea [2021-12-14 17:38:45,291 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_copyarea [2021-12-14 17:38:45,291 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 17:38:45,292 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 17:38:45,292 INFO L130 BoogieDeclarations]: Found specification of procedure fb_add_videomode [2021-12-14 17:38:45,292 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_add_videomode [2021-12-14 17:38:45,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:38:45,292 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2021-12-14 17:38:45,292 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2021-12-14 17:38:45,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:38:45,293 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-14 17:38:45,293 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-14 17:38:45,293 INFO L130 BoogieDeclarations]: Found specification of procedure fb_edid_to_monspecs [2021-12-14 17:38:45,293 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_edid_to_monspecs [2021-12-14 17:38:45,293 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-14 17:38:45,293 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-14 17:38:45,293 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:38:45,293 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:38:45,294 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-14 17:38:45,294 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-14 17:38:45,294 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_setup_modes [2021-12-14 17:38:45,294 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_setup_modes [2021-12-14 17:38:45,294 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-14 17:38:45,294 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-14 17:38:45,294 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-14 17:38:45,294 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-14 17:38:45,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:38:45,295 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-14 17:38:45,295 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-14 17:38:45,295 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_vidreg_lock [2021-12-14 17:38:45,295 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_vidreg_lock [2021-12-14 17:38:45,295 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-14 17:38:45,296 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-14 17:38:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:38:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-12-14 17:38:45,296 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-12-14 17:38:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:38:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_ioctl [2021-12-14 17:38:45,297 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_ioctl [2021-12-14 17:38:45,297 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer [2021-12-14 17:38:45,297 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer [2021-12-14 17:38:45,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:38:45,297 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:38:45,298 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_var_color_format [2021-12-14 17:38:45,298 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_var_color_format [2021-12-14 17:38:45,298 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-14 17:38:45,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-14 17:38:45,298 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:38:45,298 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:38:45,298 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-12-14 17:38:45,298 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-12-14 17:38:45,299 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-14 17:38:45,299 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-14 17:38:45,299 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_handle_damage [2021-12-14 17:38:45,299 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_handle_damage [2021-12-14 17:38:45,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:38:45,299 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_render_hline [2021-12-14 17:38:45,300 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_render_hline [2021-12-14 17:38:45,301 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_usb_disconnect [2021-12-14 17:38:45,302 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_usb_disconnect [2021-12-14 17:38:45,302 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-14 17:38:45,302 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-14 17:38:45,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:38:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:38:45,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:38:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_blanking [2021-12-14 17:38:45,304 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_blanking [2021-12-14 17:38:45,308 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register_16 [2021-12-14 17:38:45,308 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register_16 [2021-12-14 17:38:45,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:38:45,308 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_imageblit [2021-12-14 17:38:45,308 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_imageblit [2021-12-14 17:38:45,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:38:45,308 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:38:45,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:38:45,309 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_open [2021-12-14 17:38:45,309 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_open [2021-12-14 17:38:45,309 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register [2021-12-14 17:38:45,309 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register [2021-12-14 17:38:45,309 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-14 17:38:45,309 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-14 17:38:45,309 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-14 17:38:45,309 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-14 17:38:45,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_fb_info [2021-12-14 17:38:45,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_fb_info [2021-12-14 17:38:45,310 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-12-14 17:38:45,310 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-12-14 17:38:45,310 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_init_framebuffer_work [2021-12-14 17:38:45,310 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_init_framebuffer_work [2021-12-14 17:38:45,310 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-14 17:38:45,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-14 17:38:45,310 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-14 17:38:45,310 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-14 17:38:45,310 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_set_par [2021-12-14 17:38:45,310 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_set_par [2021-12-14 17:38:45,311 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-12-14 17:38:45,311 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-12-14 17:38:45,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:38:45,311 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-12-14 17:38:45,311 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-12-14 17:38:45,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:38:45,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:38:45,877 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:38:45,879 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:38:55,320 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:38:55,334 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:38:55,334 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:38:55,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:38:55 BoogieIcfgContainer [2021-12-14 