./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--raw.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--raw.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 793a6c625c75092f747de022bbd4fd421346f4483d489a12fa5057c55b9e4cfa --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 02:17:59,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 02:17:59,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 02:17:59,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 02:17:59,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 02:17:59,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 02:17:59,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 02:17:59,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 02:17:59,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 02:17:59,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 02:17:59,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 02:17:59,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 02:17:59,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 02:17:59,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 02:17:59,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 02:17:59,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 02:17:59,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 02:17:59,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 02:17:59,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 02:17:59,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 02:17:59,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 02:17:59,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 02:17:59,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 02:17:59,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 02:17:59,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 02:17:59,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 02:17:59,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 02:17:59,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 02:17:59,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 02:17:59,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 02:17:59,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 02:17:59,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 02:17:59,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 02:17:59,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 02:17:59,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 02:17:59,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 02:17:59,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 02:17:59,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 02:17:59,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 02:17:59,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 02:17:59,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 02:17:59,837 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 02:17:59,859 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 02:17:59,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 02:17:59,860 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 02:17:59,860 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 02:17:59,861 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 02:17:59,861 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 02:17:59,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 02:17:59,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 02:17:59,862 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 02:17:59,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 02:17:59,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 02:17:59,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 02:17:59,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 02:17:59,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 02:17:59,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 02:17:59,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 02:17:59,863 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 02:17:59,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 02:17:59,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 02:17:59,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 02:17:59,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 02:17:59,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 02:17:59,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 02:17:59,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 02:17:59,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 02:17:59,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 02:17:59,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 02:17:59,865 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 02:17:59,865 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 02:17:59,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 02:17:59,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 02:17:59,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 793a6c625c75092f747de022bbd4fd421346f4483d489a12fa5057c55b9e4cfa [2021-11-17 02:18:00,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 02:18:00,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 02:18:00,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 02:18:00,085 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 02:18:00,085 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 02:18:00,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--raw.ko-entry_point.cil.out.i [2021-11-17 02:18:00,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e8249d7a/d3242bfec8c94edd86c6869ca034b356/FLAG3d6585ad9 [2021-11-17 02:18:00,672 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 02:18:00,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--raw.ko-entry_point.cil.out.i [2021-11-17 02:18:00,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e8249d7a/d3242bfec8c94edd86c6869ca034b356/FLAG3d6585ad9 [2021-11-17 02:18:01,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e8249d7a/d3242bfec8c94edd86c6869ca034b356 [2021-11-17 02:18:01,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 02:18:01,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 02:18:01,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 02:18:01,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 02:18:01,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 02:18:01,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 02:18:01" (1/1) ... [2021-11-17 02:18:01,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4beaf608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:18:01, skipping insertion in model container [2021-11-17 02:18:01,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 02:18:01" (1/1) ... [2021-11-17 02:18:01,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 02:18:01,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 02:18:01,772 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--raw.ko-entry_point.cil.out.i[135044,135057] [2021-11-17 02:18:01,804 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 02:18:01,826 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 02:18:01,973 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--raw.ko-entry_point.cil.out.i[135044,135057] [2021-11-17 02:18:01,989 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 02:18:02,011 INFO L208 MainTranslator]: Completed translation [2021-11-17 02:18:02,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:18:02 WrapperNode [2021-11-17 02:18:02,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 02:18:02,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 02:18:02,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 02:18:02,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 02:18:02,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:18:02" (1/1) ... [2021-11-17 02:18:02,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:18:02" (1/1) ... [2021-11-17 02:18:02,118 INFO L137 Inliner]: procedures = 114, calls = 417, calls flagged for inlining = 49, calls inlined = 46, statements flattened = 1196 [2021-11-17 02:18:02,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 02:18:02,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 02:18:02,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 02:18:02,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 02:18:02,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:18:02" (1/1) ... [2021-11-17 02:18:02,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:18:02" (1/1) ... [2021-11-17 02:18:02,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:18:02" (1/1) ... [2021-11-17 02:18:02,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:18:02" (1/1) ... [2021-11-17 02:18:02,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:18:02" (1/1) ... [2021-11-17 02:18:02,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:18:02" (1/1) ... [2021-11-17 02:18:02,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:18:02" (1/1) ... [2021-11-17 02:18:02,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 02:18:02,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 02:18:02,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 02:18:02,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 02:18:02,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:18:02" (1/1) ... [2021-11-17 02:18:02,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 02:18:02,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:18:02,238 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) [2021-11-17 02:18:02,240 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 [2021-11-17 02:18:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure raw_open [2021-11-17 02:18:02,265 INFO L138 BoogieDeclarations]: Found implementation of procedure raw_open [2021-11-17 02:18:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2021-11-17 02:18:02,265 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2021-11-17 02:18:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 02:18:02,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 02:18:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 02:18:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-17 02:18:02,266 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-17 02:18:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure blkdev_read_iter [2021-11-17 02:18:02,266 INFO L138 BoogieDeclarations]: Found implementation of procedure blkdev_read_iter [2021-11-17 02:18:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 02:18:02,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 02:18:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-11-17 02:18:02,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-11-17 02:18:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure bind_get [2021-11-17 02:18:02,267 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_get [2021-11-17 02:18:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 02:18:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-17 02:18:02,267 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-17 02:18:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-17 02:18:02,267 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-17 02:18:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-17 02:18:02,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-17 02:18:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 02:18:02,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 02:18:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure bind_set [2021-11-17 02:18:02,268 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_set [2021-11-17 02:18:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure blkdev_put [2021-11-17 02:18:02,268 INFO L138 BoogieDeclarations]: Found implementation of procedure blkdev_put [2021-11-17 02:18:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-17 02:18:02,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-17 02:18:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-17 02:18:02,269 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-17 02:18:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 02:18:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-17 02:18:02,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-17 02:18:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-17 02:18:02,269 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-17 02:18:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 02:18:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 02:18:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 02:18:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 02:18:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-17 02:18:02,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-17 02:18:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2021-11-17 02:18:02,270 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2021-11-17 02:18:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 02:18:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 02:18:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure blkdev_fsync [2021-11-17 02:18:02,271 INFO L138 BoogieDeclarations]: Found implementation of procedure blkdev_fsync [2021-11-17 02:18:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-11-17 02:18:02,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-11-17 02:18:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2021-11-17 02:18:02,271 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2021-11-17 02:18:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2021-11-17 02:18:02,271 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2021-11-17 02:18:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-17 02:18:02,271 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-17 02:18:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure blkdev_write_iter [2021-11-17 02:18:02,272 INFO L138 BoogieDeclarations]: Found implementation of procedure blkdev_write_iter [2021-11-17 02:18:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 02:18:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 02:18:02,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 02:18:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-17 02:18:02,272 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-17 02:18:02,499 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 02:18:02,500 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 02:18:02,703 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 02:18:03,202 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 02:18:03,211 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 02:18:03,211 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-17 02:18:03,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 02:18:03 BoogieIcfgContainer [2021-11-17 02:18:03,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 02:18:03,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 02:18:03,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 02:18:03,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 02:18:03,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 02:18:01" (1/3) ... [2021-11-17 02:18:03,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16527a00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 02:18:03, skipping insertion in model container [2021-11-17 02:18:03,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:18:02" (2/3) ... [2021-11-17 02:18:03,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16527a00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 02:18:03, skipping insertion in model container [2021-11-17 02:18:03,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 02:18:03" (3/3) ... [2021-11-17 02:18:03,220 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--char--raw.ko-entry_point.cil.out.i [2021-11-17 02:18:03,227 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 02:18:03,227 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 02:18:03,260 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 02:18:03,265 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 [2021-11-17 02:18:03,265 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 02:18:03,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 380 states, 273 states have (on average 1.3333333333333333) internal successors, (364), 282 states have internal predecessors, (364), 79 states have call successors, (79), 27 states have call predecessors, (79), 26 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2021-11-17 02:18:03,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-17 02:18:03,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:18:03,306 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:18:03,306 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:18:03,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:18:03,310 INFO L85 PathProgramCache]: Analyzing trace with hash -391938554, now seen corresponding path program 1 times [2021-11-17 02:18:03,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:18:03,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842232608] [2021-11-17 02:18:03,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:18:03,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:18:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:18:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:18:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:18:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:18:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 02:18:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 02:18:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 02:18:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-17 02:18:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-17 02:18:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 02:18:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 02:18:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 02:18:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 02:18:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 02:18:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 02:18:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 02:18:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 02:18:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:18:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-11-17 02:18:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:03,950 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-11-17 02:18:03,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:18:03,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842232608] [2021-11-17 02:18:03,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842232608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:18:03,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:18:03,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 02:18:03,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257444729] [2021-11-17 02:18:03,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:18:03,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 02:18:03,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:18:03,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 02:18:03,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 02:18:03,986 INFO L87 Difference]: Start difference. First operand has 380 states, 273 states have (on average 1.3333333333333333) internal successors, (364), 282 states have internal predecessors, (364), 79 states have call successors, (79), 27 states have call predecessors, (79), 26 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 02:18:04,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:18:04,582 INFO L93 Difference]: Finished difference Result 788 states and 1107 transitions. [2021-11-17 02:18:04,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 02:18:04,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 178 [2021-11-17 02:18:04,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:18:04,601 INFO L225 Difference]: With dead ends: 788 [2021-11-17 02:18:04,601 INFO L226 Difference]: Without dead ends: 402 [2021-11-17 02:18:04,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-17 02:18:04,617 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 260 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-17 02:18:04,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 939 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-17 02:18:04,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-11-17 02:18:04,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 369. [2021-11-17 02:18:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 268 states have (on average 1.3134328358208955) internal successors, (352), 271 states have internal predecessors, (352), 75 states have call successors, (75), 26 states have call predecessors, (75), 25 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-11-17 02:18:04,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 500 transitions. [2021-11-17 02:18:04,704 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 500 transitions. Word has length 178 [2021-11-17 02:18:04,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:18:04,705 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 500 transitions. [2021-11-17 02:18:04,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 02:18:04,705 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 500 transitions. [2021-11-17 02:18:04,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-17 02:18:04,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:18:04,709 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:18:04,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 02:18:04,710 