./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y --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 fe313da0c6b218ced50e4197dc755b81036d59e37c56d6141b10ae8e848ca9fd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:28:59,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:28:59,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:29:00,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:29:00,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:29:00,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:29:00,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:29:00,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:29:00,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:29:00,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:29:00,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:29:00,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:29:00,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:29:00,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:29:00,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:29:00,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:29:00,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:29:00,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:29:00,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:29:00,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:29:00,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:29:00,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:29:00,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:29:00,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:29:00,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:29:00,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:29:00,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:29:00,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:29:00,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:29:00,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:29:00,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:29:00,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:29:00,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:29:00,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:29:00,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:29:00,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:29:00,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:29:00,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:29:00,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:29:00,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:29:00,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:29:00,102 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 18:29:00,152 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:29:00,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:29:00,153 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:29:00,154 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:29:00,161 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:29:00,162 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:29:00,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:29:00,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:29:00,164 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:29:00,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:29:00,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:29:00,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:29:00,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:29:00,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:29:00,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:29:00,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:29:00,167 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:29:00,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:29:00,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:29:00,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:29:00,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:29:00,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:29:00,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:29:00,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:29:00,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:29:00,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:29:00,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:29:00,170 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:29:00,170 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:29:00,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:29:00,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:29:00,173 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe313da0c6b218ced50e4197dc755b81036d59e37c56d6141b10ae8e848ca9fd [2021-11-13 18:29:00,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:29:00,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:29:00,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:29:00,491 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:29:00,493 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:29:00,495 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i [2021-11-13 18:29:00,614 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/data/f5d24616c/442bd0b6071c4b9085dabc7645fe94f1/FLAG6c5b5651c [2021-11-13 18:29:01,668 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:29:01,669 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i [2021-11-13 18:29:01,746 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/data/f5d24616c/442bd0b6071c4b9085dabc7645fe94f1/FLAG6c5b5651c [2021-11-13 18:29:01,977 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/data/f5d24616c/442bd0b6071c4b9085dabc7645fe94f1 [2021-11-13 18:29:01,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:29:01,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:29:01,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:29:01,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:29:02,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:29:02,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:29:01" (1/1) ... [2021-11-13 18:29:02,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@304d81c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:02, skipping insertion in model container [2021-11-13 18:29:02,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:29:01" (1/1) ... [2021-11-13 18:29:02,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:29:02,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:29:03,014 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5693] [2021-11-13 18:29:03,015 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5694-5695] [2021-11-13 18:29:03,744 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i[183417,183430] [2021-11-13 18:29:05,885 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-13 18:29:05,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:29:06,024 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:29:06,173 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5693] [2021-11-13 18:29:06,175 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5694-5695] [2021-11-13 18:29:06,204 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i[183417,183430] [2021-11-13 18:29:06,844 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-13 18:29:06,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:29:07,118 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:29:07,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:07 WrapperNode [2021-11-13 18:29:07,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:29:07,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:29:07,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:29:07,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:29:07,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:07" (1/1) ... [2021-11-13 18:29:07,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:07" (1/1) ... [2021-11-13 18:29:07,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:29:07,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:29:07,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:29:07,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:29:07,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:07" (1/1) ... [2021-11-13 18:29:07,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:07" (1/1) ... [2021-11-13 18:29:07,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:07" (1/1) ... [2021-11-13 18:29:07,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:07" (1/1) ... [2021-11-13 18:29:08,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:07" (1/1) ... [2021-11-13 18:29:08,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:07" (1/1) ... [2021-11-13 18:29:08,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:07" (1/1) ... [2021-11-13 18:29:08,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:29:08,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:29:08,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:29:08,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:29:08,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:07" (1/1) ... [2021-11-13 18:29:08,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:29:08,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:29:08,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:29:08,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:29:08,343 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-13 18:29:08,343 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-13 18:29:08,343 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-13 18:29:08,344 INFO L130 BoogieDeclarations]: Found specification of procedure unix_gc [2021-11-13 18:29:08,344 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_gc [2021-11-13 18:29:08,344 INFO L130 BoogieDeclarations]: Found specification of procedure unix_sysctl_unregister [2021-11-13 18:29:08,344 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_sysctl_unregister [2021-11-13 18:29:08,344 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-13 18:29:08,344 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-13 18:29:08,345 INFO L130 BoogieDeclarations]: Found specification of procedure seq_putc [2021-11-13 18:29:08,345 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_putc [2021-11-13 18:29:08,345 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-13 18:29:08,346 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-13 18:29:08,346 INFO L130 BoogieDeclarations]: Found specification of procedure sock_sndtimeo [2021-11-13 18:29:08,346 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_sndtimeo [2021-11-13 18:29:08,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-13 18:29:08,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-13 18:29:08,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:29:08,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:29:08,347 INFO L130 BoogieDeclarations]: Found specification of procedure unix_release_addr [2021-11-13 18:29:08,347 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_release_addr [2021-11-13 18:29:08,347 INFO L130 BoogieDeclarations]: Found specification of procedure unix_state_double_lock [2021-11-13 18:29:08,347 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_state_double_lock [2021-11-13 18:29:08,348 INFO L130 BoogieDeclarations]: Found specification of procedure unix_set_peek_off [2021-11-13 18:29:08,348 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_set_peek_off [2021-11-13 18:29:08,348 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-13 18:29:08,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-13 18:29:08,348 INFO L130 BoogieDeclarations]: Found specification of procedure unix_dgram_disconnected [2021-11-13 18:29:08,349 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_dgram_disconnected [2021-11-13 18:29:08,349 INFO L130 BoogieDeclarations]: Found specification of procedure __clear_bit [2021-11-13 18:29:08,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __clear_bit [2021-11-13 18:29:08,349 INFO L130 BoogieDeclarations]: Found specification of procedure scm_destroy [2021-11-13 18:29:08,349 INFO L138 BoogieDeclarations]: Found implementation of procedure scm_destroy [2021-11-13 18:29:08,349 INFO L130 BoogieDeclarations]: Found specification of procedure put_cmsg [2021-11-13 18:29:08,350 INFO L138 BoogieDeclarations]: Found implementation of procedure put_cmsg [2021-11-13 18:29:08,350 INFO L130 BoogieDeclarations]: Found specification of procedure unix_create1 [2021-11-13 18:29:08,350 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_create1 [2021-11-13 18:29:08,351 INFO L130 BoogieDeclarations]: Found specification of procedure unix_dgram_poll [2021-11-13 18:29:08,351 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_dgram_poll [2021-11-13 18:29:08,351 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 18:29:08,351 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 18:29:08,351 INFO L130 BoogieDeclarations]: Found specification of procedure skb_peek [2021-11-13 18:29:08,352 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_peek [2021-11-13 18:29:08,352 INFO L130 BoogieDeclarations]: Found specification of procedure unix_recvq_full [2021-11-13 18:29:08,352 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_recvq_full [2021-11-13 18:29:08,352 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2021-11-13 18:29:08,353 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2021-11-13 18:29:08,353 INFO L130 BoogieDeclarations]: Found specification of procedure unix_shutdown [2021-11-13 18:29:08,353 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_shutdown [2021-11-13 18:29:08,354 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 18:29:08,354 INFO L130 BoogieDeclarations]: Found specification of procedure scan_children [2021-11-13 18:29:08,354 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_children [2021-11-13 18:29:08,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-13 18:29:08,356 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-11-13 18:29:08,356 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-11-13 18:29:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure sk_peek_offset_fwd [2021-11-13 18:29:08,357 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_peek_offset_fwd [2021-11-13 18:29:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-13 18:29:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:29:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure unix_find_other [2021-11-13 18:29:08,358 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_find_other [2021-11-13 18:29:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure unix_scm_to_skb [2021-11-13 18:29:08,359 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_scm_to_skb [2021-11-13 18:29:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure scm_send [2021-11-13 18:29:08,359 INFO L138 BoogieDeclarations]: Found implementation of procedure scm_send [2021-11-13 18:29:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure sk_set_socket [2021-11-13 18:29:08,359 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_set_socket [2021-11-13 18:29:08,360 INFO L130 BoogieDeclarations]: Found specification of procedure unix_autobind [2021-11-13 18:29:08,361 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_autobind [2021-11-13 18:29:08,361 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-13 18:29:08,361 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-13 18:29:08,361 INFO L130 BoogieDeclarations]: Found specification of procedure unix_release_sock [2021-11-13 18:29:08,361 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_release_sock [2021-11-13 18:29:08,361 INFO L130 BoogieDeclarations]: Found specification of procedure sock_put [2021-11-13 18:29:08,362 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_put [2021-11-13 18:29:08,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 18:29:08,362 INFO L130 BoogieDeclarations]: Found specification of procedure unix_mkname [2021-11-13 18:29:08,362 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_mkname [2021-11-13 18:29:08,362 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-13 18:29:08,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-13 18:29:08,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 18:29:08,363 INFO L130 BoogieDeclarations]: Found specification of procedure sock_intr_errno [2021-11-13 18:29:08,363 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_intr_errno [2021-11-13 18:29:08,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:29:08,364 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_long_inc [2021-11-13 18:29:08,364 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_long_inc [2021-11-13 18:29:08,364 INFO L130 BoogieDeclarations]: Found specification of procedure unix_may_send [2021-11-13 18:29:08,365 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_may_send [2021-11-13 18:29:08,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 18:29:08,365 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 18:29:08,365 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2021-11-13 18:29:08,366 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2021-11-13 18:29:08,367 INFO L130 BoogieDeclarations]: Found specification of procedure __validate_creds [2021-11-13 18:29:08,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __validate_creds [2021-11-13 18:29:08,367 INFO L130 BoogieDeclarations]: Found specification of procedure unix_listen [2021-11-13 18:29:08,367 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_listen [2021-11-13 18:29:08,367 INFO L130 BoogieDeclarations]: Found specification of procedure sk_sleep [2021-11-13 18:29:08,367 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_sleep [2021-11-13 18:29:08,368 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-13 18:29:08,368 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-13 18:29:08,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-13 18:29:08,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-13 18:29:08,368 INFO L130 BoogieDeclarations]: Found specification of procedure seq_file_net [2021-11-13 18:29:08,368 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_file_net [2021-11-13 18:29:08,369 INFO L130 BoogieDeclarations]: Found specification of procedure kiocb_to_siocb [2021-11-13 18:29:08,369 INFO L138 BoogieDeclarations]: Found implementation of procedure kiocb_to_siocb [2021-11-13 18:29:08,369 INFO L130 BoogieDeclarations]: Found specification of procedure init_peercred [2021-11-13 18:29:08,369 INFO L138 BoogieDeclarations]: Found implementation of procedure init_peercred [2021-11-13 18:29:08,370 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-13 18:29:08,370 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-13 18:29:08,370 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2021-11-13 18:29:08,370 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2021-11-13 18:29:08,371 INFO L130 BoogieDeclarations]: Found specification of procedure unix_dgram_sendmsg [2021-11-13 18:29:08,372 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_dgram_sendmsg [2021-11-13 18:29:08,374 INFO L130 BoogieDeclarations]: Found specification of procedure unix_stream_connect [2021-11-13 18:29:08,375 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_stream_connect [2021-11-13 18:29:08,375 INFO L130 BoogieDeclarations]: Found specification of procedure get_cred [2021-11-13 18:29:08,376 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cred [2021-11-13 18:29:08,376 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_long_dec [2021-11-13 18:29:08,377 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_long_dec [2021-11-13 18:29:08,377 INFO L130 BoogieDeclarations]: Found specification of procedure unix_skb_len [2021-11-13 18:29:08,377 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_skb_len [2021-11-13 18:29:08,378 INFO L130 BoogieDeclarations]: Found specification of procedure sock_flag [2021-11-13 18:29:08,384 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_flag [2021-11-13 18:29:08,384 INFO L130 BoogieDeclarations]: Found specification of procedure unix_state_double_unlock [2021-11-13 18:29:08,384 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_state_double_unlock [2021-11-13 18:29:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:29:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-13 18:29:08,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-13 18:29:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:29:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-13 18:29:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:29:08,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:29:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure unix_net_exit [2021-11-13 18:29:08,386 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_net_exit [2021-11-13 18:29:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure unix_detach_fds [2021-11-13 18:29:08,386 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_detach_fds [2021-11-13 18:29:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure touch_atime [2021-11-13 18:29:08,387 INFO L138 BoogieDeclarations]: Found implementation of procedure touch_atime [2021-11-13 18:29:08,387 INFO L130 BoogieDeclarations]: Found specification of procedure unix_seq_stop [2021-11-13 18:29:08,387 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_seq_stop [2021-11-13 18:29:08,387 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-13 18:29:08,387 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-13 18:29:08,387 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-11-13 18:29:08,387 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-11-13 18:29:08,388 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_datagram_iovec [2021-11-13 18:29:08,388 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_datagram_iovec [2021-11-13 18:29:08,388 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-13 18:29:08,388 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-13 18:29:08,388 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-13 18:29:08,388 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-13 18:29:08,388 INFO L130 BoogieDeclarations]: Found specification of procedure unix_accept [2021-11-13 18:29:08,389 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_accept [2021-11-13 18:29:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure unix_dgram_recvmsg [2021-11-13 18:29:08,389 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_dgram_recvmsg [2021-11-13 18:29:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-13 18:29:08,389 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-13 18:29:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-11-13 18:29:08,390 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-11-13 18:29:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure unix_wait_for_peer [2021-11-13 18:29:08,390 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_wait_for_peer [2021-11-13 18:29:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure unix_hash_fold [2021-11-13 18:29:08,390 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_hash_fold [2021-11-13 18:29:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure scan_inflight [2021-11-13 18:29:08,390 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_inflight [2021-11-13 18:29:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-13 18:29:08,391 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-13 18:29:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:29:08,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:29:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-13 18:29:08,391 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-13 18:29:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2021-11-13 18:29:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2021-11-13 18:29:08,392 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_bh [2021-11-13 18:29:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_bh [2021-11-13 18:29:08,392 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_bh [2021-11-13 18:29:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_bh [2021-11-13 18:29:08,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 18:29:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 18:29:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 18:29:08,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 18:29:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_unlink [2021-11-13 18:29:08,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_unlink [2021-11-13 18:29:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-13 18:29:08,394 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-13 18:29:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure unix_peer_get [2021-11-13 18:29:08,395 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_peer_get [2021-11-13 18:29:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure unix_bind [2021-11-13 18:29:08,395 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_bind [2021-11-13 18:29:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure sock_hold [2021-11-13 18:29:08,395 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_hold [2021-11-13 18:29:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure unix_copy_addr [2021-11-13 18:29:08,395 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_copy_addr [2021-11-13 18:29:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-11-13 18:29:08,396 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-11-13 18:29:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-13 18:29:08,396 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-13 18:29:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-13 18:29:08,396 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-13 18:29:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 18:29:08,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 18:29:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure sock_poll_wait [2021-11-13 18:29:08,397 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_poll_wait [2021-11-13 18:29:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure __unix_find_socket_byname [2021-11-13 18:29:08,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __unix_find_socket_byname [2021-11-13 18:29:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure sock_net [2021-11-13 18:29:08,397 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_net [2021-11-13 18:29:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-13 18:29:08,398 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-13 18:29:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 18:29:08,398 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 18:29:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure scm_recv [2021-11-13 18:29:08,398 INFO L138 BoogieDeclarations]: Found implementation of procedure scm_recv [2021-11-13 18:29:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure unix_release [2021-11-13 18:29:08,399 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_release [2021-11-13 18:29:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 18:29:08,399 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 18:29:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure path_put [2021-11-13 18:29:08,399 INFO L138 BoogieDeclarations]: Found implementation of procedure path_put [2021-11-13 18:29:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure sock_no_getsockopt [2021-11-13 18:29:08,400 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_no_getsockopt [2021-11-13 18:29:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure sock_alloc_send_pskb [2021-11-13 18:29:08,400 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_alloc_send_pskb [2021-11-13 18:29:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:29:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure sk_peek_offset [2021-11-13 18:29:08,400 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_peek_offset [2021-11-13 18:29:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-13 18:29:08,401 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-13 18:29:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure unix_get_socket [2021-11-13 18:29:08,401 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_get_socket [2021-11-13 18:29:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:29:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure sk_unhashed [2021-11-13 18:29:08,401 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_unhashed [2021-11-13 18:29:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2021-11-13 18:29:08,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2021-11-13 18:29:08,402 INFO L130 BoogieDeclarations]: Found specification of procedure get_pid [2021-11-13 18:29:08,402 INFO L138 BoogieDeclarations]: Found implementation of procedure get_pid [2021-11-13 18:29:08,402 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2021-11-13 18:29:08,402 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2021-11-13 18:29:08,402 INFO L130 BoogieDeclarations]: Found specification of procedure scm_set_cred [2021-11-13 18:29:08,404 INFO L138 BoogieDeclarations]: Found implementation of procedure scm_set_cred [2021-11-13 18:29:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2021-11-13 18:29:08,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2021-11-13 18:29:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-11-13 18:29:08,408 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-11-13 18:29:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure local_bh_disable [2021-11-13 18:29:08,409 INFO L138 BoogieDeclarations]: Found implementation of procedure local_bh_disable [2021-11-13 18:29:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure sk_wake_async [2021-11-13 18:29:08,409 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_wake_async [2021-11-13 18:29:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:29:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-13 18:29:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-13 18:29:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure maybe_add_creds [2021-11-13 18:29:08,413 INFO L138 BoogieDeclarations]: Found implementation of procedure maybe_add_creds [2021-11-13 18:29:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-13 18:29:08,413 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-13 18:29:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure skb_free_datagram [2021-11-13 18:29:08,413 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_free_datagram [2021-11-13 18:29:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-13 18:29:08,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-13 18:29:08,414 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_datagram_from_iovec [2021-11-13 18:29:08,414 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_datagram_from_iovec [2021-11-13 18:29:08,414 INFO L130 BoogieDeclarations]: Found specification of procedure sock_prot_inuse_add [2021-11-13 18:29:08,414 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_prot_inuse_add [2021-11-13 18:29:08,414 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-13 18:29:08,415 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-13 18:29:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure sk_next [2021-11-13 18:29:08,415 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_next [2021-11-13 18:29:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure __unix_insert_socket [2021-11-13 18:29:08,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __unix_insert_socket [2021-11-13 18:29:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure sock_error [2021-11-13 18:29:08,415 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_error [2021-11-13 18:29:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure __unix_remove_socket [2021-11-13 18:29:08,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __unix_remove_socket [2021-11-13 18:29:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure csum_partial [2021-11-13 18:29:08,416 INFO L138 BoogieDeclarations]: Found implementation of procedure csum_partial [2021-11-13 18:29:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-13 18:29:08,416 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-13 18:29:08,417 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-11-13 18:29:08,417 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-11-13 18:29:08,417 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 18:29:08,417 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 18:29:08,417 INFO L130 BoogieDeclarations]: Found specification of procedure scm_fp_dup [2021-11-13 18:29:08,417 INFO L138 BoogieDeclarations]: Found implementation of procedure scm_fp_dup [2021-11-13 18:29:08,417 INFO L130 BoogieDeclarations]: Found specification of procedure security_unix_may_send [2021-11-13 18:29:08,418 INFO L138 BoogieDeclarations]: Found implementation of procedure security_unix_may_send [2021-11-13 18:29:08,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:29:08,418 INFO L130 BoogieDeclarations]: Found specification of procedure sock_no_mmap [2021-11-13 18:29:08,418 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_no_mmap [2021-11-13 18:29:08,418 INFO L130 BoogieDeclarations]: Found specification of procedure scm_destroy_cred [2021-11-13 18:29:08,418 INFO L138 BoogieDeclarations]: Found implementation of procedure scm_destroy_cred [2021-11-13 18:29:08,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 18:29:08,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 18:29:08,419 INFO L130 BoogieDeclarations]: Found specification of procedure put_cred [2021-11-13 18:29:08,419 INFO L138 BoogieDeclarations]: Found implementation of procedure put_cred [2021-11-13 18:29:08,419 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up_sync_key [2021-11-13 18:29:08,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up_sync_key [2021-11-13 18:29:08,419 INFO L130 BoogieDeclarations]: Found specification of procedure __kgid_val [2021-11-13 18:29:08,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __kgid_val [2021-11-13 18:29:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure task_tgid [2021-11-13 18:29:08,420 INFO L138 BoogieDeclarations]: Found implementation of procedure task_tgid [2021-11-13 18:29:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-13 18:29:08,420 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-13 18:29:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-13 18:29:08,421 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-13 18:29:08,421 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_unix_gc [2021-11-13 18:29:08,421 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_unix_gc [2021-11-13 18:29:08,421 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit [2021-11-13 18:29:08,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit [2021-11-13 18:29:08,421 INFO L130 BoogieDeclarations]: Found specification of procedure unix_next_socket [2021-11-13 18:29:08,421 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_next_socket [2021-11-13 18:29:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure sock_no_setsockopt [2021-11-13 18:29:08,422 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_no_setsockopt [2021-11-13 18:29:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure sk_peek_offset_bwd [2021-11-13 18:29:08,422 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_peek_offset_bwd [2021-11-13 18:29:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-13 18:29:08,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-13 18:29:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure unix_writable [2021-11-13 18:29:08,423 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_writable [2021-11-13 18:29:08,423 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_long_read [2021-11-13 18:29:08,423 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_long_read [2021-11-13 18:29:08,423 INFO L130 BoogieDeclarations]: Found specification of procedure unix_socketpair [2021-11-13 18:29:08,423 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_socketpair [2021-11-13 18:29:08,423 INFO L130 BoogieDeclarations]: Found specification of procedure sock_no_sendpage [2021-11-13 18:29:08,423 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_no_sendpage [2021-11-13 18:29:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-13 18:29:08,424 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-13 18:29:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure unix_getname [2021-11-13 18:29:08,424 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_getname [2021-11-13 18:29:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure unix_ioctl [2021-11-13 18:29:08,424 INFO L138 BoogieDeclarations]: Found implementation of procedure unix_ioctl [2021-11-13 18:29:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:29:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure local_bh_enable [2021-11-13 18:29:08,425 INFO L138 BoogieDeclarations]: Found implementation of procedure local_bh_enable [2021-11-13 18:29:10,007 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 18:29:20,240 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:29:20,241 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:29:20,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:29:20 BoogieIcfgContainer [2021-11-13 18:29:20,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:29:20,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:29:20,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:29:20,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:29:20,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:29:01" (1/3) ... [2021-11-13 18:29:20,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161e7c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:29:20, skipping insertion in model container [2021-11-13 18:29:20,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:07" (2/3) ... [2021-11-13 18:29:20,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161e7c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:29:20, skipping insertion in model container [2021-11-13 18:29:20,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:29:20" (3/3) ... [2021-11-13 18:29:20,259 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--unix--unix.ko-entry_point.cil.out.i [2021-11-13 18:29:20,266 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:29:20,266 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:29:20,351 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:29:20,361 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 [2021-11-13 18:29:20,361 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:29:20,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 2739 states, 1884 states have (on average 1.3540339702760085) internal successors, (2551), 1986 states have internal predecessors, (2551), 697 states have call successors, (697), 157 states have call predecessors, (697), 156 states have return successors, (688), 672 states have call predecessors, (688), 688 states have call successors, (688) [2021-11-13 18:29:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-13 18:29:20,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:20,520 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 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] [2021-11-13 18:29:20,521 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:29:20,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:20,527 INFO L85 PathProgramCache]: Analyzing trace with hash 517155252, now seen corresponding path program 1 times [2021-11-13 18:29:20,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:20,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32465653] [2021-11-13 18:29:20,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:20,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:21,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:21,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:29:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:21,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:29:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:21,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:29:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:21,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:29:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:21,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:29:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:21,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:29:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:21,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:29:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:21,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:29:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:21,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-13 18:29:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:21,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:29:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:21,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-13 