./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.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 8bd4d18c7774801c1dd2fcc01cd37afd9da2c99096cf08f4bd160d17156b286b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 04:08:16,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 04:08:16,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 04:08:16,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 04:08:16,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 04:08:16,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 04:08:16,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 04:08:16,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 04:08:16,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 04:08:16,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 04:08:16,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 04:08:16,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 04:08:16,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 04:08:16,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 04:08:16,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 04:08:16,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 04:08:16,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 04:08:16,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 04:08:16,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 04:08:16,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 04:08:16,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 04:08:16,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 04:08:16,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 04:08:16,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 04:08:16,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 04:08:16,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 04:08:16,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 04:08:16,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 04:08:16,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 04:08:16,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 04:08:16,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 04:08:16,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 04:08:16,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 04:08:16,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 04:08:16,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 04:08:16,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 04:08:16,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 04:08:16,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 04:08:16,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 04:08:16,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 04:08:16,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 04:08:16,758 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 04:08:16,793 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 04:08:16,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 04:08:16,795 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 04:08:16,795 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 04:08:16,796 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 04:08:16,796 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 04:08:16,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 04:08:16,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 04:08:16,798 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 04:08:16,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 04:08:16,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 04:08:16,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 04:08:16,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 04:08:16,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 04:08:16,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 04:08:16,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 04:08:16,800 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 04:08:16,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 04:08:16,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 04:08:16,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 04:08:16,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 04:08:16,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:08:16,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 04:08:16,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 04:08:16,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 04:08:16,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 04:08:16,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 04:08:16,803 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 04:08:16,803 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 04:08:16,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 04:08:16,803 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bd4d18c7774801c1dd2fcc01cd37afd9da2c99096cf08f4bd160d17156b286b [2021-12-28 04:08:17,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 04:08:17,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 04:08:17,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 04:08:17,146 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 04:08:17,146 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 04:08:17,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-28 04:08:17,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cfbdbae2/845992cced33471f81096a8d6f7c49d8/FLAGf802cca6e [2021-12-28 04:08:17,831 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 04:08:17,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-28 04:08:17,861 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cfbdbae2/845992cced33471f81096a8d6f7c49d8/FLAGf802cca6e [2021-12-28 04:08:18,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cfbdbae2/845992cced33471f81096a8d6f7c49d8 [2021-12-28 04:08:18,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 04:08:18,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 04:08:18,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 04:08:18,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 04:08:18,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 04:08:18,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:08:18" (1/1) ... [2021-12-28 04:08:18,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4123d1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:08:18, skipping insertion in model container [2021-12-28 04:08:18,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:08:18" (1/1) ... [2021-12-28 04:08:18,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 04:08:18,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 04:08:18,848 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-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113815,113828] [2021-12-28 04:08:18,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:08:18,916 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 04:08:19,075 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-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113815,113828] [2021-12-28 04:08:19,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:08:19,118 INFO L208 MainTranslator]: Completed translation [2021-12-28 04:08:19,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:08:19 WrapperNode [2021-12-28 04:08:19,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 04:08:19,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 04:08:19,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 04:08:19,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 04:08:19,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:08:19" (1/1) ... [2021-12-28 04:08:19,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:08:19" (1/1) ... [2021-12-28 04:08:19,230 INFO L137 Inliner]: procedures = 109, calls = 310, calls flagged for inlining = 49, calls inlined = 43, statements flattened = 770 [2021-12-28 04:08:19,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 04:08:19,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 04:08:19,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 04:08:19,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 04:08:19,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:08:19" (1/1) ... [2021-12-28 04:08:19,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:08:19" (1/1) ... [2021-12-28 04:08:19,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:08:19" (1/1) ... [2021-12-28 04:08:19,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:08:19" (1/1) ... [2021-12-28 04:08:19,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:08:19" (1/1) ... [2021-12-28 04:08:19,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:08:19" (1/1) ... [2021-12-28 04:08:19,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:08:19" (1/1) ... [2021-12-28 04:08:19,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 04:08:19,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 04:08:19,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 04:08:19,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 04:08:19,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:08:19" (1/1) ... [2021-12-28 04:08:19,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:08:19,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:08:19,324 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) [2021-12-28 04:08:19,354 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 [2021-12-28 04:08:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 04:08:19,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 04:08:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 04:08:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-28 04:08:19,373 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-28 04:08:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 04:08:19,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 04:08:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 04:08:19,374 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 04:08:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2021-12-28 04:08:19,374 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2021-12-28 04:08:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 04:08:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 04:08:19,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 04:08:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 04:08:19,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 04:08:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_disconnect [2021-12-28 04:08:19,375 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_disconnect [2021-12-28 04:08:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-28 04:08:19,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-28 04:08:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 04:08:19,376 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 04:08:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 04:08:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 04:08:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-28 04:08:19,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-28 04:08:19,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 04:08:19,377 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2021-12-28 04:08:19,377 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2021-12-28 