17:38:55,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:38:55,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:38:55,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:38:55,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:38:55,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:38:43" (1/3) ... [2021-12-14 17:38:55,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f6fb55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:38:55, skipping insertion in model container [2021-12-14 17:38:55,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:44" (2/3) ... [2021-12-14 17:38:55,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f6fb55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:38:55, skipping insertion in model container [2021-12-14 17:38:55,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:38:55" (3/3) ... [2021-12-14 17:38:55,343 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2021-12-14 17:38:55,348 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:38:55,348 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:38:55,390 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:38:55,394 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:38:55,395 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:38:55,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 1126 states, 812 states have (on average 1.3214285714285714) internal successors, (1073), 834 states have internal predecessors, (1073), 239 states have call successors, (239), 73 states have call predecessors, (239), 73 states have return successors, (239), 235 states have call predecessors, (239), 239 states have call successors, (239) [2021-12-14 17:38:55,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-14 17:38:55,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:55,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:38:55,433 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:55,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:55,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1863154009, now seen corresponding path program 1 times [2021-12-14 17:38:55,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:55,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77658631] [2021-12-14 17:38:55,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:55,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:55,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:38:55,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:55,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77658631] [2021-12-14 17:38:55,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77658631] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:55,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:38:55,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:38:55,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555488690] [2021-12-14 17:38:55,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:55,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:38:55,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:55,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:38:55,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:55,822 INFO L87 Difference]: Start difference. First operand has 1126 states, 812 states have (on average 1.3214285714285714) internal successors, (1073), 834 states have internal predecessors, (1073), 239 states have call successors, (239), 73 states have call predecessors, (239), 73 states have return successors, (239), 235 states have call predecessors, (239), 239 states have call successors, (239) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:56,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:56,023 INFO L93 Difference]: Finished difference Result 3346 states and 4691 transitions. [2021-12-14 17:38:56,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:38:56,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-14 17:38:56,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:56,049 INFO L225 Difference]: With dead ends: 3346 [2021-12-14 17:38:56,049 INFO L226 Difference]: Without dead ends: 2213 [2021-12-14 17:38:56,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:56,062 INFO L933 BasicCegarLoop]: 1772 mSDtfsCounter, 1505 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 3297 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:56,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 3297 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:38:56,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2021-12-14 17:38:56,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 2209. [2021-12-14 17:38:56,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 1593 states have (on average 1.3138731952291274) internal successors, (2093), 1627 states have internal predecessors, (2093), 471 states have call successors, (471), 145 states have call predecessors, (471), 144 states have return successors, (464), 456 states have call predecessors, (464), 464 states have call successors, (464) [2021-12-14 17:38:56,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3028 transitions. [2021-12-14 17:38:56,224 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3028 transitions. Word has length 16 [2021-12-14 17:38:56,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:56,225 INFO L470 AbstractCegarLoop]: Abstraction has 2209 states and 3028 transitions. [2021-12-14 17:38:56,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:56,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3028 transitions. [2021-12-14 17:38:56,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-14 17:38:56,232 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:56,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:38:56,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:38:56,233 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:56,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:56,235 INFO L85 PathProgramCache]: Analyzing trace with hash 805705890, now seen corresponding path program 1 times [2021-12-14 17:38:56,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:56,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878482333] [2021-12-14 17:38:56,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:56,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:56,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:38:56,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:56,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878482333] [2021-12-14 17:38:56,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878482333] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:56,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:38:56,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:38:56,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808885424] [2021-12-14 17:38:56,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:56,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:38:56,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:56,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:38:56,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:56,354 INFO L87 Difference]: Start difference. First operand 2209 states and 3028 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:56,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:56,452 INFO L93 Difference]: Finished difference Result 2235 states and 3060 transitions. [2021-12-14 17:38:56,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:38:56,454 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-14 17:38:56,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:56,468 INFO L225 Difference]: With dead ends: 2235 [2021-12-14 17:38:56,468 INFO L226 Difference]: Without dead ends: 2222 [2021-12-14 17:38:56,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:56,475 INFO L933 BasicCegarLoop]: 1545 mSDtfsCounter, 1525 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:56,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1561 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:38:56,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2021-12-14 17:38:56,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2209. [2021-12-14 