18:29:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:21,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 18:29:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:21,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 18:29:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:21,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 18:29:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:21,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 18:29:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:21,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:29:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:21,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-13 18:29:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:22,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:29:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:22,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:29:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:22,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 18:29:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:22,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-13 18:29:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:22,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-13 18:29:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:22,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-13 18:29:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:22,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 18:29:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:22,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 18:29:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:22,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 18:29:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:22,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-13 18:29:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:22,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-11-13 18:29:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:22,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-13 18:29:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:22,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-13 18:29:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:22,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1516 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1516 trivial. 0 not checked. [2021-11-13 18:29:22,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:22,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32465653] [2021-11-13 18:29:22,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32465653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:22,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:22,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:29:22,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175681370] [2021-11-13 18:29:22,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:22,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:29:22,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:22,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:29:22,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:29:22,316 INFO L87 Difference]: Start difference. First operand has 2739 states, 1884 states have (on average 1.3540339702760085) internal successors, (2551), 1986 states have internal predecessors, (2551), 697 states have call successors, (697), 157 states have call predecessors, (697), 156 states have return successors, (688), 672 states have call predecessors, (688), 688 states have call successors, (688) Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-13 18:29:24,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:33,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:33,778 INFO L93 Difference]: Finished difference Result 8005 states and 11723 transitions. [2021-11-13 18:29:33,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:29:33,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 214 [2021-11-13 18:29:33,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:33,864 INFO L225 Difference]: With dead ends: 8005 [2021-11-13 18:29:33,864 INFO L226 Difference]: Without dead ends: 5218 [2021-11-13 18:29:33,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:29:33,896 INFO L933 BasicCegarLoop]: 4142 mSDtfsCounter, 4495 mSDsluCounter, 4460 mSDsCounter, 0 mSdLazyCounter, 2600 mSolverCounterSat, 1780 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9120.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5017 SdHoareTripleChecker+Valid, 8602 SdHoareTripleChecker+Invalid, 4381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 136.78ms SdHoareTripleChecker+Time, 1780 IncrementalHoareTripleChecker+Valid, 2600 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10547.03ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:33,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5017 Valid, 8602 Invalid, 4381 Unknown, 0 Unchecked, 136.78ms Time], IncrementalHoareTripleChecker [1780 Valid, 2600 Invalid, 1 Unknown, 0 Unchecked, 10547.03ms Time] [2021-11-13 18:29:33,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5218 states. [2021-11-13 18:29:34,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5218 to 4981. [2021-11-13 18:29:34,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4981 states, 3434 states have (on average 1.3444962143273151) internal successors, (4617), 3611 states have internal predecessors, (4617), 1238 states have call successors, (1238), 309 states have call predecessors, (1238), 308 states have return successors, (1237), 1206 states have call predecessors, (1237), 1237 states have call successors, (1237) [2021-11-13 18:29:34,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4981 states to 4981 states and 7092 transitions. [2021-11-13 18:29:34,381 INFO L78 Accepts]: Start accepts. Automaton has 4981 states and 7092 transitions. Word has length 214 [2021-11-13 18:29:34,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:34,383 INFO L470 AbstractCegarLoop]: Abstraction has 4981 states and 7092 transitions. [2021-11-13 18:29:34,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-13 18:29:34,384 INFO L276 IsEmpty]: Start isEmpty. Operand 4981 states and 7092 transitions. [2021-11-13 18:29:34,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-13 18:29:34,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:34,397 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:29:34,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:29:34,397 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:29:34,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:34,398 INFO L85 PathProgramCache]: Analyzing trace with hash 2586623, now seen corresponding path program 1 times [2021-11-13 18:29:34,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:34,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734049725] [2021-11-13 18:29:34,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:34,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:29:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:29:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:29:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:29:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:29:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:29:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:29:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:29:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-13 18:29:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:29:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-13 18:29:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 18:29:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 18:29:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 18:29:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 18:29:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:29:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-13 18:29:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:29:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:29:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 18:29:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:34,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-13 18:29:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:35,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-13 18:29:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:35,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-13 18:29:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:35,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 18:29:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:35,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 18:29:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:35,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 18:29:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:35,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-13 18:29:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:35,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-11-13 18:29:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:35,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-13 18:29:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:35,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-13 18:29:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1516 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1516 trivial. 0 not checked. [2021-11-13 18:29:35,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:35,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734049725] [2021-11-13 18:29:35,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734049725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:35,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:35,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:29:35,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388790439] [2021-11-13 18:29:35,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:35,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:29:35,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:35,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:29:35,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:29:35,166 INFO L87 Difference]: Start difference. First operand 4981 states and 7092 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-13 18:29:37,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:47,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:47,563 INFO L93 Difference]: Finished difference Result 15018 states and 21515 transitions. [2021-11-13 18:29:47,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:29:47,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 213 [2021-11-13 18:29:47,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:47,687 INFO L225 Difference]: With dead ends: 15018 [2021-11-13 18:29:47,688 INFO L226 Difference]: Without dead ends: 10096 [2021-11-13 18:29:47,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:29:47,733 INFO L933 BasicCegarLoop]: 4541 mSDtfsCounter, 4776 mSDsluCounter, 4642 mSDsCounter, 0 mSdLazyCounter, 2693 mSolverCounterSat, 1721 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10223.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5356 SdHoareTripleChecker+Valid, 9183 SdHoareTripleChecker+Invalid, 4415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 111.67ms SdHoareTripleChecker+Time, 1721 IncrementalHoareTripleChecker+Valid, 2693 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11506.42ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:47,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5356 Valid, 9183 Invalid, 4415 Unknown, 0 Unchecked, 111.67ms Time], IncrementalHoareTripleChecker [1721 Valid, 2693 Invalid, 1 Unknown, 0 Unchecked, 11506.42ms Time] [2021-11-13 18:29:47,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10096 states. [2021-11-13 18:29:48,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10096 to 9627. [2021-11-13 18:29:48,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9627 states, 6657 states have (on average 1.3406940063091484) internal successors, (8925), 6996 states have internal predecessors, (8925), 2357 states have call successors, (2357), 613 states have call predecessors, (2357), 612 states have return successors, (2356), 2301 states have call predecessors, (2356), 2356 states have call successors, (2356) [2021-11-13 18:29:48,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9627 states to 9627 states and 13638 transitions. [2021-11-13 18:29:48,556 INFO L78 Accepts]: Start accepts. Automaton has 9627 states and 13638 transitions. Word has length 213 [2021-11-13 18:29:48,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:48,557 INFO L470 AbstractCegarLoop]: Abstraction has 9627 states and 13638 transitions. [2021-11-13 18:29:48,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-13 18:29:48,559 INFO L276 IsEmpty]: Start isEmpty. Operand 9627 states and 13638 transitions. [2021-11-13 18:29:48,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-13 18:29:48,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:48,567 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:29:48,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:29:48,568 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:29:48,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:48,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1347570925, now seen corresponding path program 1 times [2021-11-13 18:29:48,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:48,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136763323] [2021-11-13 