04:08:19,377 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-12-28 04:08:19,377 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-12-28 04:08:19,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_7 [2021-12-28 04:08:19,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_7 [2021-12-28 04:08:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 04:08:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 04:08:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 04:08:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-28 04:08:19,378 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-28 04:08:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-28 04:08:19,379 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-28 04:08:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 04:08:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 04:08:19,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 04:08:19,714 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 04:08:19,716 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 04:08:19,818 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 04:08:20,289 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 04:08:20,296 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 04:08:20,297 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 04:08:20,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:08:20 BoogieIcfgContainer [2021-12-28 04:08:20,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 04:08:20,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 04:08:20,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 04:08:20,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 04:08:20,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 04:08:18" (1/3) ... [2021-12-28 04:08:20,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54bcf695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:08:20, skipping insertion in model container [2021-12-28 04:08:20,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:08:19" (2/3) ... [2021-12-28 04:08:20,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54bcf695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:08:20, skipping insertion in model container [2021-12-28 04:08:20,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:08:20" (3/3) ... [2021-12-28 04:08:20,306 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-28 04:08:20,310 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 04:08:20,310 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 04:08:20,341 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 04:08:20,346 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 [2021-12-28 04:08:20,347 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 04:08:20,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 233 states, 173 states have (on average 1.3121387283236994) internal successors, (227), 184 states have internal predecessors, (227), 43 states have call successors, (43), 16 states have call predecessors, (43), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-28 04:08:20,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-28 04:08:20,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:08:20,378 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:08:20,378 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:08:20,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:08:20,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1664570800, now seen corresponding path program 1 times [2021-12-28 04:08:20,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:08:20,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929806725] [2021-12-28 04:08:20,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:20,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:08:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:20,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:20,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:20,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:20,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 04:08:20,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:08:20,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929806725] [2021-12-28 04:08:20,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929806725] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:08:20,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:08:20,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 04:08:20,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097728898] [2021-12-28 04:08:20,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:08:20,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 04:08:20,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:08:20,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 04:08:20,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 04:08:20,786 INFO L87 Difference]: Start difference. First operand has 233 states, 173 states have (on average 1.3121387283236994) internal successors, (227), 184 states have internal predecessors, (227), 43 states have call successors, (43), 16 states have call predecessors, (43), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-28 04:08:21,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:08:21,133 INFO L93 Difference]: Finished difference Result 468 states and 636 transitions. [2021-12-28 04:08:21,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 04:08:21,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2021-12-28 04:08:21,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:08:21,144 INFO L225 Difference]: With dead ends: 468 [2021-12-28 04:08:21,145 INFO L226 Difference]: Without dead ends: 229 [2021-12-28 04:08:21,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 04:08:21,151 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 90 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 04:08:21,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 457 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 04:08:21,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-28 04:08:21,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 222. [2021-12-28 04:08:21,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 168 states have (on average 1.2797619047619047) internal successors, (215), 173 states have internal predecessors, (215), 39 states have call successors, (39), 15 states have call predecessors, (39), 14 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-12-28 04:08:21,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 289 transitions. [2021-12-28 04:08:21,202 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 289 transitions. Word has length 32 [2021-12-28 04:08:21,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:08:21,203 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 289 transitions. [2021-12-28 04:08:21,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-28 04:08:21,203 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 289 transitions. [2021-12-28 04:08:21,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-28 04:08:21,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:08:21,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:08:21,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 04:08:21,205 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:08:21,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:08:21,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1241868974, now seen corresponding path program 1 times [2021-12-28 04:08:21,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:08:21,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505466737] [2021-12-28 04:08:21,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:21,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:08:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:21,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:21,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:21,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:21,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 04:08:21,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:08:21,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505466737] [2021-12-28 04:08:21,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505466737] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:08:21,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:08:21,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 04:08:21,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272914493] [2021-12-28 04:08:21,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:08:21,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:08:21,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:08:21,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:08:21,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:08:21,339 INFO L87 Difference]: Start difference. First operand 222 states and 289 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-28 04:08:21,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:08:21,931 INFO L93 Difference]: Finished difference Result 646 states and 850 transitions. [2021-12-28 04:08:21,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:08:21,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2021-12-28 04:08:21,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:08:21,939 INFO L225 Difference]: With dead ends: 646 [2021-12-28 04:08:21,940 INFO L226 Difference]: Without dead ends: 429 [2021-12-28 04:08:21,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:08:21,945 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 312 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 04:08:21,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 814 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 04:08:21,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-12-28 04:08:21,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 415. [2021-12-28 04:08:21,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 314 states have (on average 1.2738853503184713) internal successors, (400), 321 states have internal predecessors, (400), 72 states have call successors, (72), 29 states have call predecessors, (72), 28 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-12-28 04:08:22,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 540 transitions. [2021-12-28 04:08:22,001 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 540 transitions. Word has length 32 [2021-12-28 04:08:22,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:08:22,002 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 540 transitions. [2021-12-28 04:08:22,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-28 04:08:22,002 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 540 transitions. [2021-12-28 04:08:22,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-28 04:08:22,009 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:08:22,010 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:08:22,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 04:08:22,010 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:08:22,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:08:22,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1658921169, now seen corresponding