17:38:56,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 1593 states have (on average 1.3132454488386691) internal successors, (2092), 1627 states have internal predecessors, (2092), 471 states have call successors, (471), 145 states have call predecessors, (471), 144 states have return successors, (464), 456 states have call predecessors, (464), 464 states have call successors, (464) [2021-12-14 17:38:56,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3027 transitions. [2021-12-14 17:38:56,579 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3027 transitions. Word has length 19 [2021-12-14 17:38:56,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:56,580 INFO L470 AbstractCegarLoop]: Abstraction has 2209 states and 3027 transitions. [2021-12-14 17:38:56,580 INFO L471 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:56,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3027 transitions. [2021-12-14 17:38:56,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-14 17:38:56,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:56,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:38:56,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:38:56,583 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:56,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:56,583 INFO L85 PathProgramCache]: Analyzing trace with hash 862964192, now seen corresponding path program 1 times [2021-12-14 17:38:56,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:56,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262579227] [2021-12-14 17:38:56,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:56,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:56,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:38:56,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:56,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262579227] [2021-12-14 17:38:56,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262579227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:56,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:38:56,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:38:56,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304385339] [2021-12-14 17:38:56,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:56,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:38:56,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:56,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:38:56,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:56,671 INFO L87 Difference]: Start difference. First operand 2209 states and 3027 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:56,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:56,773 INFO L93 Difference]: Finished difference Result 2211 states and 3028 transitions. [2021-12-14 17:38:56,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:38:56,774 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-14 17:38:56,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:56,783 INFO L225 Difference]: With dead ends: 2211 [2021-12-14 17:38:56,783 INFO L226 Difference]: Without dead ends: 2208 [2021-12-14 17:38:56,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:56,792 INFO L933 BasicCegarLoop]: 1527 mSDtfsCounter, 1512 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:56,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1512 Valid, 1527 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:38:56,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2021-12-14 17:38:56,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 2208. [2021-12-14 17:38:56,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2208 states, 1593 states have (on average 1.3126177024482109) internal successors, (2091), 1626 states have internal predecessors, (2091), 470 states have call successors, (470), 145 states have call predecessors, (470), 144 states have return successors, (464), 456 states have call predecessors, (464), 464 states have call successors, (464) [2021-12-14 17:38:56,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 3025 transitions. [2021-12-14 17:38:56,865 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 3025 transitions. Word has length 19 [2021-12-14 17:38:56,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:56,866 INFO L470 AbstractCegarLoop]: Abstraction has 2208 states and 3025 transitions. [2021-12-14 17:38:56,866 INFO L471 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:56,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 3025 transitions. [2021-12-14 17:38:56,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-14 17:38:56,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:56,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:38:56,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:38:56,867 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:56,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:56,868 INFO L85 PathProgramCache]: Analyzing trace with hash 981610294, now seen corresponding path program 1 times [2021-12-14 17:38:56,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:56,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60453392] [2021-12-14 17:38:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:56,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:56,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:38:56,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:56,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60453392] [2021-12-14 17:38:56,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60453392] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:56,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:38:56,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:38:56,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884028361] [2021-12-14 17:38:56,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:56,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:38:56,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:56,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:38:56,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:56,957 INFO L87 Difference]: Start difference. First operand 2208 states and 3025 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:57,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:57,028 INFO L93 Difference]: Finished difference Result 2210 states and 3026 transitions. [2021-12-14 17:38:57,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:38:57,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-14 17:38:57,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:57,038 INFO L225 Difference]: With dead ends: 2210 [2021-12-14 17:38:57,038 INFO L226 Difference]: Without dead ends: 2207 [2021-12-14 17:38:57,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:57,045 INFO L933 BasicCegarLoop]: 1525 mSDtfsCounter, 1509 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:57,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1509 Valid, 1525 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:38:57,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-12-14 17:38:57,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2207. [2021-12-14 17:38:57,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 1593 states have (on average 1.3119899560577526) internal successors, (2090), 1625 states have internal predecessors, (2090), 469 states have call successors, (469), 145 states have call predecessors, (469), 144 states have return successors, (464), 456 states have call predecessors, (464), 464 states have call successors, (464) [2021-12-14 17:38:57,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 3023 transitions. [2021-12-14 17:38:57,144 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 3023 transitions. Word has length 20 [2021-12-14 17:38:57,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:57,144 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 3023 transitions. [2021-12-14 17:38:57,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:57,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 3023 transitions. [2021-12-14 