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:18:04,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:18:04,710 INFO L85 PathProgramCache]: Analyzing trace with hash -236302322, now seen corresponding path program 1 times [2021-11-17 02:18:04,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:18:04,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135099913] [2021-11-17 02:18:04,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:18:04,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:18:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:04,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:18:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:04,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:04,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:04,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:18:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:04,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:04,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:04,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:18:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:04,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:04,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:04,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:18:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:04,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:04,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:04,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 02:18:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:04,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 02:18:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:04,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 02:18:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:04,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-17 02:18:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:04,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-17 02:18:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:04,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 02:18:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:04,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 02:18:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:04,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 02:18:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:04,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 02:18:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:05,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 02:18:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:05,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 02:18:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:05,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 02:18:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:05,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-17 02:18:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:05,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-17 02:18:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:05,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-11-17 02:18:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-11-17 02:18:05,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:18:05,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135099913] [2021-11-17 02:18:05,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135099913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:18:05,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:18:05,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 02:18:05,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987805012] [2021-11-17 02:18:05,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:18:05,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 02:18:05,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:18:05,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 02:18:05,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 02:18:05,044 INFO L87 Difference]: Start difference. First operand 369 states and 500 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (22), 5 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 02:18:05,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:18:05,842 INFO L93 Difference]: Finished difference Result 1045 states and 1426 transitions. [2021-11-17 02:18:05,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 02:18:05,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (22), 5 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 178 [2021-11-17 02:18:05,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:18:05,850 INFO L225 Difference]: With dead ends: 1045 [2021-11-17 02:18:05,850 INFO L226 Difference]: Without dead ends: 716 [2021-11-17 02:18:05,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-17 02:18:05,855 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 823 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-17 02:18:05,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 1527 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-17 02:18:05,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-11-17 02:18:05,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 651. [2021-11-17 02:18:05,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 479 states have (on average 1.3298538622129437) internal successors, (637), 483 states have internal predecessors, (637), 122 states have call successors, (122), 50 states have call predecessors, (122), 49 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2021-11-17 02:18:05,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 879 transitions. [2021-11-17 02:18:05,882 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 879 transitions. Word has length 178 [2021-11-17 02:18:05,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:18:05,883 INFO L470 AbstractCegarLoop]: Abstraction has 651 states and 879 transitions. [2021-11-17 02:18:05,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (22), 5 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 02:18:05,883 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 879 transitions. [2021-11-17 02:18:05,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-17 02:18:05,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:18:05,885 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:18:05,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-17 02:18:05,885 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:18:05,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:18:05,886 INFO L85 PathProgramCache]: Analyzing trace with hash -376464015, now seen corresponding path program 1 times [2021-11-17 02:18:05,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:18:05,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427248520] [2021-11-17 02:18:05,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:18:05,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:18:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:05,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:18:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:05,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:05,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:05,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:18:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:05,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:18:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:18:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 02:18:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 02:18:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 02:18:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-17 02:18:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-17 02:18:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 02:18:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 02:18:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 02:18:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 02:18:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 02:18:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 02:18:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 02:18:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 02:18:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-11-17 02:18:06,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:18:06,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427248520] [2021-11-17 02:18:06,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427248520] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:18:06,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:18:06,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 02:18:06,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488100374] [2021-11-17 02:18:06,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:18:06,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 02:18:06,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:18:06,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 02:18:06,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-17 02:18:06,194 INFO L87 Difference]: Start difference. First operand 651 states and 879 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-17 02:18:06,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:18:06,727 INFO L93 Difference]: Finished difference Result 1348 states and 1840 transitions. [2021-11-17 02:18:06,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 02:18:06,728 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 177 [2021-11-17 02:18:06,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:18:06,732 INFO L225 Difference]: With dead ends: 1348 [2021-11-17 02:18:06,732 INFO L226 Difference]: Without dead ends: 747 [2021-11-17 02:18:06,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-17 02:18:06,734 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 954 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-17 02:18:06,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [996 Valid, 877 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-17 02:18:06,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-11-17 02:18:06,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 651. [2021-11-17 02:18:06,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 479 states have (on average 1.3277661795407099) internal successors, (636), 483 states have internal predecessors, (636), 122 states have call successors, (122), 50 states have call predecessors, (122), 49 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2021-11-17 02:18:06,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 878 transitions. [2021-11-17 02:18:06,760 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 878 transitions. Word has length 177 [2021-11-17 02:18:06,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:18:06,761 INFO L470 AbstractCegarLoop]: Abstraction has 651 states and 878 transitions. [2021-11-17 02:18:06,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-17 02:18:06,761 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 878 transitions. [2021-11-17 02:18:06,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-17 02:18:06,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:18:06,763 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:18:06,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-17 02:18:06,764 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:18:06,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:18:06,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2065407757, now seen corresponding path program 1 times [2021-11-17 02:18:06,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:18:06,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965034728] [2021-11-17 02:18:06,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:18:06,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:18:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:18:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:18:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:18:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:18:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 02:18:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 02:18:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 02:18:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-17 02:18:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-17 02:18:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 02:18:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 02:18:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 02:18:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 02:18:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 02:18:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 02:18:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 02:18:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:06,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 02:18:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,002 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-11-17 02:18:07,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:18:07,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965034728] [2021-11-17 02:18:07,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965034728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:18:07,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:18:07,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 02:18:07,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503038545] [2021-11-17 02:18:07,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:18:07,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 02:18:07,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:18:07,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 02:18:07,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-17 02:18:07,004 INFO L87 Difference]: Start difference. First operand 651 states and 878 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-17 02:18:07,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:18:07,449 INFO L93 Difference]: Finished difference Result 757 states and 1034 transitions. [2021-11-17 02:18:07,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 02:18:07,449 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 177 [2021-11-17 02:18:07,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:18:07,453 INFO L225 Difference]: With dead ends: 757 [2021-11-17 02:18:07,453 INFO L226 Difference]: Without dead ends: 752 [2021-11-17 02:18:07,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-17 02:18:07,454 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 861 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-17 02:18:07,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [925 Valid, 917 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-17 02:18:07,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-11-17 02:18:07,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 651. [2021-11-17 02:18:07,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 479 states have (on average 1.325678496868476) internal successors, (635), 483 states have internal predecessors, (635), 122 states have call successors, (122), 50 states have call predecessors, (122), 49 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2021-11-17 02:18:07,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 877 transitions. [2021-11-17 02:18:07,482 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 877 transitions. Word has length 177 [2021-11-17 02:18:07,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:18:07,482 INFO L470 AbstractCegarLoop]: Abstraction has 651 states and 877 transitions. [2021-11-17 02:18:07,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-17 02:18:07,483 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 877 transitions. [2021-11-17 02:18:07,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-17 02:18:07,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:18:07,485 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:18:07,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-17 02:18:07,485 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:18:07,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:18:07,486 INFO L85 PathProgramCache]: Analyzing trace with hash -2008149455, now seen corresponding path program 1 times [2021-11-17 02:18:07,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:18:07,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726376331] [2021-11-17 02:18:07,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:18:07,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:18:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:18:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:18:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:18:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:18:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 02:18:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 02:18:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 02:18:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-17 02:18:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-17 02:18:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 02:18:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 02:18:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 02:18:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 02:18:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 02:18:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 02:18:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 02:18:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 02:18:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-11-17 02:18:07,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:18:07,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726376331] [2021-11-17 02:18:07,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726376331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:18:07,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:18:07,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 02:18:07,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002077123] [2021-11-17 02:18:07,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:18:07,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 02:18:07,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:18:07,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 02:18:07,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-17 02:18:07,733 INFO L87 Difference]: Start difference. First operand 651 states and 877 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 02:18:08,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:18:08,495 INFO L93 Difference]: Finished difference Result 2038 states and 2790 transitions. [2021-11-17 02:18:08,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 02:18:08,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 177 [2021-11-17 02:18:08,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:18:08,502 INFO L225 Difference]: With dead ends: 2038 [2021-11-17 02:18:08,502 INFO L226 Difference]: Without dead ends: 1421 [2021-11-17 02:18:08,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-17 02:18:08,505 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 1211 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-17 02:18:08,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1257 Valid, 1302 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-17 02:18:08,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2021-11-17 02:18:08,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 1233. [2021-11-17 02:18:08,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 916 states have (on average 1.3351528384279476) internal successors, (1223), 925 states have internal predecessors, (1223), 221 states have call successors, (221), 94 states have call predecessors, (221), 95 states have return successors, (227), 219 states have call predecessors, (227), 219 states have call successors, (227) [2021-11-17 02:18:08,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1671 transitions. [2021-11-17 02:18:08,549 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1671 transitions. Word has length 177 [2021-11-17 02:18:08,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:18:08,550 INFO L470 AbstractCegarLoop]: Abstraction has 1233 states and 1671 transitions. [2021-11-17 02:18:08,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 02:18:08,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1671 transitions. [2021-11-17 02:18:08,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-17 02:18:08,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:18:08,552 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:18:08,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-17 02:18:08,553 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:18:08,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:18:08,553 INFO L85 PathProgramCache]: Analyzing trace with hash 889145816, now seen corresponding path program 1 times [2021-11-17 02:18:08,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:18:08,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663387327] [2021-11-17 02:18:08,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:18:08,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:18:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:18:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:18:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:18:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:18:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 