path program 1 times [2021-12-28 04:08:22,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:08:22,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856497028] [2021-12-28 04:08:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:22,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:08:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:22,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:22,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:22,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:22,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 04:08:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:22,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:22,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-28 04:08:22,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:08:22,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856497028] [2021-12-28 04:08:22,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856497028] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:08:22,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:08:22,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 04:08:22,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823518020] [2021-12-28 04:08:22,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:08:22,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 04:08:22,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:08:22,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 04:08:22,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:08:22,218 INFO L87 Difference]: Start difference. First operand 415 states and 540 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-28 04:08:22,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:08:22,893 INFO L93 Difference]: Finished difference Result 980 states and 1316 transitions. [2021-12-28 04:08:22,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 04:08:22,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2021-12-28 04:08:22,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:08:22,898 INFO L225 Difference]: With dead ends: 980 [2021-12-28 04:08:22,898 INFO L226 Difference]: Without dead ends: 580 [2021-12-28 04:08:22,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-28 04:08:22,905 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 608 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 04:08:22,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 1492 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 04:08:22,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-12-28 04:08:22,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 418. [2021-12-28 04:08:22,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 317 states have (on average 1.2681388012618298) internal successors, (402), 324 states have internal predecessors, (402), 72 states have call successors, (72), 29 states have call predecessors, (72), 28 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-12-28 04:08:22,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 542 transitions. [2021-12-28 04:08:22,956 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 542 transitions. Word has length 55 [2021-12-28 04:08:22,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:08:22,957 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 542 transitions. [2021-12-28 04:08:22,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-28 04:08:22,957 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 542 transitions. [2021-12-28 04:08:22,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-28 04:08:22,958 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:08:22,958 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:08:22,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 04:08:22,959 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:08:22,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:08:22,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1898729455, now seen corresponding path program 1 times [2021-12-28 04:08:22,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:08:22,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367374107] [2021-12-28 04:08:22,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:22,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:08:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:23,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:23,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:23,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:23,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 04:08:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:23,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:23,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:23,060 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-28 04:08:23,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:08:23,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367374107] [2021-12-28 04:08:23,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367374107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:08:23,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:08:23,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 04:08:23,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266593125] [2021-12-28 04:08:23,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:08:23,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:08:23,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:08:23,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:08:23,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:08:23,063 INFO L87 Difference]: Start difference. First operand 418 states and 542 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 04:08:23,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:08:23,622 INFO L93 Difference]: Finished difference Result 1245 states and 1635 transitions. [2021-12-28 04:08:23,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:08:23,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2021-12-28 04:08:23,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:08:23,627 INFO L225 Difference]: With dead ends: 1245 [2021-12-28 04:08:23,627 INFO L226 Difference]: Without dead ends: 842 [2021-12-28 04:08:23,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:08:23,629 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 312 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 04:08:23,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 960 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 04:08:23,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-12-28 04:08:23,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 812. [2021-12-28 04:08:23,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 620 states have (on average 1.2629032258064516) internal successors, (783), 631 states have internal predecessors, (783), 137 states have call successors, (137), 55 states have call predecessors, (137), 54 states have return successors, (133), 133 states have call predecessors, (133), 133 states have call successors, (133) [2021-12-28 04:08:23,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1053 transitions. [2021-12-28 04:08:23,681 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1053 transitions. Word has length 55 [2021-12-28 04:08:23,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:08:23,682 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 1053 transitions. [2021-12-28 04:08:23,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 04:08:23,682 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1053 transitions. [2021-12-28 04:08:23,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-28 04:08:23,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:08:23,685 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:08:23,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 04:08:23,685 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:08:23,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:08:23,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1268938597, now seen corresponding path program 1 times [2021-12-28 04:08:23,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:08:23,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096028487] [2021-12-28 04:08:23,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:23,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:08:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:23,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:23,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:23,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:23,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 04:08:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:23,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:23,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:23,803 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-28 04:08:23,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:08:23,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096028487] [2021-12-28 04:08:23,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096028487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:08:23,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:08:23,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 04:08:23,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199639000] [2021-12-28 04:08:23,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:08:23,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:08:23,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:08:23,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:08:23,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:08:23,805 INFO L87 Difference]: Start difference. First operand 812 states and 1053 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 04:08:24,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:08:24,076 INFO L93 Difference]: Finished difference Result 842 states and 1102 transitions. [2021-12-28 04:08:24,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:08:24,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2021-12-28 04:08:24,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:08:24,080 INFO L225 Difference]: With dead ends: 842 [2021-12-28 04:08:24,080 INFO L226 Difference]: Without dead ends: 839 [2021-12-28 04:08:24,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:08:24,081 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 273 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 04:08:24,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 583 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 04:08:24,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-12-28 04:08:24,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 811. [2021-12-28 04:08:24,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 620 states have (on average 1.261290322580645) internal successors, (782), 630 states have internal predecessors, (782), 136 states have call successors, (136), 55 states have call predecessors, (136), 54 states have return successors, (133), 133 states have call predecessors, (133), 133 states have call successors, (133) [2021-12-28 04:08:24,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1051 transitions. [2021-12-28 04:08:24,123 