17:38:57,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-14 17:38:57,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:57,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:38:57,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:38:57,146 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:57,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:57,146 INFO L85 PathProgramCache]: Analyzing trace with hash 364677027, now seen corresponding path program 1 times [2021-12-14 17:38:57,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:57,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400450192] [2021-12-14 17:38:57,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:57,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:57,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:38:57,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:57,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400450192] [2021-12-14 17:38:57,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400450192] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:57,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:38:57,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:38:57,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338619171] [2021-12-14 17:38:57,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:57,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:38:57,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:57,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:38:57,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:57,205 INFO L87 Difference]: Start difference. First operand 2207 states and 3023 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:57,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:57,357 INFO L93 Difference]: Finished difference Result 6579 states and 9160 transitions. [2021-12-14 17:38:57,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:38:57,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-14 17:38:57,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:57,379 INFO L225 Difference]: With dead ends: 6579 [2021-12-14 17:38:57,379 INFO L226 Difference]: Without dead ends: 4375 [2021-12-14 17:38:57,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:57,389 INFO L933 BasicCegarLoop]: 2074 mSDtfsCounter, 1512 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 3594 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:57,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1512 Valid, 3594 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:38:57,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4375 states. [2021-12-14 17:38:57,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4375 to 4369. [2021-12-14 17:38:57,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4369 states, 3158 states have (on average 1.3128562381253959) internal successors, (4146), 3218 states have internal predecessors, (4146), 928 states have call successors, (928), 284 states have call predecessors, (928), 282 states have return successors, (990), 906 states have call predecessors, (990), 922 states have call successors, (990) [2021-12-14 17:38:57,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4369 states to 4369 states and 6064 transitions. [2021-12-14 17:38:57,551 INFO L78 Accepts]: Start accepts. Automaton has 4369 states and 6064 transitions. Word has length 21 [2021-12-14 17:38:57,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:57,551 INFO L470 AbstractCegarLoop]: Abstraction has 4369 states and 6064 transitions. [2021-12-14 17:38:57,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:57,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4369 states and 6064 transitions. [2021-12-14 17:38:57,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-14 17:38:57,552 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:57,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:38:57,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:38:57,553 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:57,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:57,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1580380199, now seen corresponding path program 1 times [2021-12-14 17:38:57,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:57,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565743198] [2021-12-14 17:38:57,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:57,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:38:57,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:57,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565743198] [2021-12-14 17:38:57,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565743198] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:57,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:38:57,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:38:57,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103781795] [2021-12-14 17:38:57,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:57,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:38:57,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:57,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:38:57,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:57,624 INFO L87 Difference]: Start difference. First operand 4369 states and 6064 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:57,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:57,781 INFO L93 Difference]: Finished difference Result 4371 states and 6065 transitions. [2021-12-14 17:38:57,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:38:57,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-14 17:38:57,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:57,802 INFO L225 Difference]: With dead ends: 4371 [2021-12-14 17:38:57,802 INFO L226 Difference]: Without dead ends: 4368 [2021-12-14 17:38:57,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:57,807 INFO L933 BasicCegarLoop]: 1523 mSDtfsCounter, 1505 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:57,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 1523 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:38:57,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4368 states. [2021-12-14 17:38:57,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4368 to 4368. [2021-12-14 17:38:57,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 3158 states have (on average 1.312539582013933) internal successors, (4145), 3217 states have internal predecessors, (4145), 927 states have call successors, (927), 284 states have call predecessors, (927), 282 states have return successors, (990), 906 states have call predecessors, (990), 922 states have call successors, (990) [2021-12-14 17:38:57,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 6062 transitions. [2021-12-14 17:38:57,949 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 6062 transitions. Word has length 22 [2021-12-14 17:38:57,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:57,950 INFO L470 AbstractCegarLoop]: Abstraction has 4368 states and 6062 transitions. [2021-12-14 17:38:57,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:57,950 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 6062 transitions. [2021-12-14 17:38:57,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-14 17:38:57,951 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:57,951 INFO L514 BasicCegarLoop]: 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] [2021-12-14 17:38:57,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 17:38:57,952 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:57,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:57,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1747607194, now seen corresponding path program 1 times [2021-12-14 17:38:57,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:57,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512433471] [2021-12-14 17:38:57,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:57,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:38:58,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:58,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512433471] [2021-12-14 