02:18:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 02:18:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 02:18:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-17 02:18:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-17 02:18:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 02:18:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 02:18:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 02:18:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 02:18:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 02:18:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 02:18:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 02:18:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-17 02:18:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 02:18:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-11-17 02:18:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-11-17 02:18:08,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:18:08,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663387327] [2021-11-17 02:18:08,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663387327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:18:08,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:18:08,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 02:18:08,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440255762] [2021-11-17 02:18:08,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:18:08,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 02:18:08,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:18:08,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 02:18:08,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-17 02:18:08,762 INFO L87 Difference]: Start difference. First operand 1233 states and 1671 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-17 02:18:09,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:18:09,383 INFO L93 Difference]: Finished difference Result 3218 states and 4347 transitions. [2021-11-17 02:18:09,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 02:18:09,383 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 198 [2021-11-17 02:18:09,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:18:09,390 INFO L225 Difference]: With dead ends: 3218 [2021-11-17 02:18:09,391 INFO L226 Difference]: Without dead ends: 2035 [2021-11-17 02:18:09,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-17 02:18:09,396 INFO L933 BasicCegarLoop]: 496 mSDtfsCounter, 812 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-17 02:18:09,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [847 Valid, 1062 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-17 02:18:09,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2021-11-17 02:18:09,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 1813. [2021-11-17 02:18:09,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1356 states have (on average 1.3325958702064897) internal successors, (1807), 1368 states have internal predecessors, (1807), 310 states have call successors, (310), 145 states have call predecessors, (310), 146 states have return successors, (316), 307 states have call predecessors, (316), 308 states have call successors, (316) [2021-11-17 02:18:09,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2433 transitions. [2021-11-17 02:18:09,455 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2433 transitions. Word has length 198 [2021-11-17 02:18:09,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:18:09,456 INFO L470 AbstractCegarLoop]: Abstraction has 1813 states and 2433 transitions. [2021-11-17 02:18:09,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-17 02:18:09,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2433 transitions. [2021-11-17 02:18:09,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-11-17 02:18:09,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:18:09,460 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:18:09,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-17 02:18:09,460 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:18:09,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:18:09,461 INFO L85 PathProgramCache]: Analyzing trace with hash 828309769, now seen corresponding path program 1 times [2021-11-17 02:18:09,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:18:09,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558954718] [2021-11-17 02:18:09,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:18:09,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:18:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:18:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:18:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:18:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:18:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 02:18:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 02:18:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 02:18:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-17 02:18:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-17 02:18:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 02:18:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 02:18:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 02:18:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 02:18:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 02:18:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 02:18:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 02:18:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 02:18:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 02:18:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-17 02:18:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-17 02:18:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-11-17 02:18:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 02:18:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-11-17 02:18:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:09,751 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2021-11-17 02:18:09,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:18:09,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558954718] [2021-11-17 02:18:09,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558954718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:18:09,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:18:09,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 02:18:09,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517117127] [2021-11-17 02:18:09,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:18:09,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 02:18:09,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:18:09,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 02:18:09,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-17 02:18:09,753 INFO L87 Difference]: Start difference. First operand 1813 states and 2433 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-17 02:18:10,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:18:10,723 INFO L93 Difference]: Finished difference Result 4634 states and 6245 transitions. [2021-11-17 02:18:10,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 02:18:10,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 263 [2021-11-17 02:18:10,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:18:10,735 INFO L225 Difference]: With dead ends: 4634 [2021-11-17 02:18:10,735 INFO L226 Difference]: Without dead ends: 2871 [2021-11-17 02:18:10,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-17 02:18:10,741 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 522 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-17 02:18:10,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 2253 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-17 02:18:10,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2021-11-17 02:18:10,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2429. [2021-11-17 02:18:10,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 1838 states have (on average 1.3346028291621328) internal successors, (2453), 1850 states have internal predecessors, (2453), 396 states have call successors, (396), 193 states have call predecessors, (396), 194 states have return successors, (402), 393 states have call predecessors, (402), 394 states have call successors, (402) [2021-11-17 02:18:10,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 3251 transitions. [2021-11-17 02:18:10,863 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 3251 transitions. Word has length 263 [2021-11-17 02:18:10,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:18:10,863 INFO L470 AbstractCegarLoop]: Abstraction has 2429 states and 3251 transitions. [2021-11-17 02:18:10,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-17 02:18:10,864 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 3251 transitions. [2021-11-17 02:18:10,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-17 02:18:10,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:18:10,869 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:18:10,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-17 02:18:10,870 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:18:10,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:18:10,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1940414032, now seen corresponding path program 1 times [2021-11-17 02:18:10,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:18:10,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357431601] [2021-11-17 02:18:10,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:18:10,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:18:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:18:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:18:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:18:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:18:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 02:18:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 02:18:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 02:18:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-17 02:18:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-17 02:18:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 02:18:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 02:18:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 02:18:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 02:18:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 02:18:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 02:18:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 02:18:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 02:18:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 02:18:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-17 02:18:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-17 02:18:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-11-17 02:18:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-11-17 02:18:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 02:18:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-11-17 02:18:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2021-11-17 02:18:11,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:18:11,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357431601] [2021-11-17 02:18:11,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357431601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:18:11,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:18:11,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-17 02:18:11,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249693547] [2021-11-17 02:18:11,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:18:11,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-17 02:18:11,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:18:11,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-17 02:18:11,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-17 02:18:11,262 INFO L87 Difference]: Start difference. First operand 2429 states and 3251 transitions. Second operand has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-17 02:18:12,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:18:12,548 INFO L93 Difference]: Finished difference Result 8025 states and 10790 transitions. [2021-11-17 02:18:12,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-17 02:18:12,549 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 282 [2021-11-17 02:18:12,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:18:12,567 INFO L225 Difference]: With dead ends: 8025 [2021-11-17 02:18:12,568 INFO L226 Difference]: Without dead ends: 5646 [2021-11-17 02:18:12,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-11-17 02:18:12,574 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 1185 mSDsluCounter, 2756 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 3482 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-17 02:18:12,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1249 Valid, 3482 Invalid, 1815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-17 02:18:12,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5646 states. [2021-11-17 02:18:12,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5646 to 4292. [2021-11-17 02:18:12,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4292 states, 3259 states have (on average 1.3402884320343664) internal successors, (4368), 3286 states have internal predecessors, (4368), 686 states have call successors, (686), 333 states have call predecessors, (686), 346 states have return successors, (726), 684 states have call predecessors, (726), 684 states have call successors, (726) [2021-11-17 02:18:12,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 5780 transitions. [2021-11-17 02:18:12,718 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 5780 transitions. Word has length 282 [2021-11-17 02:18:12,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:18:12,718 INFO L470 AbstractCegarLoop]: Abstraction has 4292 states and 5780 transitions. [2021-11-17 02:18:12,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-17 02:18:12,718 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 5780 transitions. [2021-11-17 02:18:12,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-17 02:18:12,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:18:12,725 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:18:12,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-17 02:18:12,725 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:18:12,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:18:12,726 INFO L85 PathProgramCache]: Analyzing trace with hash -588257547, now seen corresponding path program 1 times [2021-11-17 02:18:12,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:18:12,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522984675] [2021-11-17 02:18:12,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:18:12,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:18:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:12,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:18:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:12,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:12,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:12,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:18:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:12,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:12,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:12,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:18:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:12,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:12,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:12,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:18:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:12,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:12,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:12,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 02:18:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 02:18:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 02:18:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-17 02:18:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-17 02:18:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 02:18:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 02:18:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 02:18:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 02:18:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 02:18:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 02:18:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 02:18:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 02:18:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:18:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:18:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-17 02:18:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-11-17 02:18:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-17 02:18:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-17 02:18:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-11-17 02:18:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-11-17 02:18:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 02:18:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-11-17 02:18:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,155 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2021-11-17 02:18:13,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:18:13,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522984675] [2021-11-17 02:18:13,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522984675] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:18:13,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627363666] [2021-11-17 02:18:13,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:18:13,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:18:13,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:18:13,157 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) [2021-11-17 02:18:13,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-17 02:18:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:13,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 2196 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-17 02:18:13,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:18:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2021-11-17 02:18:14,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 02:18:14,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627363666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:18:14,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 02:18:14,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-11-17 02:18:14,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063957607] [2021-11-17 02:18:14,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:18:14,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 02:18:14,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:18:14,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 02:18:14,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-17 02:18:14,036 INFO L87 Difference]: Start difference. First operand 4292 states and 5780 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-17 02:18:14,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:18:14,150 INFO L93 Difference]: Finished difference Result 5892 states and 7871 transitions. [2021-11-17 02:18:14,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-17 02:18:14,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 302 [2021-11-17 02:18:14,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:18:14,160 INFO L225 Difference]: With dead ends: 5892 [2021-11-17 02:18:14,160 INFO L226 Difference]: Without dead ends: 1604 [2021-11-17 02:18:14,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-17 02:18:14,170 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 20 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 02:18:14,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1979 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 02:18:14,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2021-11-17 02:18:14,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1523. [2021-11-17 02:18:14,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1128 states have (on average 1.3067375886524824) internal successors, (1474), 1140 states have internal predecessors, (1474), 257 states have call successors, (257), 133 states have call predecessors, (257), 137 states have return successors, (264), 252 states have call predecessors, (264), 255 states have call successors, (264) [2021-11-17 02:18:14,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1995 transitions. [2021-11-17 02:18:14,225 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1995 transitions. Word has length 302 [2021-11-17 02:18:14,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:18:14,226 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 1995 transitions. [2021-11-17 02:18:14,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-17 02:18:14,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1995 transitions. [2021-11-17 02:18:14,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-17 02:18:14,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:18:14,237 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:18:14,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-17 02:18:14,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:18:14,449 