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1051 transitions. Word has length 56 [2021-12-28 04:08:24,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:08:24,124 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 1051 transitions. [2021-12-28 04:08:24,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 04:08:24,124 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1051 transitions. [2021-12-28 04:08:24,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-28 04:08:24,125 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:08:24,126 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:08:24,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 04:08:24,126 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:08:24,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:08:24,127 INFO L85 PathProgramCache]: Analyzing trace with hash 682405268, now seen corresponding path program 1 times [2021-12-28 04:08:24,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:08:24,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592529716] [2021-12-28 04:08:24,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:24,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:08:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:24,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:24,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:24,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:24,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 04:08:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:24,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:24,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:24,238 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-28 04:08:24,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:08:24,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592529716] [2021-12-28 04:08:24,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592529716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:08:24,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:08:24,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 04:08:24,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015756089] [2021-12-28 04:08:24,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:08:24,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:08:24,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:08:24,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:08:24,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:08:24,241 INFO L87 Difference]: Start difference. First operand 811 states and 1051 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 04:08:24,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:08:24,481 INFO L93 Difference]: Finished difference Result 841 states and 1100 transitions. [2021-12-28 04:08:24,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:08:24,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2021-12-28 04:08:24,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:08:24,486 INFO L225 Difference]: With dead ends: 841 [2021-12-28 04:08:24,486 INFO L226 Difference]: Without dead ends: 838 [2021-12-28 04:08:24,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:08:24,487 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 270 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 04:08:24,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 579 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 04:08:24,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2021-12-28 04:08:24,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 810. [2021-12-28 04:08:24,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 620 states have (on average 1.2596774193548388) internal successors, (781), 629 states have internal predecessors, (781), 135 states have call successors, (135), 55 states have call predecessors, (135), 54 states have return successors, (133), 133 states have call predecessors, (133), 133 states have call successors, (133) [2021-12-28 04:08:24,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1049 transitions. [2021-12-28 04:08:24,521 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1049 transitions. Word has length 57 [2021-12-28 04:08:24,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:08:24,521 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 1049 transitions. [2021-12-28 04:08:24,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 04:08:24,521 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1049 transitions. [2021-12-28 04:08:24,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-28 04:08:24,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:08:24,523 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:08:24,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 04:08:24,523 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:08:24,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:08:24,524 INFO L85 PathProgramCache]: Analyzing trace with hash -320253880, now seen corresponding path program 1 times [2021-12-28 04:08:24,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:08:24,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221032546] [2021-12-28 04:08:24,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:24,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:08:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:24,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:24,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:24,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:24,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 04:08:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:24,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:24,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:24,646 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-28 04:08:24,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:08:24,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221032546] [2021-12-28 04:08:24,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221032546] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:08:24,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:08:24,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 04:08:24,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898610418] [2021-12-28 04:08:24,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:08:24,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:08:24,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:08:24,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:08:24,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:08:24,649 INFO L87 Difference]: Start difference. First operand 810 states and 1049 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 04:08:24,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:08:24,860 INFO L93 Difference]: Finished difference Result 840 states and 1098 transitions. [2021-12-28 04:08:24,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:08:24,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2021-12-28 04:08:24,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:08:24,864 INFO L225 Difference]: With dead ends: 840 [2021-12-28 04:08:24,864 INFO L226 Difference]: Without dead ends: 829 [2021-12-28 04:08:24,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:08:24,866 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 307 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 04:08:24,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 426 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 04:08:24,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2021-12-28 04:08:24,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 801. [2021-12-28 04:08:24,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 612 states have (on average 1.2581699346405228) internal successors, (770), 620 states have internal predecessors, (770), 134 states have call successors, (134), 55 states have call predecessors, (134), 54 states have return successors, (133), 133 states have call predecessors, (133), 133 states have call successors, (133) [2021-12-28 04:08:24,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1037 transitions. [2021-12-28 04:08:24,899 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1037 transitions. Word has length 58 [2021-12-28 04:08:24,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:08:24,899 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 1037 transitions. [2021-12-28 04:08:24,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 04:08:24,900 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1037 transitions. [2021-12-28 04:08:24,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-28 04:08:24,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:08:24,907 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:08:24,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 04:08:24,907 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:08:24,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:08:24,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1089358151, now seen corresponding path program 1 times [2021-12-28 04:08:24,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:08:24,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479518808] [2021-12-28 04:08:24,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:24,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:08:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:24,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:24,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:24,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 04:08:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-28 04:08:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 04:08:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 04:08:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:08:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 04:08:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 04:08:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 04:08:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 04:08:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 04:08:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-28 04:08:25,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:08:25,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479518808] [2021-12-28 04:08:25,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479518808] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:08:25,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:08:25,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 04:08:25,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299662254] [2021-12-28 04:08:25,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:08:25,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 04:08:25,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:08:25,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 04:08:25,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:08:25,120 INFO L87 Difference]: Start difference. First operand 801 states and 1037 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 04:08:25,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:08:25,494 INFO L93 Difference]: Finished difference