17:38:58,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512433471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:58,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:38:58,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:38:58,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039681145] [2021-12-14 17:38:58,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:58,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:38:58,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:58,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:38:58,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:58,058 INFO L87 Difference]: Start difference. First operand 4368 states and 6062 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:58,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:38:58,169 INFO L93 Difference]: Finished difference Result 4370 states and 6063 transitions. [2021-12-14 17:38:58,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:38:58,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-14 17:38:58,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:38:58,189 INFO L225 Difference]: With dead ends: 4370 [2021-12-14 17:38:58,189 INFO L226 Difference]: Without dead ends: 4358 [2021-12-14 17:38:58,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:38:58,193 INFO L933 BasicCegarLoop]: 1522 mSDtfsCounter, 1502 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:38:58,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1502 Valid, 1522 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:38:58,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4358 states. [2021-12-14 17:38:58,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4358 to 4358. [2021-12-14 17:38:58,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4358 states, 3149 states have (on average 1.3124801524293426) internal successors, (4133), 3207 states have internal predecessors, (4133), 926 states have call successors, (926), 284 states have call predecessors, (926), 282 states have return successors, (990), 906 states have call predecessors, (990), 922 states have call successors, (990) [2021-12-14 17:38:58,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4358 states to 4358 states and 6049 transitions. [2021-12-14 17:38:58,380 INFO L78 Accepts]: Start accepts. Automaton has 4358 states and 6049 transitions. Word has length 23 [2021-12-14 17:38:58,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:38:58,381 INFO L470 AbstractCegarLoop]: Abstraction has 4358 states and 6049 transitions. [2021-12-14 17:38:58,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 17:38:58,382 INFO L276 IsEmpty]: Start isEmpty. Operand 4358 states and 6049 transitions. [2021-12-14 17:38:58,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-14 17:38:58,386 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:38:58,387 INFO L514 BasicCegarLoop]: 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] [2021-12-14 17:38:58,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 17:38:58,387 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:38:58,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:38:58,388 INFO L85 PathProgramCache]: Analyzing trace with hash 771988741, now seen corresponding path program 1 times [2021-12-14 17:38:58,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:38:58,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904687432] [2021-12-14 17:38:58,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:38:58,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:38:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:58,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:38:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:58,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:58,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:38:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:58,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:38:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:38:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 17:38:58,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:38:58,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904687432] [2021-12-14 17:38:58,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904687432] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:38:58,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:38:58,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:38:58,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247491599] [2021-12-14 17:38:58,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:38:58,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:38:58,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:38:58,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:38:58,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:38:58,474 INFO L87 Difference]: Start difference. First operand 4358 states and 6049 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:39:01,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:39:02,714 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:39:04,731 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:39:08,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:39:10,459 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 [] [2021-12-14 17:39:11,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:39:11,628 INFO L93 Difference]: Finished difference Result 13550 states and 18895 transitions. [2021-12-14 17:39:11,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:39:11,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2021-12-14 17:39:11,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:39:11,685 INFO L225 Difference]: With dead ends: 13550 [2021-12-14 17:39:11,685 INFO L226 Difference]: Without dead ends: 9195 [2021-12-14 17:39:11,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:39:11,704 INFO L933 BasicCegarLoop]: 1867 mSDtfsCounter, 1921 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 733 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2109 SdHoareTripleChecker+Valid, 3952 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 733 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:39:11,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2109 Valid, 3952 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [733 Valid, 869 Invalid, 4 Unknown, 0 Unchecked, 12.8s Time] [2021-12-14 17:39:11,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9195 states. [2021-12-14 17:39:11,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9195 to 8964. [2021-12-14 17:39:12,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8964 states, 6459 states have (on average 1.29973680136244) internal successors, (8395), 6597 states have internal predecessors, (8395), 1868 states have call successors, (1868), 566 states have call predecessors, (1868), 636 states have return successors, (2228), 1888 states have call predecessors, (2228), 1864 states have call successors, (2228) [2021-12-14 17:39:12,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 12491 transitions. [2021-12-14 17:39:12,064 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 12491 transitions. Word has length 49 [2021-12-14 17:39:12,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:39:12,067 INFO L470 AbstractCegarLoop]: Abstraction has 8964 states and 12491 transitions. [2021-12-14 17:39:12,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:39:12,067 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 12491 transitions. [2021-12-14 17:39:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-14 17:39:12,073 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:39:12,073 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 17:39:12,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 17:39:12,074 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:39:12,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:39:12,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2059784186, now seen corresponding path program 1 times [2021-12-14 