18:29:48,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:48,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:48,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:48,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:29:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:48,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:29:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:48,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:29:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:48,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:29:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:48,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:29:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:29:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:29:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:29:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-13 18:29:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:29:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-13 18:29:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 18:29:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 18:29:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 18:29:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 18:29:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:29:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-13 18:29:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:29:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:29:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 18:29:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-13 18:29:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-13 18:29:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-13 18:29:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 18:29:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 18:29:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 18:29:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-13 18:29:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-11-13 18:29:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-13 18:29:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-13 18:29:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:49,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1516 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1516 trivial. 0 not checked. [2021-11-13 18:29:49,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:49,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136763323] [2021-11-13 18:29:49,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136763323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:49,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:49,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:29:49,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831830747] [2021-11-13 18:29:49,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:49,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:29:49,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:49,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:29:49,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:29:49,373 INFO L87 Difference]: Start difference. First operand 9627 states and 13638 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-13 18:29:51,416 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:01,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:01,314 INFO L93 Difference]: Finished difference Result 27017 states and 38426 transitions. [2021-11-13 18:30:01,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:30:01,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 220 [2021-11-13 18:30:01,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:01,502 INFO L225 Difference]: With dead ends: 27017 [2021-11-13 18:30:01,502 INFO L226 Difference]: Without dead ends: 17449 [2021-11-13 18:30:01,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:30:01,578 INFO L933 BasicCegarLoop]: 6209 mSDtfsCounter, 4091 mSDsluCounter, 5134 mSDsCounter, 0 mSdLazyCounter, 3036 mSolverCounterSat, 1382 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9810.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4670 SdHoareTripleChecker+Valid, 11343 SdHoareTripleChecker+Invalid, 4419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 82.67ms SdHoareTripleChecker+Time, 1382 IncrementalHoareTripleChecker+Valid, 3036 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11026.70ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:01,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4670 Valid, 11343 Invalid, 4419 Unknown, 0 Unchecked, 82.67ms Time], IncrementalHoareTripleChecker [1382 Valid, 3036 Invalid, 1 Unknown, 0 Unchecked, 11026.70ms Time] [2021-11-13 18:30:01,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17449 states. [2021-11-13 18:30:02,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17449 to 16622. [2021-11-13 18:30:02,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16622 states, 11543 states have (on average 1.3377804730139478) internal successors, (15442), 12127 states have internal predecessors, (15442), 3985 states have call successors, (3985), 1094 states have call predecessors, (3985), 1093 states have return successors, (3984), 3889 states have call predecessors, (3984), 3984 states have call successors, (3984) [2021-11-13 18:30:02,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16622 states to 16622 states and 23411 transitions. [2021-11-13 18:30:02,739 INFO L78 Accepts]: Start accepts. Automaton has 16622 states and 23411 transitions. Word has length 220 [2021-11-13 18:30:02,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:02,741 INFO L470 AbstractCegarLoop]: Abstraction has 16622 states and 23411 transitions. [2021-11-13 18:30:02,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-13 18:30:02,742 INFO L276 IsEmpty]: Start isEmpty. Operand 16622 states and 23411 transitions. [2021-11-13 18:30:02,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2021-11-13 18:30:02,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:02,782 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:30:02,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:30:02,783 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:30:02,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:02,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1196821462, now seen corresponding path program 1 times [2021-11-13 18:30:02,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:30:02,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877589927] [2021-11-13 18:30:02,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:02,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:30:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:30:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:30:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:30:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:30:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:30:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:30:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:30:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:30:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:30:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-13 18:30:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:30:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-13 18:30:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 18:30:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 18:30:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 18:30:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 18:30:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:30:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-13 18:30:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:30:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:30:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 18:30:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-13 18:30:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-13 18:30:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-13 18:30:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 18:30:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 18:30:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 18:30:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-13 18:30:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-13 18:30:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-11-13 18:30:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-11-13 18:30:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-13 18:30:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-13 18:30:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:03,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-11-13 18:30:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:04,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-11-13 18:30:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:04,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-11-13 18:30:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:04,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-11-13 18:30:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:04,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-11-13 18:30:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:04,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-11-13 18:30:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:04,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-11-13 18:30:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:04,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-11-13 18:30:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:04,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-11-13 18:30:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:04,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-11-13 18:30:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:04,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-11-13 18:30:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:04,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-11-13 18:30:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:04,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-11-13 18:30:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:04,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2021-11-13 18:30:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:04,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-11-13 18:30:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:04,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2021-11-13 18:30:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:04,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-11-13 18:30:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:04,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2021-11-13 18:30:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:04,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-11-13 18:30:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:04,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-11-13 18:30:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:04,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4908 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4908 trivial. 0 not checked. [2021-11-13 18:30:04,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:30:04,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877589927] [2021-11-13 18:30:04,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877589927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:30:04,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:30:04,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:30:04,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62634393] [2021-11-13 18:30:04,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:30:04,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:30:04,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:30:04,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:30:04,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:30:04,347 INFO L87 Difference]: Start difference. First operand 16622 states and 23411 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2021-11-13 18:30:06,396 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:13,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:13,357 INFO L93 Difference]: Finished difference Result 29009 states and 41217 transitions. [2021-11-13 18:30:13,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:30:13,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 370 [2021-11-13 18:30:13,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:13,589 INFO L225 Difference]: With dead ends: 29009 [2021-11-13 18:30:13,590 INFO L226 Difference]: Without dead ends: 29006 [2021-11-13 18:30:13,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:30:13,617 INFO L933 BasicCegarLoop]: 4311 mSDtfsCounter, 3963 mSDsluCounter, 4064 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 1485 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7334.