Result 1679 states and 2193 transitions. [2021-12-28 04:08:25,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 04:08:25,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 152 [2021-12-28 04:08:25,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:08:25,499 INFO L225 Difference]: With dead ends: 1679 [2021-12-28 04:08:25,500 INFO L226 Difference]: Without dead ends: 893 [2021-12-28 04:08:25,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-28 04:08:25,503 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 224 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 04:08:25,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 768 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 04:08:25,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-12-28 04:08:25,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 855. [2021-12-28 04:08:25,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 665 states have (on average 1.2691729323308272) internal successors, (844), 673 states have internal predecessors, (844), 134 states have call successors, (134), 56 states have call predecessors, (134), 55 states have return successors, (133), 133 states have call predecessors, (133), 133 states have call successors, (133) [2021-12-28 04:08:25,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1111 transitions. [2021-12-28 04:08:25,542 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1111 transitions. Word has length 152 [2021-12-28 04:08:25,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:08:25,542 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1111 transitions. [2021-12-28 04:08:25,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 04:08:25,543 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1111 transitions. [2021-12-28 04:08:25,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-28 04:08:25,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:08:25,548 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:08:25,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 04:08:25,548 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:08:25,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:08:25,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1490878930, now seen corresponding path program 1 times [2021-12-28 04:08:25,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:08:25,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051065112] [2021-12-28 04:08:25,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:25,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:08:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 04:08:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 04:08:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 04:08:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 04:08:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 04:08:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 04:08:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 04:08:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 04:08:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-28 04:08:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 04:08:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:25,786 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-28 04:08:25,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:08:25,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051065112] [2021-12-28 04:08:25,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051065112] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:08:25,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:08:25,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 04:08:25,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46385406] [2021-12-28 04:08:25,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:08:25,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 04:08:25,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:08:25,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 04:08:25,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:08:25,789 INFO L87 Difference]: Start difference. First operand 855 states and 1111 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 04:08:26,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:08:26,302 INFO L93 Difference]: Finished difference Result 2289 states and 3072 transitions. [2021-12-28 04:08:26,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 04:08:26,302 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 161 [2021-12-28 04:08:26,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:08:26,309 INFO L225 Difference]: With dead ends: 2289 [2021-12-28 04:08:26,310 INFO L226 Difference]: Without dead ends: 1453 [2021-12-28 04:08:26,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-28 04:08:26,315 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 382 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 04:08:26,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 1954 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 04:08:26,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-12-28 04:08:26,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 867. [2021-12-28 04:08:26,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 677 states have (on average 1.2644017725258494) internal successors, (856), 685 states have internal predecessors, (856), 134 states have call successors, (134), 56 states have call predecessors, (134), 55 states have return successors, (133), 133 states have call predecessors, (133), 133 states have call successors, (133) [2021-12-28 04:08:26,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1123 transitions. [2021-12-28 04:08:26,360 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1123 transitions. Word has length 161 [2021-12-28 04:08:26,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:08:26,361 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 1123 transitions. [2021-12-28 04:08:26,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 04:08:26,361 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1123 transitions. [2021-12-28 04:08:26,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-28 04:08:26,364 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:08:26,365 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:08:26,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 04:08:26,365 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:08:26,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:08:26,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1123553049, now seen corresponding path program 1 times [2021-12-28 04:08:26,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:08:26,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119931310] [2021-12-28 04:08:26,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:26,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:08:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:26,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:26,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:26,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:26,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 04:08:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:26,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:26,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:26,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 04:08:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:26,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 04:08:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:26,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 04:08:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:26,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 04:08:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:26,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:26,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 04:08:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:26,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:26,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 04:08:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:26,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 04:08:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:26,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 04:08:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:26,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-28 04:08:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:26,629 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-28 04:08:26,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:08:26,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119931310] [2021-12-28 04:08:26,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119931310] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 04:08:26,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45836412] [2021-12-28 04:08:26,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:26,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:08:26,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:08:26,635 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 04:08:26,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 04:08:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:26,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1311 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 04:08:26,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 04:08:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-28 04:08:27,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 04:08:27,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45836412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:08:27,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 04:08:27,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2021-12-28 04:08:27,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975085295] [2021-12-28 04:08:27,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:08:27,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:08:27,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:08:27,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:08:27,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-28 04:08:27,247 INFO L87 Difference]: Start difference. First operand 867 states and 1123 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 04:08:27,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:08:27,445 INFO L93 Difference]: Finished difference Result 2809 states and 3670 transitions. [2021-12-28 04:08:27,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 04:08:27,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 163 [2021-12-28 04:08:27,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:08:27,453 INFO L225 Difference]: With dead ends: 2809 [2021-12-28 04:08:27,454 INFO L226 Difference]: Without dead ends: 1961 [2021-12-28 04:08:27,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-12-28 04:08:27,457 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 395 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 04:08:27,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 1873 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 04:08:27,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2021-12-28 