17:39:12,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:39:12,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909061838] [2021-12-14 17:39:12,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:39:12,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:39:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:12,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 17:39:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:12,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:12,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:39:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:12,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:12,201 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 17:39:12,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:39:12,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909061838] [2021-12-14 17:39:12,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909061838] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:39:12,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:39:12,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:39:12,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927626642] [2021-12-14 17:39:12,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:39:12,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:39:12,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:39:12,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:39:12,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:39:12,204 INFO L87 Difference]: Start difference. First operand 8964 states and 12491 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:39:14,357 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 [] [2021-12-14 17:39:18,183 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:39:20,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:39:21,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:39:21,542 INFO L93 Difference]: Finished difference Result 22702 states and 31695 transitions. [2021-12-14 17:39:21,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:39:21,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 61 [2021-12-14 17:39:21,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:39:21,591 INFO L225 Difference]: With dead ends: 22702 [2021-12-14 17:39:21,592 INFO L226 Difference]: Without dead ends: 13741 [2021-12-14 17:39:21,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:39:21,622 INFO L933 BasicCegarLoop]: 2804 mSDtfsCounter, 1638 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 559 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1824 SdHoareTripleChecker+Valid, 5381 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:39:21,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1824 Valid, 5381 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [559 Valid, 922 Invalid, 3 Unknown, 0 Unchecked, 8.9s Time] [2021-12-14 17:39:21,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13741 states. [2021-12-14 17:39:22,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13741 to 13398. [2021-12-14 17:39:22,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13398 states, 9657 states have (on average 1.2990576783680232) internal successors, (12545), 9863 states have internal predecessors, (12545), 2790 states have call successors, (2790), 844 states have call predecessors, (2790), 950 states have return successors, (3326), 2822 states have call predecessors, (3326), 2786 states have call successors, (3326) [2021-12-14 17:39:22,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13398 states to 13398 states and 18661 transitions. [2021-12-14 17:39:22,110 INFO L78 Accepts]: Start accepts. Automaton has 13398 states and 18661 transitions. Word has length 61 [2021-12-14 17:39:22,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:39:22,110 INFO L470 AbstractCegarLoop]: Abstraction has 13398 states and 18661 transitions. [2021-12-14 17:39:22,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:39:22,111 INFO L276 IsEmpty]: Start isEmpty. Operand 13398 states and 18661 transitions. [2021-12-14 17:39:22,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-14 17:39:22,174 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:39:22,175 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:39:22,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 17:39:22,175 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:39:22,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:39:22,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1712225285, now seen corresponding path program 1 times [2021-12-14 17:39:22,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:39:22,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134599443] [2021-12-14 17:39:22,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:39:22,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:39:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:22,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-14 17:39:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:22,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:22,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:39:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:22,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:22,319 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-14 17:39:22,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:39:22,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134599443] [2021-12-14 17:39:22,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134599443] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:39:22,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:39:22,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:39:22,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783159106] [2021-12-14 17:39:22,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:39:22,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:39:22,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:39:22,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:39:22,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:39:22,321 INFO L87 Difference]: Start difference. First operand 13398 states and 18661 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-14 17:39:24,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:39:28,205 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:39:29,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:39:29,336 INFO L93 Difference]: Finished difference Result 27244 states and 38474 transitions. [2021-12-14 17:39:29,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:39:29,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 73 [2021-12-14 17:39:29,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:39:29,386 INFO L225 Difference]: With dead ends: 27244 [2021-12-14 17:39:29,386 INFO L226 Difference]: Without dead ends: 13849 [2021-12-14 17:39:29,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:39:29,433 INFO L933 BasicCegarLoop]: 1431 mSDtfsCounter, 387 mSDsluCounter, 3109 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 261 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 4540 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:39:29,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 4540 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 965 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2021-12-14 17:39:29,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13849 states. [2021-12-14 17:39:29,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13849 to 13434. [2021-12-14 17:39:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13434 states, 9693 states have (on average 1.2979469720416796) internal successors, (12581), 9899 states have internal predecessors, (12581), 2790 states have call successors, (2790), 844 states have call predecessors, (2790), 950 states have return successors, (3326), 2822 states have call predecessors, (3326), 2786 states have call successors, (3326) [2021-12-14 17:39:29,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13434 states to 13434 states and 18697 transitions. [2021-12-14 17:39:29,942 INFO L78 Accepts]: Start accepts. Automaton has 13434 states