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:18:14,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:18:14,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1188421738, now seen corresponding path program 1 times [2021-11-17 02:18:14,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:18:14,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739553748] [2021-11-17 02:18:14,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:18:14,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:18:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:18:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:18:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:18:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:18:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 02:18:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-17 02:18:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 02:18:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-17 02:18:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-17 02:18:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 02:18:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 02:18:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-17 02:18:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 02:18:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 02:18:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-17 02:18:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 02:18:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 02:18:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:18:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:18:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-17 02:18:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-11-17 02:18:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-17 02:18:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-17 02:18:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-11-17 02:18:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-11-17 02:18:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-11-17 02:18:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 02:18:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2021-11-17 02:18:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2021-11-17 02:18:14,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:18:14,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739553748] [2021-11-17 02:18:14,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739553748] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:18:14,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345700377] [2021-11-17 02:18:14,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:18:14,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:18:14,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:18:14,803 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) [2021-11-17 02:18:14,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-17 02:18:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:15,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 2264 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-17 02:18:15,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:18:15,827 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2021-11-17 02:18:15,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 02:18:15,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345700377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 02:18:15,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 02:18:15,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2021-11-17 02:18:15,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137394566] [2021-11-17 02:18:15,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:18:15,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 02:18:15,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:18:15,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 02:18:15,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-17 02:18:15,829 INFO L87 Difference]: Start difference. First operand 1523 states and 1995 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-17 02:18:15,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:18:15,913 INFO L93 Difference]: Finished difference Result 3024 states and 3976 transitions. [2021-11-17 02:18:15,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 02:18:15,913 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), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 316 [2021-11-17 02:18:15,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:18:15,919 INFO L225 Difference]: With dead ends: 3024 [2021-11-17 02:18:15,920 INFO L226 Difference]: Without dead ends: 1524 [2021-11-17 02:18:15,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-17 02:18:15,924 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 3 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 02:18:15,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1466 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 02:18:15,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-11-17 02:18:15,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1524. [2021-11-17 02:18:15,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1129 states have (on average 1.3064658990256866) internal successors, (1475), 1141 states have internal predecessors, (1475), 257 states have call successors, (257), 133 states have call predecessors, (257), 137 states have return successors, (264), 252 states have call predecessors, (264), 255 states have call successors, (264) [2021-11-17 02:18:15,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 1996 transitions. [2021-11-17 02:18:15,977 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 1996 transitions. Word has length 316 [2021-11-17 02:18:15,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:18:15,978 INFO L470 AbstractCegarLoop]: Abstraction has 1524 states and 1996 transitions. [2021-11-17 02:18:15,978 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), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-17 02:18:15,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 1996 transitions. [2021-11-17 02:18:15,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-11-17 02:18:15,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:18:15,983 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:18:16,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-17 02:18:16,204 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,SelfDestructingSolverStorable9 [2021-11-17 02:18:16,205 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:18:16,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:18:16,205 INFO L85 PathProgramCache]: Analyzing trace with hash -239751075, now seen corresponding path program 1 times [2021-11-17 02:18:16,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:18:16,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078777102] [2021-11-17 02:18:16,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:18:16,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:18:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:18:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:18:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:18:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:18:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 02:18:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-17 02:18:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-17 02:18:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 02:18:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-17 02:18:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-17 02:18:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 02:18:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-17 02:18:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-17 02:18:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-17 02:18:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-11-17 02:18:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-11-17 02:18:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-11-17 02:18:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:18:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:18:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-17 02:18:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-11-17 02:18:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-11-17 02:18:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-11-17 02:18:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-11-17 02:18:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2021-11-17 02:18:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-11-17 02:18:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 02:18:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-11-17 02:18:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2021-11-17 02:18:16,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:18:16,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078777102] [2021-11-17 02:18:16,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078777102] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:18:16,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478401438] [2021-11-17 02:18:16,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:18:16,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:18:16,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:18:16,604 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) [2021-11-17 02:18:16,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-17 02:18:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:17,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 2346 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-17 02:18:17,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:18:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 310 proven. 3 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2021-11-17 02:18:17,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 02:18:18,542 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 7 proven. 71 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2021-11-17 02:18:18,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478401438] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 02:18:18,542 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 02:18:18,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 5] total 17 [2021-11-17 02:18:18,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577992284] [2021-11-17 02:18:18,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 02:18:18,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-17 02:18:18,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:18:18,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-17 02:18:18,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-11-17 02:18:18,545 INFO L87 Difference]: Start difference. First operand 1524 states and 1996 transitions. Second operand has 17 states, 17 states have (on average 10.764705882352942) internal successors, (183), 12 states have internal predecessors, (183), 2 states have call successors, (85), 7 states have call predecessors, (85), 5 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2021-11-17 02:18:19,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:18:19,633 INFO L93 Difference]: Finished difference Result 3276 states and 4316 transitions. [2021-11-17 02:18:19,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-17 02:18:19,634 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.764705882352942) internal successors, (183), 12 states have internal predecessors, (183), 2 states have call successors, (85), 7 states have call predecessors, (85), 5 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) Word has length 326 [2021-11-17 02:18:19,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:18:19,640 INFO L225 Difference]: With dead ends: 3276 [2021-11-17 02:18:19,640 INFO L226 Difference]: Without dead ends: 1772 [2021-11-17 02:18:19,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2021-11-17 02:18:19,644 INFO L933 BasicCegarLoop]: 448 mSDtfsCounter, 573 mSDsluCounter, 2281 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 2729 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-17 02:18:19,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 2729 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-17 02:18:19,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2021-11-17 02:18:19,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1534. [2021-11-17 02:18:19,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1138 states have (on average 1.304920913884007) internal successors, (1485), 1150 states have internal predecessors, (1485), 257 states have call successors, (257), 134 states have call predecessors, (257), 138 states have return successors, (264), 252 states have call predecessors, (264), 255 states have call successors, (264) [2021-11-17 02:18:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 2006 transitions. [2021-11-17 02:18:19,692 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 2006 transitions. Word has length 326 [2021-11-17 02:18:19,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:18:19,693 INFO L470 AbstractCegarLoop]: Abstraction has 1534 states and 2006 transitions. [2021-11-17 02:18:19,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.764705882352942) internal successors, (183), 12 states have internal predecessors, (183), 2 states have call successors, (85), 7 states have call predecessors, (85), 5 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2021-11-17 02:18:19,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 2006 transitions. [2021-11-17 02:18:19,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-11-17 02:18:19,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:18:19,696 INFO L514 BasicCegarLoop]: trace histogram [38, 12, 12, 12, 12, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:18:19,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-17 02:18:19,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:18:19,909 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:18:19,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:18:19,910 INFO L85 PathProgramCache]: Analyzing trace with hash -798832011, now seen corresponding path program 2 times [2021-11-17 02:18:19,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:18:19,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365614653] [2021-11-17 02:18:19,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:18:19,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:18:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:18:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:18:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:18:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:18:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 02:18:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-17 02:18:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 02:18:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 02:18:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-17 02:18:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 02:18:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-17 02:18:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 02:18:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-17 02:18:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 02:18:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-11-17 02:18:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-17 02:18:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-11-17 02:18:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:18:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:18:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-17 02:18:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-11-17 02:18:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-11-17 02:18:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-11-17 02:18:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-11-17 02:18:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-11-17 02:18:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-11-17 02:18:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 02:18:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-11-17 02:18:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:20,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 177 refuted. 0 times theorem prover too weak. 1594 trivial. 0 not checked. [2021-11-17 02:18:20,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:18:20,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365614653] [2021-11-17 02:18:20,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365614653] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:18:20,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748103081] [2021-11-17 02:18:20,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-17 02:18:20,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:18:20,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:18:20,455 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) [2021-11-17 02:18:20,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-17 02:18:20,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-17 02:18:20,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-17 02:18:20,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 2502 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-17 02:18:20,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:18:21,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 329 proven. 3 refuted. 0 times theorem prover too weak. 1439 trivial. 0 not checked. [2021-11-17 02:18:21,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 02:18:22,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 177 refuted. 0 times theorem prover too weak. 1594 trivial. 0 not checked. [2021-11-17 02:18:22,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748103081] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 02:18:22,075 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-17 02:18:22,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 18 [2021-11-17 02:18:22,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245751810] [2021-11-17 02:18:22,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-17 02:18:22,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-17 02:18:22,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:18:22,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-17 02:18:22,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-11-17 02:18:22,077 INFO L87 Difference]: Start difference. First operand 1534 states and 2006 transitions. Second operand has 18 states, 18 states have (on average 10.055555555555555) internal successors, (181), 13 states have internal predecessors, (181), 2 states have call successors, (86), 7 states have call predecessors, (86), 4 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-17 02:18:23,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:18:23,222 INFO L93 Difference]: Finished difference Result 3288 states and 4317 transitions. [2021-11-17 02:18:23,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-17 02:18:23,223 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.055555555555555) internal successors, (181), 13 states have internal predecessors, (181), 2 states have call successors, (86), 7 states have call predecessors, (86), 4 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 352 [2021-11-17 02:18:23,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:18:23,231 INFO L225 Difference]: With dead ends: 3288 [2021-11-17 02:18:23,231 INFO L226 Difference]: Without dead ends: 1774 [2021-11-17 02:18:23,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 806 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2021-11-17 02:18:23,237 INFO L933 BasicCegarLoop]: 454 mSDtfsCounter, 423 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-17 02:18:23,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 2801 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-17 02:18:23,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2021-11-17 02:18:23,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1536. [2021-11-17 02:18:23,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1140 states have (on average 1.3043859649122806) internal successors, (1487), 1152 states have internal predecessors, (1487), 257 states have call successors, (257), 134 states have call predecessors, (257), 138 states have return successors, (264), 252 states have call predecessors, (264), 255 states have call successors, (264) [2021-11-17 02:18:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 2008 transitions. [2021-11-17 02:18:23,302 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 2008 transitions. Word has length 352 [2021-11-17 02:18:23,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:18:23,303 INFO L470 AbstractCegarLoop]: Abstraction has 1536 states and 2008 transitions. [2021-11-17 02:18:23,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.055555555555555) internal successors, (181), 13 states have internal predecessors, (181), 2 states have call successors, (86), 7 states have call predecessors, (86), 4 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-17 02:18:23,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 2008 transitions. [2021-11-17 02:18:23,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2021-11-17 02:18:23,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:18:23,308 INFO L514 BasicCegarLoop]: trace histogram [48, 12, 12, 12, 12, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:18:23,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-17 02:18:23,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:18:23,516 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:18:23,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:18:23,516 INFO L85 PathProgramCache]: Analyzing trace with hash -124252010, now seen corresponding path program 1 times [2021-11-17 02:18:23,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 02:18:23,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396152923] [2021-11-17 02:18:23,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:18:23,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 02:18:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:18:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 02:18:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 02:18:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-17 02:18:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 02:18:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-17 02:18:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-17 02:18:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-17 02:18:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-17 02:18:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-17 02:18:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-17 02:18:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 02:18:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-11-17 02:18:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-11-17 02:18:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-17 02:18:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:23,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-17 02:18:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-17 02:18:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 02:18:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-17 02:18:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-17 02:18:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-11-17 02:18:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-11-17 02:18:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 02:18:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-11-17 02:18:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-11-17 02:18:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-11-17 02:18:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-11-17 02:18:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 02:18:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-17 02:18:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2021-11-17 02:18:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2318 backedges. 