04:08:27,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 903. [2021-12-28 04:08:27,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 705 states have (on average 1.2539007092198582) internal successors, (884), 713 states have internal predecessors, (884), 142 states have call successors, (142), 56 states have call predecessors, (142), 55 states have return successors, (141), 141 states have call predecessors, (141), 141 states have call successors, (141) [2021-12-28 04:08:27,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1167 transitions. [2021-12-28 04:08:27,525 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1167 transitions. Word has length 163 [2021-12-28 04:08:27,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:08:27,526 INFO L470 AbstractCegarLoop]: Abstraction has 903 states and 1167 transitions. [2021-12-28 04:08:27,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 04:08:27,526 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1167 transitions. [2021-12-28 04:08:27,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-28 04:08:27,529 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:08:27,529 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:08:27,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 04:08:27,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-28 04:08:27,744 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:08:27,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:08:27,744 INFO L85 PathProgramCache]: Analyzing trace with hash 112435799, now seen corresponding path program 1 times [2021-12-28 04:08:27,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:08:27,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936796510] [2021-12-28 04:08:27,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:27,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:08:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:27,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:27,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:27,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:27,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 04:08:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:27,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:27,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:27,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 04:08:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:27,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 04:08:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:27,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 04:08:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:27,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 04:08:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:27,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:27,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 04:08:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:27,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:27,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 04:08:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:27,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 04:08:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:27,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 04:08:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:27,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-28 04:08:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:27,983 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-12-28 04:08:27,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:08:27,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936796510] [2021-12-28 04:08:27,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936796510] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 04:08:27,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126393068] [2021-12-28 04:08:27,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:27,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:08:27,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:08:27,985 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 04:08:28,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 04:08:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:28,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 1306 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-28 04:08:28,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 04:08:28,604 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-28 04:08:28,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 04:08:28,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126393068] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:08:28,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 04:08:28,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 9 [2021-12-28 04:08:28,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657141948] [2021-12-28 04:08:28,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:08:28,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:08:28,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:08:28,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:08:28,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:08:28,607 INFO L87 Difference]: Start difference. First operand 903 states and 1167 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 04:08:28,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:08:28,688 INFO L93 Difference]: Finished difference Result 1815 states and 2371 transitions. [2021-12-28 04:08:28,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 04:08:28,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 163 [2021-12-28 04:08:28,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:08:28,693 INFO L225 Difference]: With dead ends: 1815 [2021-12-28 04:08:28,693 INFO L226 Difference]: Without dead ends: 931 [2021-12-28 04:08:28,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-28 04:08:28,696 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 1 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 04:08:28,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1118 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 04:08:28,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2021-12-28 04:08:28,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 919. [2021-12-28 04:08:28,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 717 states have (on average 1.2496513249651324) internal successors, (896), 725 states have internal predecessors, (896), 142 states have call successors, (142), 56 states have call predecessors, (142), 59 states have return successors, (161), 145 states have call predecessors, (161), 141 states have call successors, (161) [2021-12-28 04:08:28,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1199 transitions. [2021-12-28 04:08:28,760 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1199 transitions. Word has length 163 [2021-12-28 04:08:28,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:08:28,761 INFO L470 AbstractCegarLoop]: Abstraction has 919 states and 1199 transitions. [2021-12-28 04:08:28,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 04:08:28,761 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1199 transitions. [2021-12-28 04:08:28,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-28 04:08:28,765 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:08:28,765 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:08:28,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 04:08:28,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-28 04:08:28,980 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:08:28,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:08:28,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1029800077, now seen corresponding path program 1 times [2021-12-28 04:08:28,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:08:28,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366665777] [2021-12-28 04:08:28,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:28,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:08:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:29,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:29,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:29,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:29,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 04:08:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:29,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:29,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:29,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 04:08:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:29,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:29,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 04:08:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:29,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 04:08:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:29,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 04:08:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:29,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:29,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 04:08:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:29,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:29,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 04:08:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:29,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-28 04:08:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:29,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 04:08:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:29,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-28 04:08:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:29,388 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-28 04:08:29,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:08:29,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366665777] [2021-12-28 04:08:29,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366665777] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 04:08:29,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828791222] [2021-12-28 04:08:29,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:29,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:08:29,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:08:29,390 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 04:08:29,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 04:08:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:29,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-28 04:08:29,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 04:08:30,185 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-28 04:08:30,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 04:08:30,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828791222] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:08:30,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 04:08:30,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 16 [2021-12-28 04:08:30,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160178480] [2021-12-28 