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4316 SdHoareTripleChecker+Valid, 8375 SdHoareTripleChecker+Invalid, 3870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.21ms SdHoareTripleChecker+Time, 1485 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8232.72ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:13,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4316 Valid, 8375 Invalid, 3870 Unknown, 0 Unchecked, 52.21ms Time], IncrementalHoareTripleChecker [1485 Valid, 2384 Invalid, 1 Unknown, 0 Unchecked, 8232.72ms Time] [2021-11-13 18:30:13,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29006 states. [2021-11-13 18:30:14,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29006 to 27409. [2021-11-13 18:30:15,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27409 states, 19383 states have (on average 1.343600061909921) internal successors, (26043), 20255 states have internal predecessors, (26043), 6038 states have call successors, (6038), 1964 states have call predecessors, (6038), 1987 states have return successors, (6345), 5863 states have call predecessors, (6345), 6037 states have call successors, (6345) [2021-11-13 18:30:15,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27409 states to 27409 states and 38426 transitions. [2021-11-13 18:30:15,181 INFO L78 Accepts]: Start accepts. Automaton has 27409 states and 38426 transitions. Word has length 370 [2021-11-13 18:30:15,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:15,183 INFO L470 AbstractCegarLoop]: Abstraction has 27409 states and 38426 transitions. [2021-11-13 18:30:15,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2021-11-13 18:30:15,183 INFO L276 IsEmpty]: Start isEmpty. Operand 27409 states and 38426 transitions. [2021-11-13 18:30:15,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2021-11-13 18:30:15,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:15,291 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:30:15,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:30:15,292 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:30:15,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:15,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1958315436, now seen corresponding path program 1 times [2021-11-13 18:30:15,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:30:15,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191894358] [2021-11-13 18:30:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:15,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:30:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:15,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:30:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:15,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:30:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:15,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:30:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:15,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:30:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:15,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:30:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:15,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:30:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:15,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:30:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:15,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:30:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:15,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:30:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:15,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-13 18:30:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:30:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-13 18:30:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 18:30:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 18:30:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 18:30:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 18:30:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:30:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-13 18:30:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:30:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:30:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 18:30:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-13 18:30:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-13 18:30:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-13 18:30:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 18:30:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 18:30:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 18:30:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-13 18:30:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-13 18:30:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-11-13 18:30:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-11-13 18:30:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-13 18:30:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-13 18:30:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-11-13 18:30:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-11-13 18:30:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-11-13 18:30:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-11-13 18:30:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-11-13 18:30:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-11-13 18:30:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-11-13 18:30:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-11-13 18:30:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-11-13 18:30:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-11-13 18:30:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-11-13 18:30:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-11-13 18:30:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-11-13 18:30:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2021-11-13 18:30:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-11-13 18:30:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2021-11-13 18:30:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-11-13 18:30:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2021-11-13 18:30:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:30:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-11-13 18:30:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2021-11-13 18:30:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-11-13 18:30:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:16,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4915 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4911 trivial. 0 not checked. [2021-11-13 18:30:16,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:30:16,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191894358] [2021-11-13 18:30:16,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191894358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:30:16,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:30:16,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:30:16,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409963876] [2021-11-13 18:30:16,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:30:16,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:30:16,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:30:16,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:30:16,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:30:16,610 INFO L87 Difference]: Start difference. First operand 27409 states and 38426 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (59), 4 states have call predecessors, (59), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-13 18:30:18,661 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:20,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:22,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:37,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:37,015 INFO L93 Difference]: Finished difference Result 86833 states and 123019 transitions. [2021-11-13 18:30:37,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:30:37,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (59), 4 states have call predecessors, (59), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 395 [2021-11-13 18:30:37,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:37,571 INFO L225 Difference]: With dead ends: 86833 [2021-11-13 18:30:37,571 INFO L226 Difference]: Without dead ends: 59492 [2021-11-13 18:30:37,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:30:37,801 INFO L933 BasicCegarLoop]: 6935 mSDtfsCounter, 5314 mSDsluCounter, 8213 mSDsCounter, 0 mSdLazyCounter, 4886 mSolverCounterSat, 2998 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16115.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5946 SdHoareTripleChecker+Valid, 15148 SdHoareTripleChecker+Invalid, 7887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 101.65ms SdHoareTripleChecker+Time, 2998 IncrementalHoareTripleChecker+Valid, 4886 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17913.36ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:37,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5946 Valid, 15148 Invalid, 7887 Unknown, 0 Unchecked, 101.65ms Time], IncrementalHoareTripleChecker [2998 Valid, 4886 Invalid, 3 Unknown, 0 Unchecked, 17913.36ms Time] [2021-11-13 18:30:37,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59492 states. [2021-11-13 18:30:40,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59492 to 56839. [2021-11-13 18:30:41,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56839 states, 40193 states have (on average 1.3439156071952827) internal successors, (54016), 42145 states have internal predecessors, (54016), 12502 states have call successors, (12502), 3926 states have call predecessors, (12502), 4143 states have return successors, (13443), 12193 states have call predecessors, (13443), 12501 states have call successors, (13443) [2021-11-13 18:30:41,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56839 states to 56839 states and 79961 transitions. [2021-11-13 18:30:41,572 INFO L78 Accepts]: Start accepts. Automaton has 56839 states and 79961 transitions. Word has length 395 [2021-11-13 18:30:41,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:41,574 INFO L470 AbstractCegarLoop]: Abstraction has 56839 states and 79961 transitions. [2021-11-13 18:30:41,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (59), 4 states have call predecessors, (59), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-13 18:30:41,575 INFO L276 IsEmpty]: Start isEmpty. Operand 56839 states and 79961 transitions. [2021-11-13 18:30:41,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2021-11-13 18:30:41,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:41,704 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:30:41,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:30:41,704 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:30:41,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:41,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1060922158, now seen corresponding path program 1 times [2021-11-13 18:30:41,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:30:41,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916496297] [2021-11-13 18:30:41,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:41,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:30:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:30:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:30:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:30:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:30:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:30:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:30:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:30:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:30:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:30:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-13 18:30:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:30:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-13 18:30:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 18:30:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 18:30:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:42,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 18:30:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 18:30:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:30:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-13 18:30:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:30:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:30:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 18:30:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-13 18:30:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-13 18:30:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-13 18:30:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 18:30:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 18:30:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 18:30:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-13 18:30:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-13 18:30:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-11-13 18:30:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-11-13 18:30:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-13 18:30:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-13 18:30:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-11-13 18:30:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-11-13 18:30:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-11-13 18:30:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-11-13 18:30:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-11-13 18:30:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-11-13 18:30:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-11-13 18:30:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-11-13 18:30:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-11-13 18:30:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-11-13 18:30:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-11-13 18:30:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-11-13 18:30:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-11-13 18:30:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2021-11-13 18:30:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-11-13 18:30:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2021-11-13 18:30:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-11-13 18:30:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2021-11-13 18:30:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:30:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-11-13 18:30:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2021-11-13 18:30:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-11-13 18:30:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:43,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4915 backedges. 