28 proven. 290 refuted. 0 times theorem prover too weak. 2000 trivial. 0 not checked. [2021-11-17 02:18:24,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 02:18:24,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396152923] [2021-11-17 02:18:24,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396152923] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-17 02:18:24,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521633670] [2021-11-17 02:18:24,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:18:24,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 02:18:24,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:18:24,114 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) [2021-11-17 02:18:24,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-17 02:18:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:18:24,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 2552 conjuncts, 300 conjunts are in the unsatisfiable core [2021-11-17 02:18:24,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:18:24,800 INFO L354 Elim1Store]: treesize reduction 288, result has 0.3 percent of original size [2021-11-17 02:18:24,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 226 treesize of output 208 [2021-11-17 02:18:27,801 INFO L388 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 14 treesize of output 10 [2021-11-17 02:18:27,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:18:27,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-17 02:18:27,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:18:27,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:18:27,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:18:27,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-17 02:18:27,975 INFO L354 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-11-17 02:18:27,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 44 [2021-11-17 02:18:28,784 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-17 02:18:28,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 13 [2021-11-17 02:18:55,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:18:55,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:18:55,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:18:55,566 INFO L354 Elim1Store]: treesize reduction 742, result has 6.7 percent of original size [2021-11-17 02:18:55,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 107 [2021-11-17 02:19:01,654 INFO L354 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2021-11-17 02:19:01,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 82 treesize of output 26 [2021-11-17 02:19:48,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:19:48,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:19:48,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:19:48,699 INFO L354 Elim1Store]: treesize reduction 1794, result has 4.7 percent of original size [2021-11-17 02:19:48,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 179 treesize of output 184 [2021-11-17 02:19:57,102 INFO L354 Elim1Store]: treesize reduction 736, result has 0.1 percent of original size [2021-11-17 02:19:57,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 3 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 127 treesize of output 43 [2021-11-17 02:21:11,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:21:11,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:21:11,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:21:12,217 INFO L354 Elim1Store]: treesize reduction 3102, result has 3.9 percent of original size [2021-11-17 02:21:12,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 9 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 240 treesize of output 257 [2021-11-17 02:21:27,599 INFO L354 Elim1Store]: treesize reduction 1488, result has 0.1 percent of original size [2021-11-17 02:21:27,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 3 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 184 treesize of output 64 [2021-11-17 02:23:10,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:23:10,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:23:10,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:23:11,728 INFO L354 Elim1Store]: treesize reduction 4666, result has 3.3 percent of original size [2021-11-17 02:23:11,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 8 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 120 case distinctions, treesize of input 309 treesize of output 326 [2021-11-17 02:23:30,817 INFO L354 Elim1Store]: treesize reduction 2496, result has 0.0 percent of original size [2021-11-17 02:23:30,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 3 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 245 treesize of output 89 [2021-11-17 02:25:41,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:25:41,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:25:41,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:25:43,932 INFO L354 Elim1Store]: treesize reduction 6486, result has 2.9 percent of original size [2021-11-17 02:25:43,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 7 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 190 case distinctions, treesize of input 374 treesize of output 391 [2021-11-17 02:26:09,088 INFO L354 Elim1Store]: treesize reduction 3760, result has 0.0 percent of original size [2021-11-17 02:26:09,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 23 select indices, 23 select index equivalence classes, 3 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 253 case distinctions, treesize of input 310 treesize of output 118 [2021-11-17 02:28:53,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:28:53,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:28:53,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-17 02:28:58,565 INFO L354 Elim1Store]: treesize reduction 8562, result has 2.6 percent of original size [2021-11-17 02:28:58,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 6 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 276 case distinctions, treesize of input 435 treesize of output 452 [2021-11-17 02:29:30,203 INFO L354 Elim1Store]: treesize reduction 5280, result has 0.0 percent of original size [2021-11-17 02:29:30,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 27 select indices, 27 select index equivalence classes, 3 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 351 case distinctions, treesize of input 379 treesize of output 151 [2021-11-17 02:30:44,886 WARN L228 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-17 02:30:44,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-17 02:30:44,887 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-17 02:30:44,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-17 02:30:44,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368029250] [2021-11-17 02:30:44,887 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-17 02:30:44,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-17 02:30:44,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 02:30:44,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-17 02:30:44,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2003, Unknown=689, NotChecked=0, Total=2862 [2021-11-17 02:30:44,888 INFO L87 Difference]: Start difference. First operand 1536 states and 2008 transitions. Second operand has 13 states, 13 states have (on average 9.692307692307692) internal successors, (126), 8 states have internal predecessors, (126), 2 states have call successors, (36), 7 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-17 02:30:44,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-17 02:30:44,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 675.2s TimeCoverageRelationStatistics Valid=170, Invalid=2003, Unknown=689, NotChecked=0, Total=2862 [2021-11-17 02:30:44,896 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 02:30:44,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 02:30:44,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-17 02:30:44,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-17 02:30:45,107 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,SelfDestructingSolverStorable12 [2021-11-17 02:30:45,108 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@1079ca10 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-17 02:30:45,112 INFO L158 Benchmark]: Toolchain (without parser) took 763995.02ms. Allocated memory was 102.8MB in the beginning and 553.6MB in the end (delta: 450.9MB). Free memory was 59.3MB in the beginning and 304.0MB in the end (delta: -244.7MB). Peak memory consumption was 206.4MB. Max. memory is 16.1GB. [2021-11-17 02:30:45,112 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 102.8MB. Free memory is still 81.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-17 02:30:45,112 INFO L158 Benchmark]: CACSL2BoogieTranslator took 894.96ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 59.1MB in the beginning and 81.6MB in the end (delta: -22.5MB). Peak memory consumption was 35.2MB. Max. memory is 16.1GB. [2021-11-17 02:30:45,112 INFO L158 Benchmark]: Boogie Procedure Inliner took 105.19ms. Allocated memory is still 125.8MB. Free memory was 81.0MB in the beginning and 73.5MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-17 02:30:45,113 INFO L158 Benchmark]: Boogie Preprocessor took 68.32ms. Allocated memory is still 125.8MB. Free memory was 73.5MB in the beginning and 67.0MB in the end (delta: 6.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-17 02:30:45,113 INFO L158 Benchmark]: RCFGBuilder took 1024.55ms. Allocated memory was 125.8MB in the beginning and 159.4MB in the end (delta: 33.6MB). Free memory was 67.0MB in the beginning and 89.0MB in the end (delta: -22.0MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. [2021-11-17 02:30:45,113 INFO L158 Benchmark]: TraceAbstraction took 761897.37ms. Allocated memory was 159.4MB in the beginning and 553.6MB in the end (delta: 394.3MB). Free memory was 89.0MB in the beginning and 304.0MB in the end (delta: -215.0MB). Peak memory consumption was 179.3MB. Max. memory is 16.1GB. [2021-11-17 02:30:45,114 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 102.8MB. Free memory is still 81.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 894.96ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 59.1MB in the beginning and 81.6MB in the end (delta: -22.5MB). Peak memory consumption was 35.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 105.19ms. Allocated memory is still 125.8MB. Free memory was 81.0MB in the beginning and 73.5MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.32ms. Allocated memory is still 125.8MB. Free memory was 73.5MB in the beginning and 67.0MB in the end (delta: 6.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1024.55ms. Allocated memory was 125.8MB in the beginning and 159.4MB in the end (delta: 33.6MB). Free memory was 67.0MB in the beginning and 89.0MB in the end (delta: -22.0MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. * TraceAbstraction took 761897.37ms. Allocated memory was 159.4MB in the beginning and 553.6MB in the end (delta: 394.3MB). Free memory was 89.0MB in the beginning and 304.0MB in the end (delta: -215.0MB). Peak memory consumption was 179.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@1079ca10 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@1079ca10: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--raw.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 793a6c625c75092f747de022bbd4fd421346f4483d489a12fa5057c55b9e4cfa --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 02:30:46,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 02:30:46,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 02:30:46,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 02:30:46,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 02:30:46,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 02:30:46,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 02:30:46,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 02:30:46,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 02:30:46,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 02:30:46,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 02:30:46,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 02:30:46,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 02:30:46,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 02:30:46,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 02:30:46,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 02:30:46,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 02:30:46,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 02:30:46,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 02:30:46,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 02:30:46,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 02:30:46,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 02:30:46,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 02:30:46,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 02:30:46,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 02:30:46,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 02:30:46,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 02:30:46,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 02:30:46,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 02:30:46,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 02:30:46,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 02:30:46,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 02:30:46,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 02:30:46,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 02:30:46,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 02:30:46,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 02:30:46,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 02:30:46,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 02:30:46,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 02:30:46,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 02:30:46,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 02:30:46,628 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-17 02:30:46,645 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 02:30:46,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 02:30:46,645 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 02:30:46,645 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 02:30:46,646 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 02:30:46,646 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 02:30:46,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 02:30:46,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 02:30:46,647 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 02:30:46,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 02:30:46,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 02:30:46,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 02:30:46,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 02:30:46,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 02:30:46,647 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-17 02:30:46,647 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-17 02:30:46,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 02:30:46,647 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 02:30:46,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 02:30:46,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 02:30:46,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 02:30:46,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 02:30:46,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 02:30:46,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 02:30:46,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 02:30:46,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 02:30:46,649 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-17 02:30:46,649 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-17 02:30:46,649 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 02:30:46,649 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 02:30:46,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 02:30:46,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 02:30:46,650 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-17 02:30:46,650 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 793a6c625c75092f747de022bbd4fd421346f4483d489a12fa5057c55b9e4cfa [2021-11-17 02:30:46,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 02:30:46,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 02:30:46,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 02:30:46,917 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 02:30:46,919 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 02:30:46,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--raw.ko-entry_point.cil.out.i [2021-11-17 02:30:46,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b77750a1a/f87f660136434af8abcebbc16686d9e3/FLAGc4defd90c [2021-11-17 02:30:47,502 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 02:30:47,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--raw.ko-entry_point.cil.out.i [2021-11-17 02:30:47,527 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b77750a1a/f87f660136434af8abcebbc16686d9e3/FLAGc4defd90c [2021-11-17 02:30:47,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b77750a1a/f87f660136434af8abcebbc16686d9e3 [2021-11-17 02:30:47,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 02:30:47,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 02:30:47,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 02:30:47,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 02:30:48,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 02:30:48,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 02:30:47" (1/1) ... [2021-11-17 02:30:48,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f4d82fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:30:48, skipping insertion in model container [2021-11-17 02:30:48,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 02:30:47" (1/1) ... [2021-11-17 02:30:48,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 02:30:48,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 02:30:48,693 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--raw.ko-entry_point.cil.out.i[135044,135057] [2021-11-17 02:30:48,717 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 02:30:48,738 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 02:30:48,893 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--raw.ko-entry_point.cil.out.i[135044,135057] [2021-11-17 02:30:48,898 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 02:30:48,932 INFO L208 MainTranslator]: Completed translation [2021-11-17 02:30:48,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:30:48 WrapperNode [2021-11-17 02:30:48,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 02:30:48,933 