04:08:30,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:08:30,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 04:08:30,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:08:30,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 04:08:30,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-12-28 04:08:30,188 INFO L87 Difference]: Start difference. First operand 919 states and 1199 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 04:08:30,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:08:30,432 INFO L93 Difference]: Finished difference Result 2367 states and 3161 transitions. [2021-12-28 04:08:30,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 04:08:30,433 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) Word has length 169 [2021-12-28 04:08:30,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:08:30,439 INFO L225 Difference]: With dead ends: 2367 [2021-12-28 04:08:30,439 INFO L226 Difference]: Without dead ends: 1467 [2021-12-28 04:08:30,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-12-28 04:08:30,443 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 200 mSDsluCounter, 2987 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 04:08:30,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 3376 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 04:08:30,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2021-12-28 04:08:30,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 951. [2021-12-28 04:08:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 745 states have (on average 1.2402684563758388) internal successors, (924), 749 states have internal predecessors, (924), 142 states have call successors, (142), 56 states have call predecessors, (142), 63 states have return successors, (169), 153 states have call predecessors, (169), 141 states have call successors, (169) [2021-12-28 04:08:30,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1235 transitions. [2021-12-28 04:08:30,532 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1235 transitions. Word has length 169 [2021-12-28 04:08:30,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:08:30,533 INFO L470 AbstractCegarLoop]: Abstraction has 951 states and 1235 transitions. [2021-12-28 04:08:30,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 04:08:30,535 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1235 transitions. [2021-12-28 04:08:30,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-28 04:08:30,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:08:30,539 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-28 04:08:30,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 04:08:30,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:08:30,768 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:08:30,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:08:30,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1965723351, now seen corresponding path program 2 times [2021-12-28 04:08:30,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:08:30,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653486435] [2021-12-28 04:08:30,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:30,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:08:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:30,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:30,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:30,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:30,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 04:08:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:30,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:30,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:30,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 04:08:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:30,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:30,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 04:08:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:30,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 04:08:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 04:08:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 04:08:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 04:08:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 04:08:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-28 04:08:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-28 04:08:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:31,159 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-28 04:08:31,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:08:31,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653486435] [2021-12-28 04:08:31,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653486435] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 04:08:31,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956377147] [2021-12-28 04:08:31,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 04:08:31,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:08:31,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:08:31,161 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 04:08:31,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 04:08:31,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-28 04:08:31,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 04:08:31,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-28 04:08:31,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 04:08:31,792 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-12-28 04:08:31,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 04:08:31,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956377147] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:08:31,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 04:08:31,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2021-12-28 04:08:31,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855376515] [2021-12-28 04:08:31,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:08:31,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:08:31,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:08:31,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:08:31,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-12-28 04:08:31,794 INFO L87 Difference]: Start difference. First operand 951 states and 1235 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-28 04:08:32,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:08:32,130 INFO L93 Difference]: Finished difference Result 1923 states and 2587 transitions. [2021-12-28 04:08:32,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 04:08:32,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 175 [2021-12-28 04:08:32,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:08:32,137 INFO L225 Difference]: With dead ends: 1923 [2021-12-28 04:08:32,137 INFO L226 Difference]: Without dead ends: 1453 [2021-12-28 04:08:32,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-12-28 04:08:32,139 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 587 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 04:08:32,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 1809 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 04:08:32,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-12-28 04:08:32,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 957. [2021-12-28 04:08:32,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 751 states have (on average 1.2383488681757657) internal successors, (930), 755 states have internal predecessors, (930), 142 states have call successors, (142), 56 states have call predecessors, (142), 63 states have return successors, (169), 153 states have call predecessors, (169), 141 states have call successors, (169) [2021-12-28 04:08:32,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1241 transitions. [2021-12-28 04:08:32,235 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1241 transitions. Word has length 175 [2021-12-28 04:08:32,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:08:32,236 INFO L470 AbstractCegarLoop]: Abstraction has 957 states and 1241 transitions. [2021-12-28 04:08:32,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-28 04:08:32,236 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1241 transitions. [2021-12-28 04:08:32,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-28 04:08:32,239 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:08:32,240 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:08:32,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 04:08:32,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:08:32,464 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:08:32,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:08:32,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1151185806, now seen corresponding path program 1 times [2021-12-28 04:08:32,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:08:32,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460630923] [2021-12-28 04:08:32,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:32,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:08:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 04:08:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 04:08:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 04:08:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 04:08:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 04:08:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 04:08:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 04:08:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 04:08:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-28 04:08:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-28 04:08:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-28 04:08:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-28 04:08:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:32,742 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-12-28 04:08:32,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:08:32,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460630923] [2021-12-28 04:08:32,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460630923] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 04:08:32,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296701587] [2021-12-28 04:08:32,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:32,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:08:32,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:08:32,744 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 04:08:32,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 04:08:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:33,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1798 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 04:08:33,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 04:08:33,532 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-12-28 04:08:33,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 04:08:33,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296701587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:08:33,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 04:08:33,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2021-12-28 