96 proven. 13 refuted. 0 times theorem prover too weak. 4806 trivial. 0 not checked. [2021-11-13 18:30:43,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:30:43,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916496297] [2021-11-13 18:30:43,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916496297] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:30:43,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257428080] [2021-11-13 18:30:43,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:43,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:30:43,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:30:43,776 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:30:43,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:30:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:45,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 3987 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 18:30:45,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:30:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4915 backedges. 2473 proven. 0 refuted. 0 times theorem prover too weak. 2442 trivial. 0 not checked. [2021-11-13 18:30:46,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:30:46,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257428080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:30:46,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:30:46,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2021-11-13 18:30:46,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144485000] [2021-11-13 18:30:46,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:30:46,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:30:46,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:30:46,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:30:46,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:30:46,351 INFO L87 Difference]: Start difference. First operand 56839 states and 79961 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-13 18:30:48,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:51,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:51,417 INFO L93 Difference]: Finished difference Result 113742 states and 159987 transitions. [2021-11-13 18:30:51,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:30:51,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 395 [2021-11-13 18:30:51,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:51,786 INFO L225 Difference]: With dead ends: 113742 [2021-11-13 18:30:51,786 INFO L226 Difference]: Without dead ends: 56811 [2021-11-13 18:30:52,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-11-13 18:30:52,275 INFO L933 BasicCegarLoop]: 3886 mSDtfsCounter, 6 mSDsluCounter, 11653 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2053.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 15539 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.20ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2157.03ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:52,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 15539 Invalid, 18 Unknown, 0 Unchecked, 23.20ms Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 2157.03ms Time] [2021-11-13 18:30:52,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56811 states. [2021-11-13 18:30:55,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56811 to 56699. [2021-11-13 18:30:55,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56699 states, 40053 states have (on average 1.3435198362170124) internal successors, (53812), 42005 states have internal predecessors, (53812), 12502 states have call successors, (12502), 3926 states have call predecessors, (12502), 4143 states have return successors, (13443), 12193 states have call predecessors, (13443), 12501 states have call successors, (13443) [2021-11-13 18:30:55,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56699 states to 56699 states and 79757 transitions. [2021-11-13 18:30:55,753 INFO L78 Accepts]: Start accepts. Automaton has 56699 states and 79757 transitions. Word has length 395 [2021-11-13 18:30:55,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:55,754 INFO L470 AbstractCegarLoop]: Abstraction has 56699 states and 79757 transitions. [2021-11-13 18:30:55,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-13 18:30:55,754 INFO L276 IsEmpty]: Start isEmpty. Operand 56699 states and 79757 transitions. [2021-11-13 18:30:56,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2021-11-13 18:30:56,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:56,222 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:30:56,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:30:56,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:30:56,468 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:30:56,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:56,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1707498606, now seen corresponding path program 1 times [2021-11-13 18:30:56,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:30:56,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122516301] [2021-11-13 18:30:56,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:56,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:30:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:30:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:30:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:30:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:30:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:30:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:30:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:30:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:30:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:30:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-13 18:30:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:30:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-13 18:30:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 18:30:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 18:30:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 18:30:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 18:30:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:30:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-13 18:30:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:30:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:30:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 18:30:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-13 18:30:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-13 18:30:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-13 18:30:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 18:30:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 18:30:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 18:30:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-13 18:30:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-13 18:30:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-13 18:30:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-13 18:30:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-13 18:30:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-11-13 18:30:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-13 18:30:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-13 18:30:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2021-11-13 18:30:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-11-13 18:30:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:57,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-11-13 18:30:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:58,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-11-13 18:30:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:58,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-11-13 18:30:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:58,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-11-13 18:30:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:58,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-11-13 18:30:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:58,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-11-13 18:30:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:58,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-11-13 18:30:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:58,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-11-13 18:30:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:58,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2021-11-13 18:30:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:58,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-11-13 18:30:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:58,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2021-11-13 18:30:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:58,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2021-11-13 18:30:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:58,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-11-13 18:30:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:58,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2021-11-13 18:30:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:58,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:30:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:58,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2021-11-13 18:30:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:58,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2021-11-13 18:30:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:58,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2021-11-13 18:30:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4915 backedges. 96 proven. 13 refuted. 0 times theorem prover too weak. 4806 trivial. 0 not checked. [2021-11-13 18:30:58,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:30:58,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122516301] [2021-11-13 18:30:58,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122516301] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:30:58,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71985285] [2021-11-13 18:30:58,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:58,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:30:58,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:30:58,347 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:30:58,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:31:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:05,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 4012 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-13 18:31:05,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:31:09,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-13 18:31:09,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4915 backedges. 301 proven. 6 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2021-11-13 18:31:09,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:31:09,524 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-13 18:31:09,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-13 18:31:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4915 backedges. 96 proven. 13 refuted. 0 times theorem prover too weak. 4806 trivial. 0 not checked. [2021-11-13 18:31:11,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71985285] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:31:11,477 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:31:11,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 30 [2021-11-13 18:31:11,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636146610] [2021-11-13 18:31:11,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:31:11,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-13 18:31:11,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:31:11,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-13 18:31:11,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2021-11-13 18:31:11,482 INFO L87 Difference]: Start difference. First operand 56699 states and 79757 transitions. Second operand has 30 states, 30 states have (on average 7.2) internal successors, (216), 23 states have internal predecessors, (216), 14 states have call successors, (169), 11 states have call predecessors, (169), 9 states have return successors, (112), 13 states have call predecessors, (112), 11 states have call successors, (112) [2021-11-13 18:31:13,531 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:15,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:17,686 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:19,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:21,850 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:23,920 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:25,990 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:28,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:30,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:32,192 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:21,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:21,916 INFO L93 Difference]: Finished difference Result 286676 states and 416206 transitions. [2021-11-13 18:33:21,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-13 18:33:21,918 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.2) internal successors, (216), 23 states have internal predecessors, (216), 14 states have call successors, (169), 11 states have call predecessors, (169), 9 states have return successors, (112), 13 states have call predecessors, (112), 11 states have call successors, (112) Word has length 397 [2021-11-13 18:33:21,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:23,872 INFO L225 Difference]: With dead ends: 286676 [2021-11-13 18:33:23,872 INFO L226 Difference]: Without dead ends: 230045 [2021-11-13 18:33:24,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 900 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=742, Invalid=4370, Unknown=0, NotChecked=0, Total=5112 [2021-11-13 18:33:24,570 INFO L933 BasicCegarLoop]: 5681 mSDtfsCounter, 26971 mSDsluCounter, 53744 mSDsCounter, 0 mSdLazyCounter, 84853 mSolverCounterSat, 19239 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 103890.