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 02:30:48,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 02:30:48,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 02:30:48,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:30:48" (1/1) ... [2021-11-17 02:30:48,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:30:48" (1/1) ... [2021-11-17 02:30:49,019 INFO L137 Inliner]: procedures = 122, calls = 417, calls flagged for inlining = 49, calls inlined = 46, statements flattened = 1155 [2021-11-17 02:30:49,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 02:30:49,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 02:30:49,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 02:30:49,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 02:30:49,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:30:48" (1/1) ... [2021-11-17 02:30:49,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:30:48" (1/1) ... [2021-11-17 02:30:49,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:30:48" (1/1) ... [2021-11-17 02:30:49,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:30:48" (1/1) ... [2021-11-17 02:30:49,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:30:48" (1/1) ... [2021-11-17 02:30:49,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:30:48" (1/1) ... [2021-11-17 02:30:49,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:30:48" (1/1) ... [2021-11-17 02:30:49,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 02:30:49,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 02:30:49,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 02:30:49,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 02:30:49,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:30:48" (1/1) ... [2021-11-17 02:30:49,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 02:30:49,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 02:30:49,148 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) [2021-11-17 02:30:49,166 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 [2021-11-17 02:30:49,178 INFO L130 BoogieDeclarations]: Found specification of procedure raw_open [2021-11-17 02:30:49,178 INFO L138 BoogieDeclarations]: Found implementation of procedure raw_open [2021-11-17 02:30:49,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-17 02:30:49,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-17 02:30:49,179 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2021-11-17 02:30:49,179 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2021-11-17 02:30:49,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-17 02:30:49,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 02:30:49,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 02:30:49,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-17 02:30:49,180 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-17 02:30:49,180 INFO L130 BoogieDeclarations]: Found specification of procedure blkdev_read_iter [2021-11-17 02:30:49,180 INFO L138 BoogieDeclarations]: Found implementation of procedure blkdev_read_iter [2021-11-17 02:30:49,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 02:30:49,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 02:30:49,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-11-17 02:30:49,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-11-17 02:30:49,181 INFO L130 BoogieDeclarations]: Found specification of procedure bind_get [2021-11-17 02:30:49,181 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_get [2021-11-17 02:30:49,181 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-17 02:30:49,181 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-17 02:30:49,181 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-17 02:30:49,181 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-17 02:30:49,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-17 02:30:49,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-17 02:30:49,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 02:30:49,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 02:30:49,181 INFO L130 BoogieDeclarations]: Found specification of procedure bind_set [2021-11-17 02:30:49,181 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_set [2021-11-17 02:30:49,182 INFO L130 BoogieDeclarations]: Found specification of procedure blkdev_put [2021-11-17 02:30:49,182 INFO L138 BoogieDeclarations]: Found implementation of procedure blkdev_put [2021-11-17 02:30:49,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-17 02:30:49,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-17 02:30:49,182 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-17 02:30:49,182 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-17 02:30:49,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 02:30:49,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-17 02:30:49,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-17 02:30:49,182 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-17 02:30:49,182 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-17 02:30:49,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 02:30:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 02:30:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 02:30:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 02:30:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-17 02:30:49,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-17 02:30:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2021-11-17 02:30:49,183 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2021-11-17 02:30:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-17 02:30:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 02:30:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-17 02:30:49,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 02:30:49,184 INFO L130 BoogieDeclarations]: Found specification of procedure blkdev_fsync [2021-11-17 02:30:49,184 INFO L138 BoogieDeclarations]: Found implementation of procedure blkdev_fsync [2021-11-17 02:30:49,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-17 02:30:49,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-17 02:30:49,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-17 02:30:49,185 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-11-17 02:30:49,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-11-17 02:30:49,186 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2021-11-17 02:30:49,186 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2021-11-17 02:30:49,186 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2021-11-17 02:30:49,186 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2021-11-17 02:30:49,186 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-17 02:30:49,186 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-17 02:30:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure blkdev_write_iter [2021-11-17 02:30:49,187 INFO L138 BoogieDeclarations]: Found implementation of procedure blkdev_write_iter [2021-11-17 02:30:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 02:30:49,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 02:30:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-17 02:30:49,187 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-17 02:30:49,495 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 02:30:49,496 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 02:30:49,840 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 02:30:50,789 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 02:30:50,813 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 02:30:50,814 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-17 02:30:50,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 02:30:50 BoogieIcfgContainer [2021-11-17 02:30:50,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 02:30:50,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 02:30:50,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 02:30:50,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 02:30:50,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 02:30:47" (1/3) ... [2021-11-17 02:30:50,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f849a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 02:30:50, skipping insertion in model container [2021-11-17 02:30:50,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:30:48" (2/3) ... [2021-11-17 02:30:50,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f849a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 02:30:50, skipping insertion in model container [2021-11-17 02:30:50,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 02:30:50" (3/3) ... [2021-11-17 02:30:50,822 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--char--raw.ko-entry_point.cil.out.i [2021-11-17 02:30:50,826 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 02:30:50,826 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 02:30:50,870 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 02:30:50,875 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 [2021-11-17 02:30:50,876 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 02:30:50,896 INFO L276 IsEmpty]: Start isEmpty. Operand has 380 states, 273 states have (on average 1.3333333333333333) internal successors, (364), 282 states have internal predecessors, (364), 79 states have call successors, (79), 27 states have call predecessors, (79), 26 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2021-11-17 02:30:50,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-17 02:30:50,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:30:50,914 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:30:50,914 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:30:50,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:30:50,919 INFO L85 PathProgramCache]: Analyzing trace with hash -391938554, now seen corresponding path program 1 times [2021-11-17 02:30:50,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 02:30:50,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162606736] [2021-11-17 02:30:50,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:30:50,931 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 02:30:50,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 02:30:50,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 02:30:50,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-17 02:30:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:30:51,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-17 02:30:51,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:30:51,820 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-11-17 02:30:51,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 02:30:52,162 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-17 02:30:52,162 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 02:30:52,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162606736] [2021-11-17 02:30:52,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162606736] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-17 02:30:52,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 02:30:52,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-17 02:30:52,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251120391] [2021-11-17 02:30:52,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:30:52,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-17 02:30:52,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 02:30:52,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-17 02:30:52,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-17 02:30:52,193 INFO L87 Difference]: Start difference. First operand has 380 states, 273 states have (on average 1.3333333333333333) internal successors, (364), 282 states have internal predecessors, (364), 79 states have call successors, (79), 27 states have call predecessors, (79), 26 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-17 02:30:52,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:30:52,269 INFO L93 Difference]: Finished difference Result 755 states and 1049 transitions. [2021-11-17 02:30:52,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-17 02:30:52,272 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 178 [2021-11-17 02:30:52,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:30:52,285 INFO L225 Difference]: With dead ends: 755 [2021-11-17 02:30:52,286 INFO L226 Difference]: Without dead ends: 369 [2021-11-17 02:30:52,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-17 02:30:52,299 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 02:30:52,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 02:30:52,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-11-17 02:30:52,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2021-11-17 02:30:52,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 268 states have (on average 1.3134328358208955) internal successors, (352), 271 states have internal predecessors, (352), 75 states have call successors, (75), 26 states have call predecessors, (75), 25 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-11-17 02:30:52,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 500 transitions. [2021-11-17 02:30:52,385 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 500 transitions. Word has length 178 [2021-11-17 02:30:52,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:30:52,385 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 500 transitions. [2021-11-17 02:30:52,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-17 02:30:52,386 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 500 transitions. [2021-11-17 02:30:52,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-17 02:30:52,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:30:52,393 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:30:52,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-17 02:30:52,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 02:30:52,594 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:30:52,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:30:52,595 INFO L85 PathProgramCache]: Analyzing trace with hash -236302322, now seen corresponding path program 1 times [2021-11-17 02:30:52,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 02:30:52,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862629110] [2021-11-17 02:30:52,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:30:52,596 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 02:30:52,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 02:30:52,597 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 02:30:52,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-17 02:30:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:30:53,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-17 02:30:53,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:30:53,388 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2021-11-17 02:30:53,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 02:30:53,765 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-11-17 02:30:53,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 02:30:53,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862629110] [2021-11-17 02:30:53,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862629110] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-17 02:30:53,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 02:30:53,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-17 02:30:53,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953973350] [2021-11-17 02:30:53,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:30:53,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 02:30:53,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 02:30:53,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 02:30:53,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-17 02:30:53,768 INFO L87 Difference]: Start difference. First operand 369 states and 500 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 02:30:53,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:30:53,864 INFO L93 Difference]: Finished difference Result 730 states and 999 transitions. [2021-11-17 02:30:53,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 02:30:53,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 178 [2021-11-17 02:30:53,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:30:53,871 INFO L225 Difference]: With dead ends: 730 [2021-11-17 02:30:53,871 INFO L226 Difference]: Without dead ends: 370 [2021-11-17 02:30:53,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-17 02:30:53,876 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 3 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-17 02:30:53,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1469 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-17 02:30:53,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-11-17 02:30:53,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2021-11-17 02:30:53,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 269 states have (on average 1.312267657992565) internal successors, (353), 272 states have internal predecessors, (353), 75 states have call successors, (75), 26 states have call predecessors, (75), 25 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-11-17 02:30:53,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 501 transitions. [2021-11-17 02:30:53,895 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 501 transitions. Word has length 178 [2021-11-17 02:30:53,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:30:53,896 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 501 transitions. [2021-11-17 02:30:53,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 02:30:53,898 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 501 transitions. [2021-11-17 02:30:53,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-17 02:30:53,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:30:53,900 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:30:53,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-17 02:30:54,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 02:30:54,120 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:30:54,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:30:54,120 INFO L85 PathProgramCache]: Analyzing trace with hash -607481962, now seen corresponding path program 1 times [2021-11-17 02:30:54,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 02:30:54,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872406995] [2021-11-17 02:30:54,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:30:54,122 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 02:30:54,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 02:30:54,123 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 02:30:54,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-17 02:30:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:30:54,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-17 02:30:54,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:30:55,026 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 88 proven. 1 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2021-11-17 02:30:55,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 02:30:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2021-11-17 02:30:55,525 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 02:30:55,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872406995] [2021-11-17 02:30:55,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872406995] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 02:30:55,526 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-17 02:30:55,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-17 02:30:55,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15859209] [2021-11-17 02:30:55,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-17 02:30:55,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 02:30:55,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 02:30:55,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 02:30:55,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-17 02:30:55,528 INFO L87 Difference]: Start difference. First operand 370 states and 501 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-17 02:30:55,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:30:55,865 INFO L93 Difference]: Finished difference Result 741 states and 1018 transitions. [2021-11-17 02:30:55,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-17 02:30:55,867 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 190 [2021-11-17 02:30:55,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:30:55,869 INFO L225 Difference]: With dead ends: 741 [2021-11-17 02:30:55,870 INFO L226 Difference]: Without dead ends: 380 [2021-11-17 02:30:55,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-11-17 02:30:55,871 INFO L933 BasicCegarLoop]: 491 mSDtfsCounter, 16 mSDsluCounter, 1915 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-17 02:30:55,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 2406 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-17 02:30:55,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-11-17 02:30:55,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2021-11-17 02:30:55,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 278 states have (on average 1.3129496402877698) internal successors, (365), 281 states have internal predecessors, (365), 75 states have call successors, (75), 27 states have call predecessors, (75), 26 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-11-17 02:30:55,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 513 transitions. [2021-11-17 02:30:55,882 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 513 transitions. Word has length 190 [2021-11-17 02:30:55,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:30:55,882 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 513 transitions. [2021-11-17 02:30:55,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-17 02:30:55,883 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 513 transitions. [2021-11-17 02:30:55,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-17 02:30:55,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:30:55,894 INFO L514 BasicCegarLoop]: trace histogram [34, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:30:55,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-17 02:30:56,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 02:30:56,100 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:30:56,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:30:56,100 INFO L85 PathProgramCache]: Analyzing trace with hash -505122834, now seen corresponding path program 2 times [2021-11-17 02:30:56,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 02:30:56,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283516938] [2021-11-17 02:30:56,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-17 02:30:56,102 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 02:30:56,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 02:30:56,103 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 02:30:56,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-17 02:30:56,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-17 02:30:56,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-17 02:30:56,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 02:30:56,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:30:56,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1383 trivial. 