04:08:33,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989033335] [2021-12-28 04:08:33,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:08:33,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 04:08:33,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:08:33,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 04:08:33,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:08:33,534 INFO L87 Difference]: Start difference. First operand 957 states and 1241 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-28 04:08:33,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:08:33,849 INFO L93 Difference]: Finished difference Result 2835 states and 3686 transitions. [2021-12-28 04:08:33,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 04:08:33,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 206 [2021-12-28 04:08:33,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:08:33,860 INFO L225 Difference]: With dead ends: 2835 [2021-12-28 04:08:33,860 INFO L226 Difference]: Without dead ends: 2827 [2021-12-28 04:08:33,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:08:33,862 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 399 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 04:08:33,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 1079 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 04:08:33,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2021-12-28 04:08:34,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2813. [2021-12-28 04:08:34,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2813 states, 2211 states have (on average 1.2419719583898687) internal successors, (2746), 2227 states have internal predecessors, (2746), 418 states have call successors, (418), 160 states have call predecessors, (418), 183 states have return successors, (501), 449 states have call predecessors, (501), 417 states have call successors, (501) [2021-12-28 04:08:34,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 3665 transitions. [2021-12-28 04:08:34,146 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 3665 transitions. Word has length 206 [2021-12-28 04:08:34,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:08:34,146 INFO L470 AbstractCegarLoop]: Abstraction has 2813 states and 3665 transitions. [2021-12-28 04:08:34,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-28 04:08:34,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 3665 transitions. [2021-12-28 04:08:34,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-28 04:08:34,152 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:08:34,152 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:08:34,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 04:08:34,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-28 04:08:34,368 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:08:34,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:08:34,368 INFO L85 PathProgramCache]: Analyzing trace with hash 140068556, now seen corresponding path program 1 times [2021-12-28 04:08:34,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:08:34,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070225905] [2021-12-28 04:08:34,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:34,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:08:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 04:08:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 04:08:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 04:08:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 04:08:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 04:08:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 04:08:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 04:08:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 04:08:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-28 04:08:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-28 04:08:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-28 04:08:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-28 04:08:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:34,580 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-12-28 04:08:34,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:08:34,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070225905] [2021-12-28 04:08:34,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070225905] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:08:34,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:08:34,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 04:08:34,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257047410] [2021-12-28 04:08:34,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:08:34,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 04:08:34,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:08:34,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 04:08:34,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:08:34,582 INFO L87 Difference]: Start difference. First operand 2813 states and 3665 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-28 04:08:35,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:08:35,673 INFO L93 Difference]: Finished difference Result 8907 states and 11680 transitions. [2021-12-28 04:08:35,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-28 04:08:35,674 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 206 [2021-12-28 04:08:35,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:08:35,698 INFO L225 Difference]: With dead ends: 8907 [2021-12-28 04:08:35,699 INFO L226 Difference]: Without dead ends: 6113 [2021-12-28 04:08:35,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-12-28 04:08:35,708 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 545 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 04:08:35,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 1321 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 04:08:35,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6113 states. [2021-12-28 04:08:36,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6113 to 2825. [2021-12-28 04:08:36,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2223 states have (on average 1.2406657669815564) internal successors, (2758), 2243 states have internal predecessors, (2758), 418 states have call successors, (418), 160 states have call predecessors, (418), 183 states have return successors, (501), 445 states have call predecessors, (501), 417 states have call successors, (501) [2021-12-28 04:08:36,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 3677 transitions. [2021-12-28 04:08:36,039 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 3677 transitions. Word has length 206 [2021-12-28 04:08:36,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:08:36,042 INFO L470 AbstractCegarLoop]: Abstraction has 2825 states and 3677 transitions. [2021-12-28 04:08:36,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-28 04:08:36,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 3677 transitions. [2021-12-28 04:08:36,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-12-28 04:08:36,049 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:08:36,049 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:08:36,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 04:08:36,049 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:08:36,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:08:36,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1190503840, now seen corresponding path program 1 times [2021-12-28 04:08:36,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:08:36,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105709955] [2021-12-28 04:08:36,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:36,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:08:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 04:08:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:08:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 04:08:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 04:08:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 04:08:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 04:08:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 04:08:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:08:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:08:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 04:08:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 04:08:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-28 04:08:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-28 04:08:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-28 04:08:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-28 04:08:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-28 04:08:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-12-28 04:08:36,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:08:36,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105709955] [2021-12-28 04:08:36,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105709955] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 04:08:36,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212628723] [2021-12-28 04:08:36,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:08:36,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 04:08:36,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:08:36,502 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 04:08:36,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 04:08:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:08:36,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 1812 conjuncts, 138 conjunts are in the unsatisfiable core [2021-12-28 04:08:36,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 04:08:37,014 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 04:08:37,071 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-28 04:08:37,565 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-28 04:08:37,571 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1031 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.meminit_#ptr.base| v_ArrVal_1031) |c_#memory_int|)) is different from true [2021-12-28 04:08:37,640 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-28 04:08:37,642 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 04:08:37,724 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-28 04:08:37,724 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-28 04:08:37,728 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-28 04:08:37,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-28 04:08:41,950 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 04:08:44,111 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-28 04:08:44,111 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-28 04:08:44,686 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-28 04:08:44,687 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2021-12-28 04:08:49,091 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-28 04:08:49,091 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2021-12-28 04:09:17,558 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-28 04:09:17,559 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18