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27913 SdHoareTripleChecker+Valid, 59425 SdHoareTripleChecker+Invalid, 104102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 778.15ms SdHoareTripleChecker+Time, 19239 IncrementalHoareTripleChecker+Valid, 84853 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116707.15ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:24,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27913 Valid, 59425 Invalid, 104102 Unknown, 0 Unchecked, 778.15ms Time], IncrementalHoareTripleChecker [19239 Valid, 84853 Invalid, 10 Unknown, 0 Unchecked, 116707.15ms Time] [2021-11-13 18:33:24,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230045 states. [2021-11-13 18:33:34,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230045 to 195173. [2021-11-13 18:33:34,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195173 states, 139427 states have (on average 1.3604538575742144) internal successors, (189684), 146455 states have internal predecessors, (189684), 40274 states have call successors, (40274), 14940 states have call predecessors, (40274), 15471 states have return successors, (46969), 37747 states have call predecessors, (46969), 40273 states have call successors, (46969) [2021-11-13 18:33:37,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195173 states to 195173 states and 276927 transitions. [2021-11-13 18:33:37,109 INFO L78 Accepts]: Start accepts. Automaton has 195173 states and 276927 transitions. Word has length 397 [2021-11-13 18:33:37,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:37,111 INFO L470 AbstractCegarLoop]: Abstraction has 195173 states and 276927 transitions. [2021-11-13 18:33:37,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.2) internal successors, (216), 23 states have internal predecessors, (216), 14 states have call successors, (169), 11 states have call predecessors, (169), 9 states have return successors, (112), 13 states have call predecessors, (112), 11 states have call successors, (112) [2021-11-13 18:33:37,111 INFO L276 IsEmpty]: Start isEmpty. Operand 195173 states and 276927 transitions. [2021-11-13 18:33:37,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2021-11-13 18:33:37,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:37,316 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:33:37,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:33:37,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:33:37,543 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:33:37,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:37,544 INFO L85 PathProgramCache]: Analyzing trace with hash -955879295, now seen corresponding path program 1 times [2021-11-13 18:33:37,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:37,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264806822] [2021-11-13 18:33:37,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:37,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:33:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:33:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:33:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:33:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:33:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:33:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:33:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:33:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:33:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-13 18:33:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:33:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-13 18:33:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 18:33:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 18:33:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 18:33:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 18:33:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:33:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-13 18:33:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:33:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:33:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 18:33:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-13 18:33:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-13 18:33:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-13 18:33:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 18:33:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 18:33:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 18:33:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-13 18:33:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-13 18:33:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-13 18:33:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-13 18:33:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-13 18:33:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-11-13 18:33:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-13 18:33:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-13 18:33:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2021-11-13 18:33:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-11-13 18:33:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-11-13 18:33:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-11-13 18:33:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-11-13 18:33:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-11-13 18:33:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-11-13 18:33:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:38,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-11-13 18:33:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:39,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-11-13 18:33:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:39,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-11-13 18:33:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:39,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2021-11-13 18:33:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:39,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-11-13 18:33:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:39,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2021-11-13 18:33:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:39,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2021-11-13 18:33:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:39,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-11-13 18:33:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:39,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2021-11-13 18:33:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:39,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:33:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:39,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2021-11-13 18:33:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:39,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-11-13 18:33:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:39,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2021-11-13 18:33:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4919 backedges. 76 proven. 37 refuted. 0 times theorem prover too weak. 4806 trivial. 0 not checked. [2021-11-13 18:33:39,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:39,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264806822] [2021-11-13 18:33:39,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264806822] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:33:39,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524624621] [2021-11-13 18:33:39,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:39,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:33:39,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:33:39,644 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:33:39,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b39b264-9f78-4da9-bb0f-343bf5068bd6/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 18:33:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:45,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 4014 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-13 18:33:45,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:33:48,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-13 18:33:48,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4919 backedges. 1781 proven. 30 refuted. 0 times theorem prover too weak. 3108 trivial. 0 not checked. [2021-11-13 18:33:48,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:33:48,962 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-13 18:33:48,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-13 18:33:50,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4919 backedges. 76 proven. 37 refuted. 0 times theorem prover too weak. 4806 trivial. 0 not checked. [2021-11-13 18:33:50,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524624621] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:33:50,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:33:50,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 30 [2021-11-13 18:33:50,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623100750] [2021-11-13 18:33:50,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:33:50,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-13 18:33:50,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:50,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-13 18:33:50,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2021-11-13 18:33:50,630 INFO L87 Difference]: Start difference. First operand 195173 states and 276927 transitions. Second operand has 30 states, 30 states have (on average 7.766666666666667) internal successors, (233), 23 states have internal predecessors, (233), 14 states have call successors, (169), 11 states have call predecessors, (169), 9 states have return successors, (112), 13 states have call predecessors, (112), 11 states have call successors, (112) [2021-11-13 18:33:52,671 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:54,728 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:56,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:58,880 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:34:00,958 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:34:03,036 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:34:05,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:34:07,190 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:34:09,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:34:11,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:23,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:23,181 INFO L93 Difference]: Finished difference Result 998362 states and 1457514 transitions. [2021-11-13 18:36:23,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-13 18:36:23,181 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.766666666666667) internal successors, (233), 23 states have internal predecessors, (233), 14 states have call successors, (169), 11 states have call predecessors, (169), 9 states have return successors, (112), 13 states have call predecessors, (112), 11 states have call successors, (112) Word has length 398 [2021-11-13 18:36:23,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:29,444 INFO L225 Difference]: With dead ends: 998362 [2021-11-13 18:36:29,444 INFO L226 Difference]: Without dead ends: 803257 [2021-11-13 18:36:30,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 972 GetRequests, 902 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=742, Invalid=4370, Unknown=0, NotChecked=0, Total=5112 [2021-11-13 18:36:30,645 INFO L933 BasicCegarLoop]: 5728 mSDtfsCounter, 21165 mSDsluCounter, 60074 mSDsCounter, 0 mSdLazyCounter, 91819 mSolverCounterSat, 13088 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97748.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22106 SdHoareTripleChecker+Valid, 65802 SdHoareTripleChecker+Invalid, 104917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 655.07ms SdHoareTripleChecker+Time, 13088 IncrementalHoareTripleChecker+Valid, 91819 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110270.49ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:30,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22106 Valid, 65802 Invalid, 104917 Unknown, 0 Unchecked, 655.07ms Time], IncrementalHoareTripleChecker [13088 Valid, 91819 Invalid, 10 Unknown, 0 Unchecked, 110270.49ms Time] [2021-11-13 18:36:31,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803257 states.