0 not checked. [2021-11-17 02:30:56,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 02:30:57,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1383 trivial. 0 not checked. [2021-11-17 02:30:57,030 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 02:30:57,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283516938] [2021-11-17 02:30:57,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283516938] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-17 02:30:57,030 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:30:57,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-17 02:30:57,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631848722] [2021-11-17 02:30:57,030 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-17 02:30:57,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 02:30:57,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 02:30:57,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 02:30:57,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-17 02:30:57,031 INFO L87 Difference]: Start difference. First operand 380 states and 513 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-17 02:30:57,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:30:57,510 INFO L93 Difference]: Finished difference Result 1262 states and 1709 transitions. [2021-11-17 02:30:57,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 02:30:57,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 212 [2021-11-17 02:30:57,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:30:57,514 INFO L225 Difference]: With dead ends: 1262 [2021-11-17 02:30:57,514 INFO L226 Difference]: Without dead ends: 933 [2021-11-17 02:30:57,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-17 02:30:57,515 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 847 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-17 02:30:57,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [847 Valid, 1647 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-17 02:30:57,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2021-11-17 02:30:57,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 927. [2021-11-17 02:30:57,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 689 states have (on average 1.3425253991291728) internal successors, (925), 694 states have internal predecessors, (925), 167 states have call successors, (167), 71 states have call predecessors, (167), 70 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2021-11-17 02:30:57,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1257 transitions. [2021-11-17 02:30:57,539 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1257 transitions. Word has length 212 [2021-11-17 02:30:57,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:30:57,540 INFO L470 AbstractCegarLoop]: Abstraction has 927 states and 1257 transitions. [2021-11-17 02:30:57,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-17 02:30:57,540 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1257 transitions. [2021-11-17 02:30:57,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-17 02:30:57,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:30:57,542 INFO L514 BasicCegarLoop]: trace histogram [34, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:30:57,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-17 02:30:57,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 02:30:57,754 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:30:57,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:30:57,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1138885009, now seen corresponding path program 1 times [2021-11-17 02:30:57,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 02:30:57,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257163088] [2021-11-17 02:30:57,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:30:57,757 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 02:30:57,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 02:30:57,758 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 02:30:57,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-17 02:30:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:30:58,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-17 02:30:58,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:30:58,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 402 proven. 3 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2021-11-17 02:30:58,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 02:30:59,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 18 proven. 147 refuted. 0 times theorem prover too weak. 1218 trivial. 0 not checked. [2021-11-17 02:30:59,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 02:30:59,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257163088] [2021-11-17 02:30:59,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257163088] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 02:30:59,254 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-17 02:30:59,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-17 02:30:59,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75133195] [2021-11-17 02:30:59,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-17 02:30:59,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 02:30:59,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 02:30:59,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 02:30:59,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-17 02:30:59,256 INFO L87 Difference]: Start difference. First operand 927 states and 1257 transitions. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-17 02:30:59,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:30:59,776 INFO L93 Difference]: Finished difference Result 1840 states and 2510 transitions. [2021-11-17 02:30:59,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 02:30:59,777 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 211 [2021-11-17 02:30:59,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:30:59,781 INFO L225 Difference]: With dead ends: 1840 [2021-11-17 02:30:59,781 INFO L226 Difference]: Without dead ends: 931 [2021-11-17 02:30:59,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=149, Unknown=0, NotChecked=0, Total=240 [2021-11-17 02:30:59,784 INFO L933 BasicCegarLoop]: 492 mSDtfsCounter, 28 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-17 02:30:59,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 1941 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-17 02:30:59,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2021-11-17 02:30:59,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 931. [2021-11-17 02:30:59,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 693 states have (on average 1.3376623376623376) internal successors, (927), 698 states have internal predecessors, (927), 167 states have call successors, (167), 71 states have call predecessors, (167), 70 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2021-11-17 02:30:59,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1259 transitions. [2021-11-17 02:30:59,837 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1259 transitions. Word has length 211 [2021-11-17 02:30:59,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:30:59,838 INFO L470 AbstractCegarLoop]: Abstraction has 931 states and 1259 transitions. [2021-11-17 02:30:59,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-17 02:30:59,838 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1259 transitions. [2021-11-17 02:30:59,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-17 02:30:59,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:30:59,841 INFO L514 BasicCegarLoop]: trace histogram [62, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:30:59,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-17 02:31:00,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 02:31:00,053 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:31:00,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:31:00,054 INFO L85 PathProgramCache]: Analyzing trace with hash -283422895, now seen corresponding path program 2 times [2021-11-17 02:31:00,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 02:31:00,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708101099] [2021-11-17 02:31:00,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-17 02:31:00,055 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 02:31:00,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 02:31:00,056 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 02:31:00,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-17 02:31:00,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-17 02:31:00,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-17 02:31:00,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 02:31:00,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:31:00,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3049 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3049 trivial. 0 not checked. [2021-11-17 02:31:00,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 02:31:01,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3049 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3049 trivial. 0 not checked. [2021-11-17 02:31:01,370 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 02:31:01,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708101099] [2021-11-17 02:31:01,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708101099] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-17 02:31:01,370 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:31:01,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-17 02:31:01,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385350540] [2021-11-17 02:31:01,371 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-17 02:31:01,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 02:31:01,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 02:31:01,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 02:31:01,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-17 02:31:01,374 INFO L87 Difference]: Start difference. First operand 931 states and 1259 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2021-11-17 02:31:01,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:31:01,450 INFO L93 Difference]: Finished difference Result 1797 states and 2437 transitions. [2021-11-17 02:31:01,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 02:31:01,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) Word has length 239 [2021-11-17 02:31:01,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:31:01,455 INFO L225 Difference]: With dead ends: 1797 [2021-11-17 02:31:01,455 INFO L226 Difference]: Without dead ends: 931 [2021-11-17 02:31:01,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-17 02:31:01,458 INFO L933 BasicCegarLoop]: 491 mSDtfsCounter, 437 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 02:31:01,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 491 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 02:31:01,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2021-11-17 02:31:01,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 931. [2021-11-17 02:31:01,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 693 states have (on average 1.3362193362193362) internal successors, (926), 698 states have internal predecessors, (926), 167 states have call successors, (167), 71 states have call predecessors, (167), 70 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2021-11-17 02:31:01,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1258 transitions. [2021-11-17 02:31:01,484 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1258 transitions. Word has length 239 [2021-11-17 02:31:01,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:31:01,485 INFO L470 AbstractCegarLoop]: Abstraction has 931 states and 1258 transitions. [2021-11-17 02:31:01,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2021-11-17 02:31:01,485 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1258 transitions. [2021-11-17 02:31:01,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-17 02:31:01,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:31:01,487 INFO L514 BasicCegarLoop]: trace histogram [62, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:31:01,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-17 02:31:01,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 02:31:01,700 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:31:01,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:31:01,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1972366637, now seen corresponding path program 1 times [2021-11-17 02:31:01,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 02:31:01,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558664556] [2021-11-17 02:31:01,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:31:01,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 02:31:01,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 02:31:01,702 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 02:31:01,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-17 02:31:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:31:02,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-17 02:31:02,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:31:02,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3049 backedges. 862 proven. 21 refuted. 0 times theorem prover too weak. 2166 trivial. 0 not checked. [2021-11-17 02:31:02,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 02:31:03,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3049 backedges. 38 proven. 485 refuted. 0 times theorem prover too weak. 2526 trivial. 0 not checked. [2021-11-17 02:31:03,868 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 02:31:03,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558664556] [2021-11-17 02:31:03,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558664556] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-17 02:31:03,868 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-17 02:31:03,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-17 02:31:03,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076306642] [2021-11-17 02:31:03,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-17 02:31:03,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-17 02:31:03,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 02:31:03,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-17 02:31:03,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-11-17 02:31:03,870 INFO L87 Difference]: Start difference. First operand 931 states and 1258 transitions. Second operand has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-17 02:31:04,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:31:04,589 INFO L93 Difference]: Finished difference Result 1856 states and 2534 transitions. [2021-11-17 02:31:04,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-17 02:31:04,590 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 239 [2021-11-17 02:31:04,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:31:04,594 INFO L225 Difference]: With dead ends: 1856 [2021-11-17 02:31:04,595 INFO L226 Difference]: Without dead ends: 941 [2021-11-17 02:31:04,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2021-11-17 02:31:04,598 INFO L933 BasicCegarLoop]: 495 mSDtfsCounter, 77 mSDsluCounter, 4345 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 4840 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-17 02:31:04,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 4840 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-17 02:31:04,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2021-11-17 02:31:04,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 935. [2021-11-17 02:31:04,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 697 states have (on average 1.3357245337159254) internal successors, (931), 702 states have internal predecessors, (931), 167 states have call successors, (167), 71 states have call predecessors, (167), 70 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2021-11-17 02:31:04,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1263 transitions. [2021-11-17 02:31:04,624 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1263 transitions. Word has length 239 [2021-11-17 02:31:04,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:31:04,625 INFO L470 AbstractCegarLoop]: Abstraction has 935 states and 1263 transitions. [2021-11-17 02:31:04,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-17 02:31:04,625 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1263 transitions. [2021-11-17 02:31:04,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-17 02:31:04,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:31:04,627 INFO L514 BasicCegarLoop]: trace histogram [76, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:31:04,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-17 02:31:04,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 02:31:04,840 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:31:04,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:31:04,840 INFO L85 PathProgramCache]: Analyzing trace with hash 733728179, now seen corresponding path program 2 times [2021-11-17 02:31:04,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 02:31:04,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656848801] [2021-11-17 02:31:04,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-17 02:31:04,841 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 02:31:04,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 02:31:04,843 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 02:31:04,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-17 02:31:05,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-17 02:31:05,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-17 02:31:05,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-17 02:31:05,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:31:05,401 INFO L134 CoverageAnalysis]: Checked inductivity of 4176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4176 trivial. 0 not checked. [2021-11-17 02:31:05,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 02:31:05,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4176 trivial. 0 not checked. [2021-11-17 02:31:05,707 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 02:31:05,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656848801] [2021-11-17 02:31:05,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656848801] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-17 02:31:05,707 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:31:05,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-17 02:31:05,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980560814] [2021-11-17 02:31:05,708 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-17 02:31:05,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-17 02:31:05,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 02:31:05,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-17 02:31:05,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-17 02:31:05,709 INFO L87 Difference]: Start difference. First operand 935 states and 1263 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-17 02:31:06,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:31:06,169 INFO L93 Difference]: Finished difference Result 1825 states and 2467 transitions. [2021-11-17 02:31:06,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-17 02:31:06,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 253 [2021-11-17 02:31:06,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:31:06,174 INFO L225 Difference]: With dead ends: 1825 [2021-11-17 02:31:06,174 INFO L226 Difference]: Without dead ends: 959 [2021-11-17 02:31:06,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-17 02:31:06,176 INFO L933 BasicCegarLoop]: 496 mSDtfsCounter, 35 mSDsluCounter, 2950 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3446 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-17 02:31:06,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 3446 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-17 02:31:06,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-11-17 02:31:06,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 940. [2021-11-17 02:31:06,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 701 states have (on average 1.332382310984308) internal successors, (934), 706 states have internal predecessors, (934), 168 states have call successors, (168), 71 states have call predecessors, (168), 70 states have return successors, (166), 166 states have call predecessors, (166), 166 states have call successors, (166) [2021-11-17 02:31:06,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1268 transitions. [2021-11-17 02:31:06,198 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1268 transitions. Word has length 253 [2021-11-17 02:31:06,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:31:06,199 INFO L470 AbstractCegarLoop]: Abstraction has 940 states and 1268 transitions. [2021-11-17 02:31:06,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-17 02:31:06,200 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1268 transitions. [2021-11-17 02:31:06,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-17 02:31:06,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:31:06,202 INFO L514 BasicCegarLoop]: trace histogram [76, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:31:06,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-17 02:31:06,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 02:31:06,417 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:31:06,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:31:06,417 INFO L85 PathProgramCache]: Analyzing trace with hash 790986481, now seen corresponding path program 1 times [2021-11-17 02:31:06,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 02:31:06,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968666401] [2021-11-17 02:31:06,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:31:06,419 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 02:31:06,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 02:31:06,420 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 02:31:06,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-17 02:31:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:31:09,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 02:31:09,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:31:10,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4176 trivial. 0 not checked. [2021-11-17 02:31:10,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 02:31:10,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4176 trivial. 0 not checked. [2021-11-17 02:31:10,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 02:31:10,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968666401] [2021-11-17 02:31:10,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968666401] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-17 02:31:10,716 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:31:10,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-17 02:31:10,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908000768] [2021-11-17 02:31:10,717 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-17 02:31:10,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 02:31:10,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 02:31:10,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 02:31:10,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 02:31:10,718 INFO L87 Difference]: Start difference. First operand 940 states and 1268 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-17 02:31:10,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:31:10,774 INFO L93 Difference]: Finished difference Result 2678 states and 3643 transitions. [2021-11-17 02:31:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 02:31:10,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 253 [2021-11-17 02:31:10,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:31:10,783 INFO L225 Difference]: With dead ends: 2678 [2021-11-17 02:31:10,783 INFO L226 Difference]: Without dead ends: 1785 [2021-11-17 02:31:10,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 02:31:10,787 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 402 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 02:31:10,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 998 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 02:31:10,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2021-11-17 02:31:10,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1780. [2021-11-17 02:31:10,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1780 states, 1333 states have (on average 1.3405851462865717) internal successors, (1787), 1341 states have internal predecessors, (1787), 312 states have call successors, (312), 135 states have call predecessors, (312), 134 states have return successors, (316), 310 states have call predecessors, (316), 310 states have call successors, (316) [2021-11-17 02:31:10,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 2415 transitions. [2021-11-17 02:31:10,840 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 2415 transitions. Word has length 253 [2021-11-17 02:31:10,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:31:10,840 INFO L470 AbstractCegarLoop]: Abstraction has 1780 states and 2415 transitions. [2021-11-17 02:31:10,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-17 02:31:10,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 2415 transitions. [2021-11-17 02:31:10,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-17 02:31:10,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:31:10,843 INFO L514 BasicCegarLoop]: trace histogram [76, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:31:10,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-17 02:31:11,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 02:31:11,067 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:31:11,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:31:11,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2052491495, now seen corresponding path program 1 times [2021-11-17 02:31:11,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 02:31:11,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380983157] [2021-11-17 02:31:11,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:31:11,069 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 02:31:11,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 02:31:11,070 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 02:31:11,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-17 02:31:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:31:14,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 02:31:14,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:31:15,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4176 trivial. 0 not checked. [2021-11-17 02:31:15,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 02:31:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4176 trivial. 0 not checked. [2021-11-17 02:31:15,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 02:31:15,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380983157] [2021-11-17 02:31:15,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380983157] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-17 02:31:15,508 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:31:15,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-17 02:31:15,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710315987] [2021-11-17 02:31:15,508 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-17 02:31:15,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 02:31:15,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 02:31:15,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 02:31:15,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 02:31:15,509 INFO L87 Difference]: Start difference. First operand 1780 states and 2415 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 02:31:15,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:31:15,661 INFO L93 Difference]: Finished difference Result 3746 states and 5033 transitions. [2021-11-17 02:31:15,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 02:31:15,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 276 [2021-11-17 02:31:15,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:31:15,669 INFO L225 Difference]: With dead ends: 3746 [2021-11-17 02:31:15,670 INFO L226 Difference]: Without dead ends: 2035 [2021-11-17 02:31:15,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 02:31:15,674 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 285 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-17 02:31:15,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 960 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-17 02:31:15,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2021-11-17 02:31:15,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2006. [2021-11-17 02:31:15,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2006 states, 1495 states have (on average 1.3264214046822742) internal successors, (1983), 1504 states have internal predecessors, (1983), 342 states have call successors, (342), 169 states have call predecessors, (342), 168 states have return successors, (344), 337 states have call predecessors, (344), 340 states have call successors, (344) [2021-11-17 02:31:15,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 2669 transitions. [2021-11-17 02:31:15,729 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 2669 transitions. Word has length 276 [2021-11-17 02:31:15,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:31:15,729 INFO L470 AbstractCegarLoop]: Abstraction has 2006 states and 2669 transitions. [2021-11-17 02:31:15,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 02:31:15,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 2669 transitions. [2021-11-17 02:31:15,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2021-11-17 02:31:15,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:31:15,733 INFO L514 BasicCegarLoop]: trace histogram [76, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:31:15,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-17 02:31:15,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 02:31:15,947 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:31:15,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:31:15,948 INFO L85 PathProgramCache]: Analyzing trace with hash 805087786, now seen corresponding path program 1 times [2021-11-17 02:31:15,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 02:31:15,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534581412] [2021-11-17 02:31:15,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:31:15,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 02:31:15,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 02:31:15,950 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 02:31:15,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-17 02:31:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:31:19,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-17 02:31:19,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:31:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4308 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 4190 trivial. 0 not checked. [2021-11-17 02:31:20,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 02:31:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4308 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4304 trivial. 0 not checked. [2021-11-17 02:31:20,849 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 02:31:20,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534581412] [2021-11-17 02:31:20,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534581412] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-17 02:31:20,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-17 02:31:20,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-11-17 02:31:20,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757619296] [2021-11-17 02:31:20,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 02:31:20,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 02:31:20,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 02:31:20,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 02:31:20,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-17 02:31:20,850 INFO L87 Difference]: Start difference. First operand 2006 states and 2669 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-17 02:31:21,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:31:21,411 INFO L93 Difference]: Finished difference Result 3901 states and 5177 transitions. [2021-11-17 02:31:21,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 02:31:21,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 353 [2021-11-17 02:31:21,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:31:21,419 INFO L225 Difference]: With dead ends: 3901 [2021-11-17 02:31:21,419 INFO L226 Difference]: Without dead ends: 2072 [2021-11-17 02:31:21,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 696 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-11-17 02:31:21,423 INFO L933 BasicCegarLoop]: 520 mSDtfsCounter, 266 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 2508 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-17 02:31:21,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 2508 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-17 02:31:21,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2021-11-17 02:31:21,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 1909. [2021-11-17 02:31:21,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1417 states have (on average 1.3196894848270995) internal successors, (1870), 1430 states have internal predecessors, (1870), 326 states have call successors, (326), 162 states have call predecessors, (326), 165 states have return successors, (333), 321 states have call predecessors, (333), 324 states have call successors, (333) [2021-11-17 02:31:21,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 2529 transitions. [2021-11-17 02:31:21,467 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 2529 transitions. Word has length 353 [2021-11-17 02:31:21,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:31:21,468 INFO L470 AbstractCegarLoop]: Abstraction has 1909 states and 2529 transitions. [2021-11-17 02:31:21,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-17 02:31:21,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 2529 transitions. [2021-11-17 02:31:21,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-11-17 02:31:21,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:31:21,471 INFO L514 BasicCegarLoop]: trace histogram [76, 12, 12, 12, 12, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:31:21,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-17 02:31:21,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 02:31:21,692 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:31:21,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:31:21,693 INFO L85 PathProgramCache]: Analyzing trace with hash -972312987, now seen corresponding path program 1 times [2021-11-17 02:31:21,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 02:31:21,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157935614] [2021-11-17 02:31:21,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:31:21,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 02:31:21,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 02:31:21,701 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 02:31:21,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-17 02:31:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:31:25,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 02:31:25,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:31:26,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4368 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 4226 trivial. 0 not checked. [2021-11-17 02:31:26,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-17 02:31:26,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4368 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4366 trivial. 0 not checked. [2021-11-17 02:31:26,670 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-17 02:31:26,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157935614] [2021-11-17 02:31:26,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157935614] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-17 02:31:26,670 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-17 02:31:26,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-17 02:31:26,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509635485] [2021-11-17 02:31:26,670 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-17 02:31:26,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 02:31:26,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-17 02:31:26,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 02:31:26,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-17 02:31:26,671 INFO L87 Difference]: Start difference. First operand 1909 states and 2529 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 4 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) [2021-11-17 02:31:27,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 02:31:27,112 INFO L93 Difference]: Finished difference Result 4953 states and 6584 transitions. [2021-11-17 02:31:27,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 02:31:27,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 4 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) Word has length 373 [2021-11-17 02:31:27,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 02:31:27,123 INFO L225 Difference]: With dead ends: 4953 [2021-11-17 02:31:27,124 INFO L226 Difference]: Without dead ends: 3253 [2021-11-17 02:31:27,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 742 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-17 02:31:27,129 INFO L933 BasicCegarLoop]: 748 mSDtfsCounter, 509 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-17 02:31:27,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 1532 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-17 02:31:27,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3253 states. [2021-11-17 02:31:27,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3253 to 3085. [2021-11-17 02:31:27,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3085 states, 2329 states have (on average 1.3361957921854872) internal successors, (3112), 2342 states have internal predecessors, (3112), 494 states have call successors, (494), 258 states have call predecessors, (494), 261 states have return successors, (501), 489 states have call predecessors, (501), 492 states have call successors, (501) [2021-11-17 02:31:27,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3085 states to 3085 states and 4107 transitions. [2021-11-17 02:31:27,238 INFO L78 Accepts]: Start accepts. Automaton has 3085 states and 4107 transitions. Word has length 373 [2021-11-17 02:31:27,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 02:31:27,238 INFO L470 AbstractCegarLoop]: Abstraction has 3085 states and 4107 transitions. [2021-11-17 02:31:27,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 4 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) [2021-11-17 02:31:27,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3085 states and 4107 transitions. [2021-11-17 02:31:27,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-17 02:31:27,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 02:31:27,243 INFO L514 BasicCegarLoop]: trace histogram [76, 12, 12, 12, 12, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 02:31:27,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-17 02:31:27,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-17 02:31:27,456 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 02:31:27,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 02:31:27,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1878997718, now seen corresponding path program 1 times [2021-11-17 02:31:27,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-17 02:31:27,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628294050] [2021-11-17 02:31:27,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 02:31:27,457 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-17 02:31:27,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-17 02:31:27,458 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-17 02:31:27,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-17 02:31:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 02:31:44,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 1708 conjuncts, 191 conjunts are in the unsatisfiable core [2021-11-17 02:31:44,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 02:31:44,373 INFO L354 Elim1Store]: treesize reduction 440, result has 0.2 percent of original size [2021-11-17 02:31:44,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 359 treesize of output 337 Killed by 15