and 18697 transitions. Word has length 73 [2021-12-14 17:39:29,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:39:29,944 INFO L470 AbstractCegarLoop]: Abstraction has 13434 states and 18697 transitions. [2021-12-14 17:39:29,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-14 17:39:29,945 INFO L276 IsEmpty]: Start isEmpty. Operand 13434 states and 18697 transitions. [2021-12-14 17:39:29,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-14 17:39:29,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:39:29,961 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:39:29,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 17:39:29,962 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:39:29,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:39:29,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1032166915, now seen corresponding path program 1 times [2021-12-14 17:39:29,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:39:29,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452141272] [2021-12-14 17:39:29,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:39:29,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:39:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:30,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-14 17:39:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:30,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:30,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:39:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:30,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:30,171 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-14 17:39:30,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:39:30,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452141272] [2021-12-14 17:39:30,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452141272] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:39:30,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:39:30,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:39:30,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397257471] [2021-12-14 17:39:30,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:39:30,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:39:30,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:39:30,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:39:30,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:39:30,174 INFO L87 Difference]: Start difference. First operand 13434 states and 18697 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-14 17:39:32,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:39:36,372 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:39:38,522 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 [] [2021-12-14 17:39:39,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:39:39,018 INFO L93 Difference]: Finished difference Result 30005 states and 42659 transitions. [2021-12-14 17:39:39,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:39:39,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 73 [2021-12-14 17:39:39,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:39:39,084 INFO L225 Difference]: With dead ends: 30005 [2021-12-14 17:39:39,084 INFO L226 Difference]: Without dead ends: 16574 [2021-12-14 17:39:39,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:39:39,117 INFO L933 BasicCegarLoop]: 1769 mSDtfsCounter, 1989 mSDsluCounter, 2237 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 641 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2099 SdHoareTripleChecker+Valid, 4006 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:39:39,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2099 Valid, 4006 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [641 Valid, 768 Invalid, 3 Unknown, 0 Unchecked, 8.3s Time] [2021-12-14 17:39:39,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16574 states. [2021-12-14 17:39:39,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16574 to 13406. [2021-12-14 17:39:39,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13406 states, 9673 states have (on average 1.2969089217409284) internal successors, (12545), 9879 states have internal predecessors, (12545), 2782 states have call successors, (2782), 844 states have call predecessors, (2782), 950 states have return successors, (3314), 2814 states have call predecessors, (3314), 2778 states have call successors, (3314) [2021-12-14 17:39:39,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13406 states to 13406 states and 18641 transitions. [2021-12-14 17:39:39,739 INFO L78 Accepts]: Start accepts. Automaton has 13406 states and 18641 transitions. Word has length 73 [2021-12-14 17:39:39,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:39:39,740 INFO L470 AbstractCegarLoop]: Abstraction has 13406 states and 18641 transitions. [2021-12-14 17:39:39,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-14 17:39:39,740 INFO L276 IsEmpty]: Start isEmpty. Operand 13406 states and 18641 transitions. [2021-12-14 17:39:39,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-14 17:39:39,762 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:39:39,762 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 17:39:39,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 17:39:39,763 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:39:39,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:39:39,763 INFO L85 PathProgramCache]: Analyzing trace with hash 734894962, now seen corresponding path program 1 times [2021-12-14 17:39:39,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:39:39,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108255812] [2021-12-14 17:39:39,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:39:39,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:39:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:39,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:39:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:39,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:39:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:39,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:39:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:39,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:39:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:39,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:39:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:39,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:39:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:39,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 17:39:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:39,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 17:39:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:39,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 17:39:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:39,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:39:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:39,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-14 17:39:39,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:39:39,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108255812] [2021-12-14 17:39:39,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108255812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:39:39,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:39:39,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:39:39,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273278628] [2021-12-14 17:39:39,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:39:39,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:39:39,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:39:39,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:39:39,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:39:39,936 INFO L87 Difference]: Start difference. First operand 13406 states and 18641 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-14 17:39:42,336 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 [] [2021-12-14 17:39:47,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []